Tentore model with a 5.5-inch screen in a metal case

The Chinese company Xiaomi released the Redmi Note 4 model, presenting it almost simultaneously with the new flagship REDMI Pro. Modification, can be said, passing, it will be quite difficult to compete with the rapid hit REDMI Note 3 Pro. At the same time, she also strained part of users, who did not have so long ago to acquire the previous model Redmi Note 3, and then the update came out. In general, the manufacturer this season did this number of models that it is time to talk about internal competition between Xiaomi products. True, at this place it is worth noting that not all of them are officially intended for the international market, even despite the presence of global firmware for them. That is the hero of today's review: unlike Redmi Note 3, Redmi Note 4 is released exclusively for the domestic market, the model is not even presented on among the company's products, although Redmi Note 3 is there.

In any case, we will not start at analytical reasoning about the actions of the manufacturer in the face of tough competition, and even on their own market, but simply proceed to a detailed study of all the possibilities of the novelties. Users themselves will decide whether to acquire Redmi Note 4 or already wait for the next update, because these updates from Xiaomi now go out with such a frightening speed ...

Key Features Xiaomi Redmi Note 4

• Soc MediaTek Helio X20 (MT6797), 10 cores: [Email Protected], 4 GHz (ARM Cortex-A53) + [Email Protected], 85 GHz (ARM Cortex-A53) + [Email Protected], 1 GHz (ARM Cortex-A72)
• GPU Arm Mali-T880
• Operating system Android 6.0, MIUI 8
• Touchscreen display IPS 5,5 ", 1920 × 1080, 401 ppi
• RAM (RAM) 2/3 GB, internal memory 16/64 GB
• Support Nano-SIM (1 pc.), Micro-SIM (1 pc.)
• MicroSD support up to 128 GB
• GSM / GPRS / EDGE network (900/1800/1900 MHz)
• WCDMA / HSPA + network (850/900/1900/2100 MHz)
• LTE FDD Band 1/3/5/7/8
• TDD Band 38-41, TD-SCDMA B34 / B39
• Wi-Fi 802.11a / B / G / N / AC (2.4 and 5 GHz)
• Bluetooth 4.2.
• GPS, A-GPS, GLONASS
• USB 2.0, OTG
• Camera 13 MP, autofocus, f / 2,0, video 1080r
• The camera is frontal 5 MP, F / 2.0, Fix. focus
• Sensors of approximation, lighting, magnetic field, dactyloscopic, accelerometer, gyroscope
• Battery 4100 mA · h, non-removable
• Dimensions 151 × 76 × 8.35 mm
• Mass 175 g

Contents of delivery

Smartphone Xiaomi Redmi Note 4 is available in a small box of matte solid cardboard, designed in the style of the company's familiar for the latest products. And yes, this is not the same industrial style of yellowish washed paper, which manufacturer used a couple of years ago. Now Xiaomi, it seems that I finally lost interest.

In a small box, there is a minimum possible set. There, a smartphone itself, a miniature charger with a maximum output current 2 A, with a voltage of 5 V, a connecting cable and a key to extract the cards, was barely fit.

Appearance and ease of use

The appearance of Xiaomi smartphones with each new model is becoming better and better. Finally disappeared plastic, the metal has become even more. Now there are no plastic inserts, the entire body is all-metal (UNIBODY), and the antennas are laid in external fine grooves, covered with composite material.

The form at the corps is classic, it is slightly less streamlined and more angular than most modern generally accepted handsome people, since there are clearly defined flat side faces. Due to their sharp edges, the smartphone is more reliable in hand, and a strong one-piece body does not allow the device to produce a slightest screen.

The smartphone has a large 5.5-inch screen, but in the hand is located quite comfortable due to the small overall size of the hull, in which, apparently, managed to reduce the mass and the total thickness of the profile by applying more durable materials. The surface of the metal matte, but not so rough, so that you can talk about the reliability of holding in your fingers - the device can be quite slippery.

The rear part is familiar to the camera module with a flash and a fingerprint scanner. The camera module does not repel out of the surface of the body, on the table the machine is stable and not shake when touched to the screen. The camera is equipped with a LED flash of two multicolored LEDs, the flash is very bright. The sensor of the dactyloscopic sensor clearly works out the touch, it works quickly and unmistakably, there are no complaints to it.

The front panel at the smartphone is covered with fashionable now at the manufacturers of the 2.5D screen with sloping edges. Although for the hull that does not look streamlined from all sides, it does not play a special role. On the front panel there is a LED indicator of events, the touch buttons under the screen are highlighted. The front panel color varies depending on the total body of the housing: it can be white or black.

The card tray is inserted into the smartphone on the side, it is hybrid, has two micro-SIM card slots, Nano-SIM and MicroSD, and the microSD card can be inserted instead of Nano-SIM. It is worth noting a very useful trifle associated with the use of adapters: Nano-SIM in the "Framework" is conveniently placed in place of Micro-SIM, because on one side of the tray there is a pallet, and all this design is not available anywhere. Supported hot card replacement.

On the opposite side face, the power and volume buttons are installed, the keys are quite elastic, have a harsh stroke, easily solder blindly. The location of the buttons does not cause discontent, everything is in order.

The Micro-USB universal connector, located in the lower end, supports the connection of external devices in USB OTG mode. For some reason, Xiaomi does not come to a single standard, establishing Micro-USB into different models, then Type-c. The connector surrounds two lattices, but only one of them is hiding the speaker, it does not go through the second sound.

The 3.5-millimeter minijack on the upper end is adjacent to the infrared transmitter serving to emulate the remote control. Immediately you can see the small hole of the second, auxiliary microphone for the noise reduction system.

The device is available in bright and dark design: in the case of golden and light gray colors, the front panel has a white color, and in a dark gray version it is black. The colors are carried in this case only the taste load, since the metal metal in all versions remains practical matte, not collecting dirt and prints.

Screen

Xiaomi Redmi Note 4 is equipped with an IPS touchscreen display with dimensions of 68 × 121 mm. Diagonal - 5.5 inches, resolution - 1920 × 1080 points, the density of the points is approximately 401 ppi. Frame on the sides of the thinner of the average, only about 3 mm, because of this, the device is successfully located in the hand. Its case is not as wide as, for example, at the same 5.5-inch iPhone 6 Plus.

The display brightness can be configured manually or use automatic adjustment based on the operation of the external light sensor. Antutu test diagnoses support for 10 simultaneous touch multitouch. When the smartphone is raised to the ear, the screen is adequately blocked and unlocked using the approximation sensor. Implemented function on and off the display by tapping on the glass.

Detailed examination with the use of measuring instruments was conducted by the editor of the "Monitors" and "Projectors and TV" sections Alexey Kudryavtsev. We present his expert opinion on the screen of the sample under study.

The front surface of the screen is made in the form of a glass plate with a mirror-smooth surface resistant to the appearance of scratches. Judging by the reflection of objects, the anti-glare properties of the screen is not worse than the Google Nexus 7 (2013) screen (hereinafter simply Nexus 7). For clarity, we give a photo on which the white surface is reflected in the screens (left - Nexus 7, on the right - Xiaomi Redmi Note 4, then they can be distinguished by size):

The screen at Xiaomi Redmi Note 4 is only a little bit (brightness of photographs 112 versus 111 at Nexus 7). Two reflected objects on the Xiaomi Redmi Note 4 screen is very weak, it suggests that between the layers of the screen (more specifically between the outer glass and the surface of the LCD matrix) there is no airbap (OGS-One Glass Solution type screen). Due to the smaller number of borders (type of glass / air) with highly different refractive ratios, such screens look better in conditions of intensive exterior illumination, but their repair in the event of a cracked exterior glass costs much more expensive, as it is necessary to change the entire screen. On the outer surface of the screen there is a special oleophobic (fat-repellent) coating (efficientness even better than Nexus 7), so traces from the fingers are removed much easier, and appear at a lower rate than in the case of conventional glass.

When manually controlling the brightness and when displaying a white field, the maximum brightness value was about 400 kD / m², the minimum is 0.8 kD / m². The maximum brightness is not very high, but, given the excellent anti-glare properties, readability even on a sunny day outside the room should be at a good level. In complete dark, brightness can be reduced to a comfortable value. In stock Automatic brightness adjustment over the illumination sensor (it is the left side of the front loudspeaker). In automatic mode, when changing external light conditions, the screen brightness is rising, and decreases. The operation of this function depends on the position of the brightness adjustment slider. If it is 100%, then in complete darkness, the auturance function reduces the brightness of up to 100 kD / m² (multipato), in conditions of an artificial light of an office (about 400 LCs) sets 300 cd / m² (also many too), in a very bright environment ( Corresponds to lighting clear day outdoors, but without direct sunlight - 20,000 LCs or a little more) The brightness rises to 400 cd / m² (to the maximum - it is necessary); If adjustment is about 50%, then the values \u200b\u200bare as follows: 9, 170 and 400 kD / m² (suitable values), a regulator by 0% - 0.8, 30, and 400 kD / m² (two first values \u200b\u200bare underestimated). It turns out that the auto-adjustment feature of the brightness works more or less adequately and to some extent allows the user to customize its work under individual requirements. At any level of brightness, there is no significant illumination modulation, so there is no screen flicker.

This smartphone uses an IPS type matrix. Micrographs demonstrate a typical structure of subpixels for IPS:

For comparison, you can familiarize yourself with the micrographic gallery of the screens used in mobile technology.

The screen has good viewing angles without a significant shift of colors, even with large looks from the perpendicular to the screen and without inverting shades. For comparison, we give the pictures on which the same images are displayed on the Xiaomi Redmi Redmi Note 4 and Nexus 7 screens, while the brightness of the screens is initially set to about 200 cd / m², and the color balance on the camera is forcibly switched to 6500 K. Puncturely to the screens of the White Field:

Note good uniformity of brightness and color tone of the white field.

And test picture:

Colors on the Xiaomi Redmi Note 4 screen have a slightly overwhelmed saturation, the color balance of Nexus 7 and the tested screen differs slightly. Photo obtained after selecting profile Standard. In the screen settings:

In two other profiles, saturation is even higher, which is achieved by increasing color contrast, without changing the coordinates of the primary colors.

Now at an angle of about 45 degrees to the plane and to the side of the screen:

It can be seen that the colors did not change much from both screens, but Xiaomi Redmi Note 4 contrast decreased to a greater extent due to the strong flamement of black.

And white field:

The brightness at an angle in the screens has decreased (at least 5 times, based on the difference in exposure) and decreased approximately equally. The black field during the diagonal deviation is highlighted, but there remains conditionally neutral gray shade. The photos below are demonstrated (the brightness of white areas in the perpendicular plane of the directions of the direction is the same!):

And at a different angle:

With perpendicular view, the uniformity of the black field is good, although imperfect. The backlight slightly shifts through the white frame:

Contrast (approximately in the center of the screen) high - about 1070: 1. Response time when switching black-white-black is 18 ms (10 ms incl. + 8 ms off.). The transition between halftons of gray 25% and 75% (for the numerical color value) and back in sum occupies 28 ms. Constructed by 32 points with an equal interval in the numerical value of the shade of a gray gamma curve did not reveal in neither lights or in the shadows. The index of the approximating power function is 2.18, which is close to the standard value of 2.2. At the same time, the real gamma curve slightly deviates from power dependence:

The presence of a dynamic adjustment of the brightness of the backlight in accordance with the nature of the displayed image, we did not reveal that very well.

Color coverage is close to SRGB:

The spectra show that the matrix light filters to moderately mix the components to each other:

As a result, colors have more or less natural saturation and shade. More or less, since a small increase in color contrast takes place. The balance of shades on the gray scale is good, as the color temperature is not much higher than the standard 6500 K, and the deviation from the spectrum of absolutely black body (ΔE) is mainly below 10, which is considered an acceptable indicator for the consumer device. At the same time, both parameters change little from the shade to the shade - this has a positive effect on the visual assessment of the color balance. (The darkest areas of the gray scale can not be considered, since there the balance of colors does not matter, and the measurement error of the color characteristics on the low brightness is large.)

In this device only when choosing a profile Automatic Contrast. It is possible to adjust the color balance using the shade-standard-standard shade switch (see the screen from the screen above), however, the decrease in color temperature required in this case (option Warm.) leads to an increase of ΔE, so there is no particular sense to perform a correction.

Let us sum up: the screen has a sufficiently high maximum brightness and has excellent anti-reflective properties, so the device without any problems can be used outside the room even summer sunny day. In complete darkness, brightness can be reduced to a comfortable level. It is permissible to use and mode with automatic adjustment of brightness that works more or less adequately. Also, the advantages of the screen should include the presence of an effective oleophobic coating, no air gap in the layers of screen and flicker, high contrast and close to SRGB color coverage. The disadvantages are low stability of black to the rejection of the view from the perpendicular to the plane of the screen. In addition, we did not like some overestimation of color contrast. However, taking into account the importance of the characteristics for this class of devices, the screen quality can be considered high.

Sound

The sound of Xiaomi Redmi Note 4 can be described as satisfactory. To sound the incoming call of the available opportunities, it is enough - the sound is loud and clean. However, there is no bright saturation in it, the frequency spectrum is limited predominantly high, there are no deep bass in the main dynamics, nor in headphones. In general, the sound is clean, but simple - perhaps, for a two-volumedollar smartphone, sufficient, but it could be better.

There is no special complaints about the speaker and the microphone of special complaints, the sound is deaf, but clean and foldable. The interlocutors on the other side also do not notice noticeable problems with sound during telephone conversations.

FM radio in the full package of the smartphone is available. The sensitivity of microphones when writing to the recorder does not cause complaints, the voice of the speaker is written clearly, and with noises, the noise reduction system copes.

Camera

The smartphone is equipped with two modules of digital cameras with a resolution of 13 and 5 mp. The front module has a lens with a maximum diaphragm F / 2.0, a focus fixed, its own flash is missing. Quality for the level of selfie is quite good, sharpness and color is normal, although the detailing is naturally good only for self-portraits. Standardly for self-camera Xiaomi has a function of recognizing persons with the definition of age and floor, the shooting can be performed using the volume keys.

The main chamber received a 13 megapixel sensor and a lens with a diaphragm F / 2.0, a rapid phase autofocus and a twin bright LED flash. As usual, there is no choice of resolution in specific figures, you can only set high, medium or low quality, as well as adjust the brightness, sharpness and contrast. In manual mode, the ISO settings (up to 1600) and the white balance are added. Among the additional shooting modes, you can find panoramic, night, jewelry, as well as audio light mode and others. To transfer the camera settings to third-party applications using the Camera2 API cannot, there is no write option in RAW too.

The camera can shoot a video in the maximum resolution of 1080p, does not support shooting at a speed of 60 fps and 4k. There are no electronic stabilization functions, so the shooting on the move is derric. With the video recorder copesting medium: the picture is not quite clear, the image is loose, although the video sequence with static shooting smooth, without jerks and artifacts, the sound is also recorded more or less acceptable. The noise cancellation system is in stock, and with its tasks it copes tolerable.

• Roller №1 (31 MB, 1920 × [Email Protected] FPS, H.264, AAC)
• Roller # 2 (29 MB, 1920 × [Email Protected] FPS, H.264, AAC)

Xiaomi Redmi Note 4	Apple iPhone 6 Plus

A good chamber is difficult to call, especially for the Xiaomi device. The abundance of residual noise and blur zones does not allow to consider it seriously. On the other hand, with good lighting, it gives a good result, so that the documentary will certainly cope with the documentary.

Telephone part and communication

Network capabilities of Xiaomi smartphones intended for the domestic market often do not fully comply with the requirements of Russian users, because they do not support the frequency of LTE 800 MHz (Band 20), better than other meetings for communication in indoors, as well as in spontaneous locality. No exception and Xiaomi Redmi Note 4: The device can operate in five LTE FDD ranges (Band 1/3/5/7/8), but does not support the range of Band 20. In practice, the smartphone has been confidently registered in the Moscow region and worked in 4G networks . The quality of receiving a signal of particular complaints does not cause, the device confidently supports the connection in the premises and does not lose the signal in the zones of ulusional reception. A complete list of frequency bands supported by smartphone is as follows:

• GSM B2 / B3 / B8; CDMA 2000 / 1X BC0
• WCDMA B1 / B2 / B5 / B8; TD-SCDMA B34 / B39
• FDD-LTE B1 / B3 / B5 / B7 / B8; TD-LTE B38 / B39 / B40 / B41

The smartphone supports Wi-Fi 802.11ac wireless communication standard and, of course, two Wi-Fi ranges are 2.4 and 5 GHz. There is support for Bluetooth version 4.2 and two satellite navigation systems - GPS and GLONASS, without Chinese Beidou. To the speed of the navigation module, there are no complaints, the first satellites are detected at a cold start during the first tens of seconds. There is a built-in magnetic field sensor. NFC support in the smartphone is not.

Built on the basis of the new MediaTek Helio X20 chipset, the device supports one-time operation of both SIM cards in 3G networks. This is especially true for subscribers of those telecom operators, which are covered only in 3G / 4G bands without supporting 2G - the same Tele 2, for example. Everyone knows that if you do not choose such a SIM card for data transfer in 3G / 4G, then it simply stops being accessible because the card in one of the slots can only work in 2G. Here the SIM card Tele 2 always remains available in 3G, even if another card is selected for data transmission, which is convenient.

It is natural about the features of the standby mode, since work with two SIM cards is organized by the usual Dual Sim Dual Standby standard, when both maps can be in active standby mode, but simultaneously it cannot work - a radio module here is only one. For voice communication or data transfer, you can assign a specific card in advance or choose it directly during the connection. The regular keyboard does not support the Russian language and input by a stroke, so it will have to install a normal keyboard after purchase.

OS and Software

As a system in the device, the Google Android version 6.0 software platform is used with the MIUI 8.0 installed with its own shell. Miui features are well acquainted with lovers to install customized interfaces on their smartphones. In any case, you will have to tinker with this device, if only because Google Apps will never be made in the Chinese version, including the necessary Play Store Application Store. Naturally, knowledge of English is needed.

The interface is nice: in the eighth version of the shell, a lot from the outer component, including fonts, has been redesign. There were even more interchangeable wallpapers in the carousel of the pictures - however, they are mainly depicted by subtitle Chinese boys and girls in various poses. There are more useful updates: a calculator, for example, has become more functional, it has several additional mode of operation to choose from. In the gallery photo you can work directly with the pictures, overlapping stickers, sound and your own inscriptions. The defense was given even more attention, now you can protect your password even your own notes.

Gestures, as usual, MIUI is supported by a bit. But there is a multifunctional virtual button with a rapid challenge of the necessary functions that can be attached to any screen location. A separate section for applications in the Lancher, Naturally, no, all icons are distributed over the desktops, the creation of folders is supported. Additional programs are not so much, among them Compass, QR scanner, remote control, FM radio, office package, utility for working with the second account, etc. Part of the programs is intended only for the Chinese market. But the Play Store application store with a small share of efforts can be installed on their own, and then there will be no problems with programs.

Performance

The Xiaomi Redmi Note 4 hardware platform is based on the top-end platform of MediaTek MT6797 - 10-nuclear Soc Helio X20. This is a 64-bit processor in which 4 Cortex-A53 kernels operate at a frequency of 1.4 GHz, 4 more Cortex-A53 kernels are active at a frequency of 1.85 GHz, and another 2 Cortex-A72 kernels operate at a frequency of up to 2.3 GHz . True, in this case, the upper frequency is limited to the 2.1 GHz bar, the SOC MT6797M version is used. The performance of the device is also answered by the Arm Mali T880 and 2 or 3 GB of RAM depending on the modification. The volume of the built-in flash memory is 16 or 64 GB, it is possible to expand its expansion due to the MICROSD cards.

According to the test results, it is possible to once again noted that the flagship Soc MediaTek is generally quite far from the possibilities from the leading Samsung Exynos 8890 OCTA and Qualcomm Snapdragon 820. It has affected the overall performance in tests and limiting the maximum frequency of processor cores in the MT6797M modification: the device issued in Antutu The maximum of 69k points, whereas, for example, DooGee F7 Pro on a full MT6797 issued 89k in the same test. In terms of graphics, the video screen is even more inferior to the leaders, and this is noticeable according to the results of all benchmarks.

Nevertheless, the current capabilities of such a platform is enough for any purpose, including for demanding games. Unassuming "tanks" go on high, although not maximum FPS indicators, in more hard games with demanding graphics, the video screen also copes, although in Dead Trigger 2, light slow motion has yet occurred.

Testing in the latest versions of integrated tests Antutu and Geekbench:

All the results obtained by us when testing the smartphone in the most recent versions of popular benchmarks, we are conveniently reduced to the table. The table usually adds several other devices from various segments, also tested on similar recent versions of benchmarks (this is done only for a visual assessment of the resulting dry numbers). Unfortunately, within the framework of the same comparison, it is impossible to submit results from different versions of the benchmarks, so "for the scenes" there are many decent and actual models - due to the fact that they at one time passed the "obstacles' band" on previous versions of test programs.

Testing a graphic subsystem in 3DMark game tests, GFXBenchmark, and Bonsai Benchmark:

When testing in 3DMark for the most productive smartphones now it is possible to run the application in Unlimited mode, where the resolution of the rendering is fixed to 720p and is turned off by VSYNC (due to which the speed can rise above 60 FPS).

	Xiaomi Redmi Note 4 (MediaTek Helio X20)	LEECO LE 2. (Qualcomm Snapdragon 652)	SAMSUNG GALAXY S7 EDGE (Samsung EXYNOS 8890 OCTA)	Yu Yunicorn. (MediaTek Helio P10)
3DMark Ice Storm Sling Shot ES 3.1 (more - better)	569	812	2130	332
GFXBENCHMark Car Chase ES 3.1 (OnScreen, FPS)	3,5	5	8	—
GFXBENCHMARK CAR Chase ES 3.1 (OffScreen, FPS)	3	5	15	—
GFXBENCHMark Manhattan ES 3.1 (OnScreen, FPS)	6	9	24	4
GFXBENCHMark Manhattan ES 3.1 (OffScreen, FPS)	5	9	26	3
GFXBENCHMARK T-REX (OnScreen, FPS)	15	24	52	17
GFXBENCHMARK T-REX (1080p Offscreen, FPS)	14	31	84	17

Browser cross-platform tests:

As for the benchmarks to estimate the speed of the JavaScript engine, it is necessary to always make a discount on the fact that they are significantly dependent on the browser in them, in which the comparison can be truly correct only on the same OS and browsers, and such an opportunity is available when testing not always. In the case of Android OS, we always try to use Google Chrome.

Heatons

Below is the back of the rear surface, obtained after 10 minutes of operation of the battery test in the GFXBENCHMARK program:

It can be seen that the heating is lonocated in the upper part of the device, which, apparently, corresponds to the location of the SOC chip. According to the heat frame, the maximum heating was only 35 degrees (at an ambient temperature of 24 degrees), it is relatively few.

Video playback

To test "omnivities" when playing video (including support for various codecs, containers and special capabilities, such as subtitles), we used the most common formats that constitute the bulk of the content available on the content network. Note that for mobile devices it is important to have the support of hardware decoding of videos at the chip level, since to process modern options due to the processor nuclei are most often impossible. Also, it is not necessary to wait from the mobile device of decoding everything, since the leadership in flexibility belongs to PC, and no one is going to challenge it. All results are reduced to the table.

According to test results, the subject did not turn out to be equipped with all the necessary decoders, which are needed to fully play most of the most common multimedia files in this case, sound. To successfully play their playback, you will have to resort to the help of a third-party player - for example, MX Player. True, it is necessary to change the settings and manually set additional custom codecs, because now this player does not officially support AC3 sound format.

Format	Container, video, sound	MX Video Player.	Full video player
BDRip 720p	MKV, H.264 1280 × 720, 24fps, AAC	reproduces normal	reproduces normal
BDRip 720p	MKV, H.264 1280 × 720, 24fps, AC3		video is reproduced normally, no sound
BDRip 1080p.	MKV, H.264 1920 × 1080, 24fps, AAC	reproduces normal	reproduces normal
BDRip 1080p.	MKV, H.264 1920 × 1080, 24fps, AC3	video is reproduced normally, no sound	video is reproduced normally, no sound

The MHL interface, like the Mobility Displayport, we did not find it in this smartphone, so I had to restrict ourselves to testing the image of the video files to the screen itself. To do this, we used a set of test files with one division by the frame with an arrow and a rectangle (see "Methods for testing the playback devices and displaying the video signal. Version 1 (for mobile devices)"). Screenshots with shutter speed in 1 C helped to determine the nature of the output of video files with various parameters: resolution ranged (1280 per 720 (720p), 1920 at 1080 (1080p) and 3840 at 2160 (4K) pixels) and frame rate (24, 25, 30, 50 and 60 frames / s). In tests, we used the MX Player video player in the "hardware" mode. Test results are reduced to the table:

Evaluations, this means that, most likely, when viewing the films of artifacts caused by uneven alternation and passage of frames, or will not be visible at all, or their number and notice will not affect the preservation of viewing. Red marks indicate possible problems associated with playing relevant files.

By the output criteria, the quality of video files on the screen of the smartphone itself is good, since frames (or frames of frames) can (but not obliged) to be output with more or less uniform intervals of intervals and without frames of frames. The frequency of the screen update is about 61 Hz, so when displaying files from 60 frame / s one frame per second, it is disabled longer than the rest, and for files with other frequencies of ideal smooth frames is no longer obtained. When playing video files with a resolution of 1920 to 1080 pixels (1080p) on the smartphone screen, the image of the video file is displayed exactly along the screen border, one to one by pixels, that is, in the initial resolution. The brightness range appears on the screen corresponds to the standard range of 16-235: in the shadows and in the lights are displayed all gradations of shades.

Battery life

The non-removable rechargeable battery installed in Xiaomi Redmi Note 4 has more than a decent capacity of 4100 mAs. But, as usual happens with Chinese smartphones on MediaTek, a large amount of battery does not necessarily mean a high level of autonomy. In the case of the hero of our review, autonomy was far from a record, everything is at the average level, not higher.

Testing was traditionally conducted at the usual level of power consumption without using the power saving modes, although they are here, and they can even manually set up their own needs.

Uninterrupted reading in the Moon + Reader program (with a standard, light theme) with a minimum comfortable level of brightness (the brightness was set to 100 cd / m²) with autolist, it lasted until a complete battery discharge 12 hours, and with unlimited viewing video in high quality (720r) with The same level of brightness through the Wi-Fi home network is withstanding 10 hours. In 3D-games mode, the smartphone functioned at about 4 hours. Charged from the standard Xiaomi Redmi Note 4 network adapter for a non-small 2.5 hours current 1.8 A at a voltage of 5.3 V. Wireless charging is not supported.

Outcome

About $ 210 or even a little more about sellers in foreign online stores for the Xiaomi Redmi Note 4 today in the older modification today, that is, with 3 GB of RAM and 64 GB of flash memory. Russian resellers offer this apparatus that has no, naturally, official certification, about 13 thousand rubles at the same price. Most likely, buying from them, with the firmware and installing the Play Store store, they will not have to mess around, they will install everything you need. But even in this case, the device will not be perfectly localized, some of the settings will remain in English. However, such trifles have long been not afraid of enthusiasts that made Xiaomi their favorite brand. And they are a lot of them in Russia. It is worth a novelty by the standards of Xiaomi is not so cheap, especially against the background of the previously represented models, such as the same Redmi Note 3 Pro, which has become popular and selling now at a price of about $ 180. True, on the side of the Redmi Note 4, the topical, according to the manufacturer, SOC MT Helio X20, whereas said Redmi Note 3 Pro - "only" Qualcomm Snapdragon 650. But in fact it is still unknown, which is better.

In any case, the flagship Xiaomi Redmi Note 4, even with the top platform, MediaTek does not pull, the model differs from its predecessors, but not too much. Probably, it is advisable to expect a decline in the price of this unit. Not bad and good screen, cameras, sound, communication capabilities, level of autonomy, the presence of a fingerprint scanner - all this has already been, the novelty did not bring any special improvements. For example, I would finally want to see in all Xiaomi smartphones wider support used by Russian LTE frequency range operators, as well as the presence of NFC is at a minimum. The smartphone is definitely not bad, but to offer more than other producer products, our hero, oddly enough, could not.

Not so long ago, Xiaomi launched a modification of the Redmi Note 4 smartphone, which is equipped with 4 GB of operational and 64 GB of integrated flash memory. Note that this is an international model designed for sale outside of China. It is based not on the chipset from MediaTek, which worked not in the best way in the original last year's model, but on the basis of the Qualcomm processor. Running forward immediately say that the difference between these smartphone on the basis of two chipsets and with each volume of RAM is just colossal.

By the way, at the bottom of the packaging, information about the specific modification is written in small font, that is, in this case, Redmi Note 4 with 4 GB of RAM and 64 GB ROM in black color. The right is information about the date of production - April 2017. It is at that time that the first modifications of this mobile device with an increased amount of RAM were received to the market.

Inside the package, you can detect the smartphone itself, on the front of which a matte protective film is pasted, a branded power adapter in black on 2A (5W), a paper clip for opening a lot under the SIM card, a black MicroUSB cable for recharging and synchronization with a computer, as well as warranty Coupon and a very brief instruction. There is nothing more in the box.

Specifications Xiaomi Redmi Note 4

Screen	IPS, 5.5-inch with a resolution of 1920 per 1080 pixels, 401 ppi
CPU	8-nuclear Qualcomm Snapdragon 625 with a clock frequency of 2.0 GHz
Graphic accelerator	Adreno 506.
RAM	4 GB
Permanent memory	64 GB
Main camera	13 MP Main Camera with Double LED Flash, Phase Autofocus and HDR Support
Front-camera	5 MP with FHD video recording support (1080p)
Battery	4100 mAh.
Interface	MicroUSB.
Modules	Wi-Fi 802.11 A / B / G / N, Bluetooth 4.1, A-GPS, GPS, GLONASS, IR port, FM radio, LTE
Memory card slot	there is
Operating system	MIUI 8.
Dimensions and weight	151 x 76 x 8.5 mm, 165 grams

First impressions and build quality

It is always interesting to keep a new smartphone in your hands, especially if it is Xiaomi product. The thing is that this company has never burned on the quality of the materials and the quality of the assembly. Yes, marriage certainly can be, but this is one case per million. Moreover, the probability of meeting the defective iPhone is much higher than even a budget smartphone under the Xiaomi brand.

The Xiaomi Redmi Note 4 smartphone has quite impressive dimensions, but the cause of this is a large 5.5-inch screen, which is covered with 2.5D-glass. The body of the mobile device is made of metal, but on the upper and lower parts of the back cover there are plastic parts under which the antenna modules are located.

Let's immediately say that such a decision, judging by the experience of exploitation, made it possible to improve the quality of the reception, because in places with a bad signal level, this device confidently holds 2-3 antenna sticks, while the iPhone SE or iPhone 7 is only one.

On the back cover there is a single chamber, covered with a protective glass, resistant to the appearance of scratches, double LED flash and fingerprint scanner. At its lower part there is a branded logo of the manufacturer, as well as the glued sticker with information about the model number and the place of production. It can be easily accessible without any traces on the case.

The facial part of the mobile device boasts a large 5.5-inch display with a small side frame. Directly under it are three sensory buttons that are intended for navigating the Android operating system. Over the screen there is a conversational speaker, front camera, approximation and illumination sensors, as well as a LED indicator that glows in various colors depending on the events.

On the lower end of the REDMI Note 4 metal case, the MicroUSB connector is located, as well as the holes for the speaker and the microphone. The upper part of the mobile device has the usual 3.5 mM audio connector, another microphone and infrared port (IR), which can be used to control home appliances and electronics. The right end sheltered the volume rocker and the power / lock button. On the left side of the housing, only a slot is placed under two SIM cards, or one SIM card and one microSD standard memory card with a capacity of up to 128 GB.

The housing of the smartphone is assembled very well. Nowhere will not creak anything and not the backup. All the details are perfectly adjusted to each other, so you can put a solid ten for the quality of the assembly. As for the first impression of the smartphone, it is positive. The smartphone is perfectly in hand, thanks to the rounded 2.5D glass and rounded edges of the case.

MIUI 8 operating system

When you first turn on the Xiaomi Redmi Note smartphone, 4 of all its owners welcomes the MIUI 8 operating system, which, as mentioned earlier, is global, therefore, there is already Russian, Ukrainian and hundreds of other languages. In other words, no additional problems with flashing and updates - all updates will fly "by air".

You can talk about the advantages of Miui 8 for a long time, but we will try to fit all the basic facts about this operating system in several paragraphs. The owner of the iPhone she will definitely like much stronger than naked Android. The thing is that in the classic OS from Google, the list of installed applications and desktops are two completely independent things from each other, whereas in iOS 10 all this is unlined into one.

The MIUI 8 system is built on the same principle, that is, there is no list of programs - there are only desktops on which the icons of the entire installed software are displayed. There can also be placed any widgets.

The appearance of the Miui 8 software add-in does not cause unpleasant sensations and desire to replace it with something else. For an example, the SAMSUNG UI shell in Galaxy S8 wants to immediately change to some Nova Launcher, but most likely it depends on personal preferences.

The MIUI 8 operating system is pleasantly surprising with its beauty, minimalistness and simplicity. REDMI Note 4 smartphone owners can customize everything at their discretion, spending on this minimum time. This is definitely happy because most of the smartphones on Android are subject to a fear of complex customization, due to which thousands of people eventually go to the iPhone.

I would like to believe that the MIUI operating system will continue to develop in this direction and further, becoming more convenient every year, faster and functional. By the way, yes, lovers a supporter of firmware will delight a huge assortment of custom operating systems, among which there is a Cyanogen MOD assembly. This smartphone is the real dream for Android fans.

Screen

Using the smartphone for some time, you can draw conclusions about its IPS screen, which has a large brightness margin. Thanks to the last, information from the screen can be read even with bright day lighting. It can be especially relevant in the summer season, when most of the time of day on the street is light.

The saturation and contrast of the REDMI Note 4 screen does not cause any complaints. Matrix with a resolution of 1920 on 1080 pixels (Full HD) exceeds the picture without any distortion, and see individual pixels of human eye is not capable. At the minimum brightness, information from the screen is comfortable reading even in complete darkness.

Viewing angles, weak side of many low-cost Xiaomi smartphones, in the Redmi Note 4 model are at a high level. If you look at the screen Mobile devices from any of five sides, then the picture will continue to remain as saturated and juicy. Speaking about the screen of this smartphone, you can put as an example in the iPhone 6S Plus. In our opinion, they are comparable in all indicators, with the exception of one.

The fact is that all Xiaomi budget smartphones, worth less than $ 300, do not have a good anti-reflective coating, so when the sun's direct hit, the picture may be practically unreadable. In more expensive mobile devices, an anti-reflective coating has long been applied for solutions, so I would like to see it in the next generation of all smartphones from the Redmi ruler.

If you rate the smartphone screen on a ten-point scale among all IPS matrices, then it can be safely put 9 out of 10. One score is removed due to the lack of this anti-reflective coating.

Performance

Modifications of the Xiaomi Redmi Note 4 smartphone on the basis of the MediaTek chipset were failed, even despite the attempts by the Chinese corporation to correct the situation using updates. Many processors from this manufacturer are actively overheated at high load, as a result of which their productivity drops significantly. This process is called trotting.

The model of a smartphone with 4 GB of RAM and the Qualcomm Snapdragon 625 database of the Qualcomm Snapdragon 625 is not confirmed on the basis of the 8-nuclear processor of Qualcomm Snapdragon 625. Moreover, make this mobile device make it a good warm up - the task is not from the lungs. Obviously, the chipset from the American corporation is much better, more stable and more reliable. It highlights less heat, it will require less energy and even a little more productive. While MediaTek does not learn to make normal chipsets, I would not like to see its products in future Xiaomi smartphones, as it can mean new problems.

Of course, the Snapdragon 625 chipset is far from the most powerful in the world, but its productivity is enough to fulfill all the basic tasks. Playing at the GTA San Andreas, World of Tanks Blitz or Minecraft can be on average settings with a nutritional resolution of 1920 to 1080 pixels (Full HD). Due to the fact that this modification is equipped with 4 GB of RAM, the smartphone can simultaneously hold open about two dozen "light" programs, such as a calculator, mail, messenger, etc.

Nevertheless, it is worth noting that the MIUI 8 operating system has built-in settings designed to automatically unload applications that are not used during a period of time. It is very convenient, especially for a novice user, as automation in the system will not allow you to quickly discharge the battery. These settings can be adjusted to your needs by visiting the settings called "Energy Saving".

Installation of 4 GB of RAM made it possible to make a premium middle class from the Redmi Note Note 4 from the Redmi Note Smartphone. The device confidently performs all everyday tasks, and in the Google Chrome web browser, about 25-30 deposits can be opened and all at this point will be in RAM. The indicator is good, because even the iPhone 7 is not under power.

Of course, if you have the opportunity, it is necessary to buy Xiaomi Redmi Note 4 in modifications with 4 GB of RAM. The price difference is not so big to lose additional power, which someday it is accurately useful. In addition, in this case, the volume of built-in memory will increase to 64 GB, and it is known, never happens too much.

Cameras

Smartphone Xiaomi Redmi Note 4 with 4 GB of RAM boasts 13 MP Main Camera, which is capable of writing video in a resolution of 1080p. It has a F / 2.0 diaphragm, a phase autofocus and a double LED flash. The MIUI 8 operating system is embedded in the camera, with which you can manually set many parameters for shooting.

Examples of photos:

There is a huge variety of regime - "Improvement", "Voice", "Tilt-Shift", "Timer", "Alignment", "Scene", "Panorama", "Management" and even "Night Mode". All of them, in essence, allow you to achieve certain effects or use any functions.

The main chamber makes good photos in conditions of good and medium light, but there is a light source somewhere abyss, as the quality of the pictures immediately falls. The same can be said about the video recording - the worse the level of illumination, the lower the detailing.

Note that if the lighting is good, and the object is nearby, then the photo on the main chamber of Redmi Note 4 will be very good in quality. There is even a rear-line blur, which is usually typical of only expensive mobile devices, or models with a double chamber.

The front camera of the smartphone has 5 MP permissions with a diaphragm F / 2.0 and support for recording video in 1080p. It's not enough stars from the sky, but it can still provide good self-sieves. Of course, no matter what high detail even with medium light and speech can, but to publish snapshots in Instagram or social network, it will quite fit.

The MIUI 8 operating system is built in the possibility that allows you to choose one of several photo filters and impose it to a photo at the time of shooting. The function is definitely extremely useful and comfortable.

All photos in original quality are available.

Battery

This smartphone has a battery with a capacity of 4100 mAh with support for quick charging function at 2a / 5V speed. As you can see, its container is large enough, but it is still not enough to provide two working days without recharging. It is a large 5.5-inch IPS screen, which consumes a large amount of electricity on the maximum brightness.

Overnight with an activated cellular network (one SIM-card), connected to Wi-Fi and a Bluetooth activated module, the Redmi Note 4 smartphone loses about 3-5% of the battery charge. This is a good indicator that can be significantly reduced when moving a mobile device in the airline for sleep time.

If we talk about everyday use, then the devices are enough for approximately 7-9 hours of screen operation at medium brightness. Again, this is a very impressive indicator that will allow you to refuse to recharge the smartphone during the whole working day. Until the end, the second smartphone can no longer reach, but if you activate the power saving mode, built into the MIUI 8 firmware, it will be accurate.

As a result, the Xiaomi Redmi Note 4 smartphone on the SNAPDRAGON 625 processor for autonomy can be put 9 points out of 10 possible. Nevertheless, I would like to have time for autonomous work in 2 full working days, as a Redmi 4X smartphone. It would be possible to achieve this using the installation not an IPS matrix, but OLED. Such a solution will reduce the level of power consumption, but will increase the cost of the entire smartphone.

cellular

Smartphone Redmi Note 4 in the international modification (Global Version) perfectly works in all networks of the fourth generation LTE 4G in Russia. The device has support for HD calls that provide high quality sound transmitted. Microphones cope with their task well - perfectly record the sound, and with the help of additional microphones on the housing, almost all external noises are cut off, be it noise from the passing train, the roar from the motor or a powerful wind.

The device has a slot to install two SIM cards, or one SIM card and one microSD memory card up to 128 GB inclusive. When using two SIM, only one of them can work on the fourth-generation LTE 4G network. At the same time, they both can simultaneously operate in 2G and 3G networks, which is especially relevant for remote areas located away from large cities.

There are no complaints for the quality of receipt of the signal of the cellular network to the smartphone. He catches the 3G and 4G LTE network even where it is not under the iPhone 7 or iPhone SE. This is definitely a big plus that for many people can become a determining factor when choosing a smartphone.

Features that pleased

This mobile device did not cost and without some features that were really greatly pleased. The first among those became an IR port, with which you can manage home appliances. All setting is performed through the MI Remote application preset. It is convenient when, instead of several remotes from the TV console, TV and the music center, it is only one, and this is a smartphone that is always and everywhere is at hand.

As we mentioned earlier, a LED light bulb is located right above the screen of a smartphone. It can glow different colors, as well as quickly or slowly blink. So, for example, sitting at the computer you can immediately understand that someone called on the phone, or an important notification came - all this is configured within the MIUI operating system 8. If some basic settings appear, you can always install third-party extensions From Google Play, which will allow you to set up every detail at your discretion.

The fingerprint scanner, located on the back cover, works surprisingly quickly. Moreover, it works even when the smartphone is in the stage of deep sleep. It is enough to make a finger to the scanner, as the device instantly unlocked and will be ready to work. Not all smartphones have such functionality. As an example, take the iPhone 7 in which it is necessary to first activate the screen, and only then unlock the device using Touch ID.

It is very nice that the Redmi Note 4 smartphone supports the "hot" replacement of SIM and MicroSD memory cards. It is extremely convenient, especially when you need to regularly rearrange the cards of the operators. The device, after each such operation, you do not need to restart - everything starts to work immediately and almost instantly. For comparison, the flagship Galaxy S8, for 54,990 rubles, has to reboot after each such operation, which is greatly annoying.

Conclusion

Smartphone Xiaomi Redmi Note 4 is a universal in its kind device for those buyers who want to buy an advanced mobile device for all occasions. It is universal in all respects, ranging from performance and ending with autonomous time. The presence of slots for SIM cards and the MicroSD memory card allows you to use it directly with two cellular operators, or expand memory up to 128 GB, which can then be downloaded hundreds of games, programs, movies and serials. If you relate all the pros and cons, then the first will be much more.

Pros:

• Quality assembly
• Stylish design
• Advanced fingerprint scanner
• Understandable ral MIUI 8
• Excellent IPS-screen with good viewing angles
• Good 2G / 3G / 4G signal reception
• An impressive autonomy
• IR port
• MicroSD support up to 128 GB
• High performance
• Good cameras

Minuses:

• There is no anti-reflective coating on the screen
• No contactless module NFC
• MicroUSB connector (I would like USB Type-C)

You can buy a REDMI Note 4 smartphone in several modifications, top-like among which is a version with 4 GB of RAM and 64 GB ROM. It costs a little more expensive than the rest, but overpaying is worth it. Additional operational and permanent memory will never be extra, especially since the performance and speed of the MIUI 8 operating system depends on the first.

Acquire Xiaomi Redmi Note 4 With 4 GB of RAM and 64 GB, the drive can be in the official online store at a price of 16,990 rubles.

Do not miss your chance! By June 2, inclusive, everyone has a unique feature of Xiaomi Redmi Airdots, spending only 2 minutes of his personal time.

Join us in

It would seem that even recently, Siaomi released the telephone Redmi Note 3, and already appeared on the light and "four". Is it possible to say that the version of Redmi Music "Four" has some significant difference from the previous phone line? Or there are no significant differences, and it's all about the desire of manufacturers to earn more? You can understand by reading the review on the site of Arstile or reading our honest review of Xiaomi Redmi Note 4.

Comes with a gadget with a USB cable, a power adapter and a set of documents. The box, as usual, is not very high. Included there is an instruction for those who face Siaomi products for the first time and does not know how to manage the phone.

Curious Fact: Xiaomi Redmi 4 in the appearance of the campaign is not at all on the "Troika", but on the flagship Redmi Pro. Both gadgets are supplied in a solid metal housing with plastic inserts. And there and there see the identical perforation for the dynamics. The only difference is that the Pro version has two cameras and a physical return button on the menu start screen. Camera, by the way, the Pro is worth it where the manufacturers of Redmi Note 4 have placed a scanner for fingerprint.

Front surface The device applied not only the screen, but also the conversational speaker, the front camera and the light sensor. Just below the screen there are sensory buttons "Home", "Back" and "Menu". Using the keys on the right pane, the volume and lock and turn on the screen is performed. On the left there is a SIM card slot or an additional memory card.

Audio output, microphone and infrared port brought to the top end. The bottom is located a connector for a USB cord, and on the right and to the left of it perforations for speakers. MHL standard is not yet.

Finally, behind the already mentioned fingerprint scanner and the master camera lens along with a two-color LED flash.

The classic version of Xiaomi Redmi Note 4 3 is made, oddly enough, not in black color. The developers are painted panel in white, gold or dark gray, leaving black aside.

Give gifts

Convenience

Overlooking Xiaomi Redmi Note 4 smartphone, it should be noted that it is very convenient to use. The housing is not bent, it does not creak when twisting. The fact that the body is made of metal, we feel when we take a smartphone in hand - the device is sufficiently heavy. But it pleases that the metal is truly reliable. This is an excellent aluminum alloy. In Redmi Note 3 metal is an order of magnitude thinner, which is felt by touch.

Screen dimensions remained at the usual level - 5.5 inches. It is good that all connectors remained in the usual places, and it is not necessary to retire to work with the phone. Already after a short time working with the gadget, you can easily find all the physical buttons blindly. The sensory buttons are highlighted.

Let's say a few words about the sensor for prints. The finger falls on it perfectly, and the system can recognize not only index, and any other finger.

Display

The fourth laptop screen recognizes up to 10 touches at the same time. Its resolution - 1920x1080 pixels at a density of 401 ppi. To protect the screen on its surface, a rounded glass of 2,5d is applied. Oleophobic coating applied over.

Xiaomi Redmi Note 4 Global Version will delight its owners thought out the screen. Good visibility is provided with any degree of illumination. Colors are made by black and juicy, with the desired level of contrast. In the display settings, you can change the color temperature from cold shades to warm and back, or use the read mode in which ultraviolet radiation will automatically be blocked. If you wish, through certain applications, the read mode may turn on automatically.

In general, Siaomi's smartphone screen has once again pleased. This is already becoming a manufacturer's branded sign.

Interface

The phone runs on the basis of Android 6.0 software under the MIUI 8 branded interface. The standard firmware includes several basic languages, including Russian. Additional programs are minimum - only the most basic is included. It pleases, because the user can always go to Google Play and download the app needed to him.

Traditionally, for MIUI, all applications focused on desktops. Their number is not limited to anything, so create how much your heart. For convenience, you can also sort applications by folders.

Through the settings it is possible to post a "lightweight mode" menu. He suggests that the user will see the major icons of only the most necessary applications in the use of applications. There is also a "second space" mode. If it is activated, a full-fledged duplicate interface will be created, and in it all applications and data will be different. It is convenient if one phones use two people either one and the same user applies a gadget and at work, and in personal life. The second profile has its own memory section, so the data placed in different profiles will not be mixed. To quickly switch from one profile to another, just pressing the SWITCH icon. At the request of the owner of the phone, switching can occur only when the procedure is confirmed through a password or fingerprint.

Using the swipe to the left or right side of the "Home" button, "one-handed mode" is activated, in which a reduced screen appears, convenient to control one hand. An indispensable thing, especially if you have to use the phone, in parallel, keeping the handrail in transport.

Specifications

Do not look for Xiaomi Redmi Note 4 Snapdragon 625 - the manufacturer of this gadget decided to use the MediaTek Helio X20 processor. At the presentation of the NEW, representatives of the company said that the performance of the fourth model of the line will be about 60% higher than that of the third, and at the same time the energy consumption of the gadget will be reduced by a third.

A decent level of graphics is provided by a four-core accelerator MALI-T880 MP4. RAM of only 2 GB, built-in - 16 GB, of which the user can actually fill up to 11 GB. Of course, this is not enough, but you can additionally buy a memory card volume up to 128 GB. The slot for it is combined with a symbol slot, so you need to choose - or the second communication card or memory card.

Improved modification of the model assumes the presence of 3 GB of RAM and 64 GB built-in. The configuration with 32 GB built-in memory is not. Demand on the market on Redmi Note 4 64 GB is even greater than the standard version, let the price for it and higher. This is understandable - it is unlikely that someone really has enough of 16 GB of disk space, and you don't really want to install the memory card to the detriment of the SIM card.

Popular benchmark for assessing the performance of smartphones Antutu When testing the device, a high 81604 points gave the device. In fact, the gadget will be able to solve any popular task today that the user puts in front of the mobile device. Games are on high settings and without lags.

Camera

Permission of the main camera model - 13 megapixel. According to representatives of the company, an Omnivision sensor is installed, and one of the fresh and most effective developments. Lens with five lenses and aperture F / 2.0 are complemented by phase autofocus and LED two-color flash. The front camera also turned out quite decent - 5 Mp with aperture F / 2.0.

If you carry out a global analysis of the chamber after its use during a couple of weeks, it can be said that it perfectly performs the color rendition task, does not allow errors during exposure and ensures that the maximum detailed images are obtained regardless of the level of lighting. The main plus of the front camera is a fixed focus. For good snapshots, we recommend using it only with sufficient lighting.

The chamber has enough modes for shooting: "Panorama", "alignment", "manual mode", "night mode", "timer", "voice", "scene", "improvement". In manual mode, you can only put on your own white and ISO balance, and the distance and exposure remain fixed parameters.

Battery

The model is equipped with a battery with a capacity of 4100 mAh, it is impossible to remove it and replace it. For the full charge of the battery, you need about two and a half hours. In terms of autonomy, the Antutu gives the phone 9215 points - it is almost twice as many averages.

In the settings, the user can select the energy consumption modes - balanced or productive. You can also configure automatic switching off the energy saving mode for a particular application.

We hope to read our Xiaomi Redmi Note 4 review was useful for you. We also recommend to familiarize the video on gadgets on the official YouTube Channel Arstale. You can buy this gadget in any technology store, for example, in the online store Allo. Soon, wait on our website. Review Xiaomi Redmi Note 4 Pro.

Information about the brand, model and alternative names of a particular device, if any.

Design

Information on sizes and weight of the device presented in different units of measurement. Used materials offered colors, certificates.

Width Information about width - meant the horizontal side of the device when it is standard orientation during use.	76 mm (millimeters) 7.6 cm (centimeters) 0.25 ft (ft) 2.99 in (inches)
Height Information about height - meant the vertical side of the device when it is standard orientation during use.	151 mm (millimeters) 15.1 cm (centimeters) 0.5 ft (ft) 5.94 IN (inches)
Thickness Information about the thickness of the device in different units of measurement.	8.35 mm (millimeters) 0.84 cm (centimeters) 0.03 ft (ft) 0.33 in (inches)
Weight Information about the weight of the device in different units of measurement.	175 g (grams) 0.39 LBS (pounds) 6.17 OZ (oz)
Volume The approximate volume of the device calculated on the basis of the size provided by the manufacturer. Refers to devices with a form of rectangular parallelepiped.	95.82 cm³. (Cubic centimeters) 5.82 In³. (cubic inches)
Colors Information about the colors in which this device is available on sale.	Grey Silver Golden The black Blue
Case Production Materials Materials used for making the device body.	Aluminium alloy

SIM-card

The SIM card is used in mobile devices to save data certifying the authenticity of mobile services subscribers.

Mobile networks

Mobile network is a radio system that allows multiple mobile devices to exchange data among themselves.

GSM. GSM (Global System for Mobile Communications) is designed to replace an analog mobile network (1G). For this reason, GSM is very often called 2G mobile network. It is improved by adding GPRS (General Packet Radio Services), and later and EDGE (Enhanced Data Rates for GSM Evolution).	GSM 900 MHZ. GSM 1800 MHz. GSM 1900 MHz.
CDMA CDMA (Code-Division Multiple Access) is a channel access method used in communications in mobile networks. Compared to other 2G and 2.5G standards, such as GSM and TDMA, it provides higher data transfer rates and the ability to connect more consumers at the same time.	CDMA 800 MHz.
W-CDMA W-CDMA (Wideband Code Division Multiple Access) is an air interface used by 3G mobile networks, and is one of the three main UMTS essential interfaces along with TD-SCDMA and TD-CDMA. It provides more than high speed data transfer and the ability to connect more consumers at the same time.	W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz
TD-SCDMA. TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is 3G mobile networks. It is also called UTRA / UMTS-TDD LCR. It is designed as an alternative to W-CDMA standard in China by the Chinese Academy of Telecommunication Technologies, companies in Dartan Telecom and Siemens. TD-SCDMA combines TDMA and CDMA.	TD-SCDMA 1880-1920 MHZ TD-SCDMA 2010-2025 MHZ
LTE LTE (Long Term Evolution) is defined as the fourth-generation technology (4G). It has been developed by 3GPP based on GSM / EDGE and UMTS / HSPA in order to increase the capacity and speed of wireless mobile networks. The subsequent development of technologies is called LTE Advanced.	LTE 850 MHZ. LTE 900 MHZ. LTE 1800 MHZ. LTE 2100 MHZ. LTE 2600 MHz. LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38)

Mobile communication technology and data transfer rate

Communication between devices in mobile networks is carried out through technologies that provide different data transfer rates.

Operating system

The operating system is system software, controlling and coordinating the hardware components in the device.

SOC (crystal system)

The system on the crystal (SOC) includes all the most important hardware components of the mobile device in one chip.

SOC (crystal system) The system on the crystal (SOC) integrates various hardware components, such as a processor, a graphics processor, memory, periphery, interfaces, etc., as well as the Softera needed for their operation.	MediaTek Helio X20 (MT6797)
Technological process Information on the technological process to which the chip is made. The nanometers in the nanometers measured half the distance between the elements in the processor.	20 nm (nanometers)
Processor (CPU) The main function of the processor (CPU) of the mobile device is the interpretation and execution of instructions contained in software applications.	2x 2.1 GHz Arm Cortex-A72, 4x 1.85 GHz Arm Cortex-A53, 4x 1.4 GHz Arm Cortex-A53
Processor discharge The processor bit (bits) of the processor is determined by the size (in bits) of registers, targeted tires and tires for data. 64-bit processors have a higher performance compared to 32-bit, which are more productive for their part than 16-bit processors.	64 bits
Architecture of a set of commands Instructions are the commands with which the software is set / manages the operation of the processor. Information about the command set (ISA) that the processor can perform.	Armv8-A.
Kingdom of processor cores The core of the processor performs software instructions. There are processors with one, two or more nuclei. The presence of a larger number of nuclei increases performance, allowing parallel execution of a plurality of instructions.	10
Processor clock frequency The processor clock frequency describes its speed by means of cycles per second. It is measured in megahertz (MHz) or Gighellians (GHZ).	2100 MHz (Meghertz)
Graphic Processor (GPU) The graphics processor (GPU) processes the calculations for various 2D / 3D graphic applications. In mobile devices, it is used most often by games, consumer interface, video applications, etc.	ARM MALI-T880 MP4
Kolynism of the core processor Like a processor, the graphics processor consists of several working parts, which are called nuclei. They handle graphic calculations of different applications.	4
Clock frequency graphics processor The speed of work is the clock frequency of the graphics processor, which is measured in Meghertz (MHz) or Gighellians (GHz).	780 MHz (Meghertz)
RAM (RAM) RAM (RAM) is used by the operating system and all installed applications. Data that are stored in RAM is lost after turning off or restarting the device.	3 GB (Gigabytes) 4 GB (gigabytes)
RAM type (RAM) Information about the type of RAM (RAM) used by the device.	LPDDR3
Number of RAM channels Information about the number of channels of RAM is integrated into SOC. More channels means higher data transfer rates.	Two-channel
RAM frequency RAM frequency determines its speed, more specifically, the speed of reading / writing data.	800 MHz (Meghertz)

Built-in memory

Each mobile device has a built-in (non-removable) memory with a fixed volume.

Memory cards

Memory Cards are used in mobile devices to increase the amount of memory to save data.

Screen

The mobile device screen is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Type / Technology One of the main characteristics of the screen is the technology on which it is manufactured and on which the quality of the information image directly depends.	IPS.
Diagonal Mobile devices the screen size is expressed by the length of its diagonal, measured in inches.	5.5 in (inches) 139.7 mm (millimeters) 13.97 cm (centimeters)
Width Approximate screen width	2.7 in (inches) 68.49 mm (millimeters) 6.85 cm (centimeters)
Height Approximate screen height	4.79 IN (inches) 121.76 mm (millimeters) 12.18 cm (centimeters)
Aspect ratio The ratio of the size of the length of the screen to its short side	1.778:1 16:9
Resolution Screen resolution shows the number of pixels vertically and horizontally screen. Higher resolution means a clearer image item.	1080 x 1920 pixels
Pixel density Information on the number of pixels on a centimeter or an inch screen. Higher density allows you to show information on the screen with clearer items.	401 ppi (pixels per inch) 157 ppcm. (pixels for centimeter)
Color depth The color color depth reflects the total number of bits used for the color components in one pixel. Information about the maximum number of colors that the screen may show.	24 bits 16777216 Flowers
Screen Approximate area in percent, occupied by the screen on the front panel of the device.	72.9% (interest)
Other features Information about other features and screen characteristics.	Cucitive Multitach Resistance to scratches
	2.5D CURVED GLASS SCREEN 1000: 1 Contrast Ratio 450 CD / m² 72% NTSC

Sensors

Various sensors perform various quantitative measurements and convert physical indicators to signals that the mobile device recognizes.

Main camera

The main camera of the mobile device is usually located on the back of the case and is used for photo and video filming.

Sensor model	Samsung s5k3l8.
Sensor type	Isocell.
Sensor size	4.69 x 3.52 mm (millimeters) 0.23 in (inches)
Pixel size	1.127 μm (Mikrometters) 0.001127 mm (millimeters)
Crop-factor	7.38
ISO (photosensitivity) ISO indicators determine the level of photosensitivity of the photo sensor. The lower indicator means more weak sensitivity and vice versa - higher indicators mean higher photosensitivity, i.e. the better ability of the sensor to operate under low light conditions.	100 - 1600
Diaphragm	f / 2.
Focal length	3.5 mm (millimeters) 25.82 mm (millimeters) * (35 mm / Full Frame)
Type of outbreak The most common types of flashes in mobile devices cameras is LED and xenon flashes. LED flashes give softer light and, unlike brighter xenon, are used in video photography.	Double LED
Image resolution One of the main characteristics of mobile devices cameras is their resolution that shows the number of pixels horizontally and vertically images.	4160 x 3120 pixels 12.98 MP (megapixels)
Allowing video Information on the most supported resolution during video recording device.	1920 x 1080 pixels 2.07 MP (megapixels)
Information on the maximum number of frames per second (FPS) supported by the device when video recording with a maximum resolution. Some of the main standard shooting and playback speeds are 24p, 25p, 30p, 60p.	30 frames / sec (Frames per second)
Characteristics Information on other software and hardware characteristics associated with the main chamber and improve its functionality.	Autofocus Serial shooting Digital zoom Geographic labels Panoramic shooting HDR shooting Touch focus Face Recognition White balance setting Setting up ISO. Exposition compensation Self-timer Scene selection mode
	Phase Detection. 5-Element Lens 720p @ 120 FPS

Additional camera

Additional cameras are usually mounted above the device screen and are mainly used for video dealers, gesture recognition, etc.

Sensor model Information about the manufacturer and model of the photo sensor used in the device chamber.	Samsung s5k5e8.
Sensor type Digital cameras use photo sensors for photography. The sensor, as well as optics, are one of the main chamber quality factors in the mobile device.	CMOS BSI (BACKSIDE ILLUMINATION)
Sensor size Information about the sizes of the photo sensor used in the device. Usually cameras with a larger sensor and with a smaller pixel density offer higher image quality despite the lower resolution.	2.9 x 2.15 mm (millimeters) 0.14 in (inches)
Pixel size The smaller pixel size of the photo sensor allows you to use more pixels per unit area, thus increasing permitting ability. On the other hand, a smaller pixel size can have a negative impact on the quality of the image at high levels of light sensitivity (ISO).	1.133 μm (Mikrometters) 0.001133 mm (millimeters)
Crop-factor Crop-factor is the ratio between the size of the full-frame sensor (36 x 24 mm, the equivalent frame of the standard 35 mm film) and the size sensor sizes of the device. The specified number is the ratio of the diagonals of the full-frame sensor (43.3 mm) and the photo sensor of a particular device.	11.99
Diaphragm The diaphragm (F-number) is the size of the aperture opening that controls the amount of light reaching the photo sensor. A lower F number means that the aperture hole is greater.	f / 2.
Focal length The focal length is the distance in millimeters from the photo sensor to the optical center of the lens. The equivalent focal length is also indicated, providing the same field of vision field when full-frame (Full Frame) chamber.	3.5 mm (millimeters) 41.95 mm (millimeters) * (35 mm / Full Frame)
Image resolution Information about the maximum permissive ability of an additional camera when shooting. In most cases, the permission of an additional chamber is below the one that has the main chamber.	2560 x 1920 pixels 4.92 MP (Megapixels)
Allowing video Information on the maximum supported resolution when video recording is an additional camera.	1280 x 720 pixels 0.92 MP (megapixels)
Video - personnel frequency / frames in sec. Information on the maximum number of frames per second (FPS) supported by an additional camera with a video with a maximum resolution.	30 frames / sec (Frames per second)

Audio

Information on the type of loudspeakers and supported by the audio technology.

Location

Information on navigation and location devices supported by the device.

Wi-Fi

Wi-Fi is a technology that provides wireless communication for data transfer to close distances between different devices.

Bluetooth

Bluetooth is the standard of secure wireless data transfer between different devices of different types for short distances.

USB

USB (Universal Serial Bus) is an industrial standard that allows different electronic devices to exchange data.

Plug for headphones

This is an audio connector, which is also called the audio connector. The most widely used standard in mobile devices is 3.5 mm headphone jack.

Connecting devices

Information on other important connection technologies supported by the device.

Browser

The web browser is a software application for accessing and viewing information on the Internet.

Browser Information on some basic characteristics and standards supported by the device browser.

HTML HTML5. CSS 3.

Sound File Formats / Codecs

Mobile devices support different formats and codecs of sound files that are respectively preserved and encoded / decoded digital audio data.

Formats / Codecs Video Files

Mobile devices support different formats and codecs of video files that are respectively preserved and encoded / decoded digital video data.

Battery

Mobile batteries differ from each other in its capacity and technology. They provide an electrical charge needed for their operation.

Capacity The battery capacity shows the maximum charge that it is capable of saving, measured in milliamme aperture.	4100 mA · h (milliamper watch)
A type The type of battery is determined by its structure and, more specifically used by chemicals. There are different types of batteries, while most often in mobile devices are used lithium-ion and lithium-ion-polymer batteries.	Li-Polymer (Lithium Polymer)
Output power adapter Information on the power of the electric current (measured in amperes) and electrical voltage (measured in volts), which delivers the charger (output power). Higher output power provides faster battery charging.	5 V (Volta) / 2 A (Amperes)
Characteristics Information on some additional characteristics of the device battery.	Fast charge Non-removable
	Battery Model: BN43

Specific absorption coefficient (SAR)

The SAR level indicates the number of electromagnetic radiation absorbed by the human body during using the mobile device.

SAR level for head (EU) The SAR level indicates the maximum number of electromagnetic radiation, which is subject to the human body if you hold the mobile device next to the ear in the negotiation position. In Europe, the maximum allowable SAR value for mobile devices is limited to 2 W / kg per 10 grams of human tissue. This standard is established by the Cenelec Committee in accordance with IEC standards, subject to ICNIRP instructions from 1998.	0.724 W / kg (Watt per kilogram)
SAR level for body (EU) The SAR level indicates the maximum number of electromagnetic radiation, which is subject to the human body if you keep your mobile device at the thigh level. The maximum allowable SAR value for mobile devices in Europe is 2 W / kg per 10 grams of human tissue. This standard is established by the Cenelec Committee subject to the ICNIRP instructions from 1998 and IEC standards.	0.674 W / kg (Watt per kilogram)
SAR level for head (USA) The SAR level indicates the maximum number of electromagnetic radiation, which is exposed to the human body if you hold the mobile device next to the ear. The maximum value used in the United States is 1.6 W / kg per 1 gram of human tissue. Mobile devices in the United States are controlled by CTIA, and FCC spends tests and sets them SAR values.	0.85 W / kg (Watt per kilogram)
Body SAR Level (USA) The SAR level indicates the maximum number of electromagnetic radiation, which is subject to the human body if you keep your mobile device at the thigh level. The highest permissible SAR value in the United States is 1.6 W / kg per gram of human tissue. This value is set by FCC, and CTIA controls the Mobile Device Compliance with this standard.	0.69 W / kg (Watt per kilogram)

Since the information about the Redmi Note 4 Pro model is quite small, many are wondering when this series of new generation comes out, and what is its fundamental differences from their previous analogue. However, if you look for information on the official website of Xiaomi, the Smartphone Redmi Note 4 has already come out, and it can be purchased.

The official release date of Xiaomi Redmi Note 4 Pro is January 20, 2017. At the same time, in Russia, it is more likely to meet the previous model on the Snapdragon 625 processor. What is due to - it is unambiguous to answer difficult. Nevertheless, it is known that the version is also on the Snapdragon 625 chip, but in general its characteristics are almost identical, without taking into account the increase in the built-in memory in 64 GB.

The SNAPDRAGON processor gives very good performance, even if we are talking about the launch of enough powerful games, for example, Modern Combat 5 or Asphalt 8. Having the usual RAM into 3 GB, 1,5 GB is available from it. The new smartphone, as the current users noted, boasts excellent screen quality when playing video in Full HD. I am glad and supporting video playback in 4K. However, from the minuses of the display - at the moment to find the tempered protective glass for the device is problematic.

Noticeable differences

With the release of Xiaomi Redmi Note 4 Pro, the manufacturer once again confirmed its status in the global market. The chip of the American production of Snapdragon, which is used in the assembly of the released smartphone, provides excellent performance, but not for the better, the graphic subsystem has changed. In this device, Adreno 506 graphics instead of Mali T880 MP4, and this suggests that the graphics accelerator is almost three times weaker.

According to the old version of Antutu, the smartphone scored to ninety thousand points, and in a new one - no more than seventy thousand. Nevertheless, it was not without improvement. For example, the same Snapdragon processor was made with a thinner technical process in 16 nm. For comparison, the same Helio X20 chip has indicators of 28 nm. Thanks to this improvement, the battery consumes much less charge.

The new Note 4 Pro is better than previous models and in terms of memory in two variations:

• RAM - 3 or 4 GB;
• Built-in memory - 32 or 64 GB.

This contains a built-in slot under the memory card. The display characteristics have not changed - the same 5.5 inches with the IPS matrix and the screen resolution in 1920 × 1080 points. Two cameras are installed - 15 MP basic and 5 MP frontal. Battery capacity - 4100 mAh. On average, this is enough to fifteen hours in a row to continuously use the Internet connection.

Give gifts

A little about characteristics

Appeared not so long ago, Xiaomi Redmi Note 4 Pro, in addition to the previously listed, has a number of the following parameters:

Operating system	MIUI 8 (Android 7.0)
Wireless connection	Wi-Fi, Bluetooth, A-GPS, Glonass, Baidow
Operator cards	2 Nano-SIM
Data network data networks	2G, 3G, 4G LTE
Features of the camera	Flash LED, F / 2.0, automatic focus, panoramic shooting
Built-in sensors	Gyroscope, compass, accelerometer, lighting, approximation, fingerprint scanner, Hall
Pixel density	High, 401 inch, Multitach
Color variations	Gray, silver, golden
Used surface	71%
Materials manufacturing	Metal, plastic
Parameters	76,0 × 151.0x8.4 mm
Weight	165 g

Despite the good parameters of the chamber, in reality it disappoints - high-quality pictures are obtained only with sunlight. In other cases, images are often blurred and without clarity. This also applies to the main chamber, and frontal. When shooting a video, a slowdown is available and a large number of filters.

Expect that the firmware does not appear in Xiaomi it would be at least strange, since this is a product of its own development of this company. However, those who have long appreciated this product are unlikely to want to engage in flashing for anything else.