Xiaomi Redmi Note 4X Review
1 Април 2017, 02:02:29
Specifications
Xiaomi Redmi Note 4X is equipped with a 5.5-inch IPS display with an FHD resolution and a 2.5D curved glass with scratch resistant properties. Its peak brightness and static contrast ratio are specified as being 450 cd/m2 and 1000:1, respectively. Coverage of the NTSC color space is detailed as being 72%, which is close to 100% of the sRGB space. The display panel is sourced out either from Tianma, or BOE. Under the hood, ticks a Qualcomm Snapdragon 625 MSM8953 chipset that features eight Cortex-A53 cores clocked at 2GHz and an Adreno 506 GPU clocked at 650MHz. The LPDDR3 RAM on board is single-channel, clocked at 933MHz and measures either 3GB or 4GB. The internal storage is of the eMMC 5.0 type and its capacity is either 32GB, or 64GB. The built-in memory can be expanded with up to 128GB. The chipset has an integrated X9 LTE modem that provides support for 2G GSM (850, 900, 1800, and 1900 MHz), 2.5G CDMA 800 MHz, 3G W-CDMA (850, 900, 1900, and 2100 MHz), 3G TD-SCDMA (1880-1920 and 2010-2025 MHz), 4G LTE-FDD (850, 1800, 2100, 2600 MHz), and 4G LTE-TDD (1900, 2300, 2500, and 2600 MHz) bands. The rest of the model's connectivity options include dual-band Wi-Fi 802.11 a/b/g/n, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Bluetooth 4.2, an infrared and a micro-USB 2.0 port with OTG support. The model works with the three main satellite positioning systems - GPS, GLONASS, and BeiDou. It is equipped with a rear-mounted fingerprint sensor made by Goodix or Fingerprint Cards. The rear camera features a 13-megapixel sensor, which is either a Samsung S5K3L8 ISOCELL one or a Sony IMX258 one. The sensor is coupled with a dual-tone LED flash, PDAF, and a 5-element lens with an f/2.0 aperture. On the front, a 5-megapixel Samsung S5K5E8 BSI sensor sits combined with an 85° wide-angle lens with an f/2.0 aperture. Power is supplied by a 4100 mAh battery with a 5V/2A fast charger. The accumulator should provide up to 18 hours of talk time and up to 264 hours of standby time. For complete details, here is the full list of Xiaomi Redmi Note 4X specifications.What's in the box
Xiaomi Redmi Note 4X is packed in a pristine white box. On the lid, there's information about the version of the model - in our case the 32GB one, and its name imprinted with a special effect on the surface. On the side of the lid, the full model name is written. On the bottom of the box, there's information about the basic parameters and certifications of the device. Usually, Xiaomi devices arrive with only the very basic accessories and the Redmi Note 4X is no exception. Inside the box, you will see the usual SIM tray pin, user manual, micro-USB cable and the charging adapter, which is for the usual US standard electric socket.Design, build and controls
Redmi Note 4X combines plastic with aluminum alloy in a one good looking and solid body that is comfortable to hold with one hand. The metal parts are the side frames and the back plate, while the plastic ones are the antenna bands caps, top and bottom part of the frame. In terms of appearance, it looks exactly the same as the Redmi Note 4 and its Snapdragon 625 variant. However, there are minor design details that differ. The first and more obvious one is the antenna bands design. The second is the placement of the infrared port, which in 4X is not centered on the top frame, but placed more to the right and the upper microphone hole. The rear edges are not chamfered. The front ones look like they are, but they are more rounded than actual chamfered edges. There are no visible screws on the bottom frame on both sides of the micro-USB 2.0 port. The rest is the same. The rear vertical sides are gently curved for improved handling experience. The antenna bands areas feature a debossed silver-colored line on the upper and lower part of the back. On the front, the 2.5D curved glass of the screen blends into the plastic display casing and the front edges, which enhances touch experience. The smartphone is beautiful and solid. It is relatively compact in height, measuring 151 mm, but in terms of width and depth, which measure 76 and 8.45 mm, respectively, the Redmi Note 4X is quite standard for a smartphone with a 5.5-inch display and a 4100 mAh battery. The 4X weighs 165 grams, which is lighter than the Redmi Note 4 with 10 grams. The model is available in five colors - pink, cyan, champagne, black, and silver. There's also a Hatsune Miku Special Edition of the model, which is in cyan color and features corresponding branding, Miku-inspired themes, and backgrounds, as well as a Mi powerbank and a case with Miku artwork, included in the package. We are reviewing a standard black Redmi Note 4X, which is quite stylish in this color.Display
Xiaomi Redmi Note 4X features a 5.5-inch IPS display with a resolution of 1080 x 1920 pixels. It is covered with a scratch resistant 2.5D curved glass. According to the specifications, the display panel has a static contrast ratio of 1000:1, a peak brightness of 450 cd/m2, and NTSC color space coverage of 72%. Xiaomi sources out the display panels from two providers - Tianma and BOE. Our review unit's display panel is from BOE (NT35532). If the display code says NT35596, then it is from Tianma. There are some settings under the Display menu, which will improve your experience with the display and they include a Reading Mode, which can be applied to selected apps, and the Colors & contrast options. We must say that for a budget smartphone, the display is almost excellent. It has a very good peak brightness of 425 cd/m2, which is even across the whole display area, meaning white luminance values in the center do not differ a lot from those in other areas of the screen. The black luminance values are not perfect but are good enough, and together with the white luminance values result in a very good contrast ratio of 1360-1390:1, which is higher than specified. Having a consistent contrast ratio across all brightness levels is a sign of a good display. The same applies to the temperature of the white point. In this case, it is not only consistent but also with a very good value of around 7800 K.Brightness | White luminance | Black luminance | Contrast | Color temperature |
---|---|---|---|---|
100 % | 424.655 cd/m2 | 0.307 cd/m2 | 1383 | 7897 K |
75 % | 325.134 cd/m2 | 0.234 cd/m2 | 1389 | 7849 K |
50 % | 226.309 cd/m2 | 0.165 cd/m2 | 1372 | 7830 K |
25 % | 123.901 cd/m2 | 0.091 cd/m2 | 1362 | 7802 K |
0 % | 16.703 cd/m2 | 0.012 cd/m2 | 1392 | 7801 K |
OS, UI and software
Our review unit arrived with MIUI 8.1 | Stable 8.1.12.0 (MCFCNDI) based on Android 6.0.1 Marshmallow and almost immediately updated to MIUI 8.2 | Stable 8.2.4.0 (MCFCNDL) also based on Android 6.0.1. Both versions are original China ROMs, which is fine as we prefer to work with original ROMs, especially when it is about MIUI. The lock screen is the usual one, but this time the left shortcut is to Mi Home. The right one is for the Camera app. On the top right corner is the shortcut to the Wallpaper carousel, which has disappeared in older versions of the UI. As usual, the apps are installed directly on screens successive to the home one and accessible by swiping to the left. This is the first MIUI with activated Smart Assistant that we see. It is accessed by swiping from the home screen to the right. There's an option in the Settings from where you can disable it. The home screen is the usual one with two rows of apps and a folder, all placed above the docked row of apps, including the Dialer, Messenger, MIUI Browser, and Camera. The folder is called Tools and contains useful apps such as Compass, Mi Remote, QR Scanner, etc. The Task Manager is accessed by tapping on the Menu button. It has the usual two styles of displaying apps - screen and icon one. For each application, you can access lock options and more info, by simply dragging it downwards. Dragging it upwards removes it from the Task Manager. Of course, there's a Clear All button, too.Networks, calls and connectivity
Xiaomi Redmi Note 4X is equipped with a hybrid, dual-SIM tray with a micro-SIM slot and a nano-SIM/microSD card slot. If used with two SIM cards, they will work in a dual standby mode. When one card is registered in a 4G network, the other one will work in 3G networks only. The onboard chipset has an integrated X9 LTE modem, which supports LTE Cat. 7 downlink speeds and Cat. 13 uplink speeds. Due to its capabilities, the device supports 2G GSM (850, 900, 1800, and 1900 MHz), 2.5G CDMA 800 MHz, 3G W-CDMA (850, 900, 1900, and 2100 MHz), 3G TD-SCDMA (1880-1920 and 2010-2025 MHz), 4G LTE-FDD (850, 1800, 2100, 2600 MHz), and 4G LTE-TDD (1900, 2300, 2500, and 2600 MHz) bands. Call quality has been excellent at all times and places. The speaker does a great job during calls, too. The 4X also supports dual-band Wi-Fi 802.11 a/b/g/n, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Bluetooth 4.2. All these connectivity options are fully functional so are the infrared and micro-USB 2.0 ports. The latter provides OTG support. The model works with the three main satellite positioning systems - GPS, GLONASS, and BeiDou. During our test time, it managed to detect quickly lots of satellites from all three with an excellent accuracy of up to 3 meters.Performance
Hardware-wise, Redmi Note 4X is based on the 64-bit Qualcomm Snapdragon 625 MSM8953 chipset. Based on the 14nm manufacturing process, this system-on-chip includes eight Cortex-A53 CPU cores clocked at 2GHz and a 650MHz Adreno 506 GPU. Another smartphone reviewed by us that has the same chipset is the Asus ZenFone 3 ZE552KL. The Redmi Note 4X scores 62345 points in AnTuTu, which is very close to the result of the ZenFone 3 - 62586 points. Both smartphones are almost on par on all other tests we have run. For example, in Rightware's Basemark OS II, which measures the overall performance, the 4X yields to the ZenFone 3 marginally. At the same time in the Basemark X test, which is focused on evaluating gaming and graphics performance, it is vice versa - the 4X scores better. Geekbench 4 results of both devices are very close, so are the Vellamo ones. However, in the latter, which checks scrolling and zooming, 3D graphics, video performance, and memory read/write, peak bandwidth performance and many other parameters, the 4X is only slightly outperformed in the Browser and Metal part, but scores better in the Multicore sub-tests.Cameras
The MIUI 8 Camera app offers no surprise. The home screen contains flash and HDR options in the top left and right corner, respectively, a shortcut to the filters, modes and camera switch located above the shutter button, a video recording button and a shortcut to the list of photos and videos. There are nine shooting modes - panorama, timer, audio, manual, straighten, beautify, HHT, scene, and tilt-shift. The manual mode allows you to adjust manually only the white balance and ISO. The video modes include time-lapse and slow-motion. The camera settings include the usual picture and video quality, exposure, contrast, sharpness, and saturation settings, etc.Primary camera
Xiaomi Redmi Note 4X features a 13-megapixel primary camera. It is typical for the manufacturer to use two different sensors for one and the same model and this one is no exception. Our review unit arrived with a Samsung S5K3L8 ISOCELL sensor for its rear camera, but there are units that are equipped with a Sony IMX258 sensor. We've made a short research on the topic and, currently, there is no officially confirmed information why this happens and how to determine whether your device has one or another prior to purchasing it. The S5K3L8 sensor is based on a 1.12 micron-pixel architecture and has a 1/3.06" size. It makes photos with a resolution of 4160 x 3120 pixels and we must say they are not bad at all for this type of sensor. In this smartphone, it is coupled with phase-detection AF and a 5-element lens with an f/2.0 aperture. By default, the camera is capable of recording FHD videos at 30 fps and HD videos at 120 fps. However, the chipset does support 4K recording, so with a third-party app (in this case Open Camera app), it is possible to shoot 4K videos with the Redmi Note 4X. Below the photos we publish a 1080p video and a 4K one, so you can compare both. The same image sensor is used in the Xiaomi Redmi Note 4 16GB and the UMi Plus.Secondary camera
For the front-facing camera of Redmi Note 4X, Xiaomi has opted for a 5-megapixel Samsung S5K5E8 BSI sensor. It has a 1/5" size and is based on a 1.12 micron-pixel architecture. It is coupled with an 85° wide-angle lens with an f/2.0 aperture and makes photos with a resolution of 2592 x 1944 pixels. The camera is also capable of shooting HD videos at 30 fps. Other smartphones that we have reviewed and use the same sensor for their selfie cameras are the Xiaomi Redmi Note 4 16GB, Xiaomi Redmi Pro, Vernee Apollo Lite, and Meizu m3 Note.Audio
The Music app in MIUI 8.2 does look a bit different than the one in 8.1 but offers the same functionality. When started, it opens the main music hub, containing content in Chinese as it is part of Mi's media ecosystem. When you access the My music tab, you actually access the music available on the device. It is grouped in four folders and is complemented by musical suggestions along with a collapsed form of the player itself. There are additional tabs that group the audio files according to their names, the name of the album, artist, etc. Tapping on the minimized player expands it to full screen with options for opening the Headphones & audio effects settings, which include headphones remote buttons, assign buttons, equalizer, Mi Sound Enhancer.Test | Value | RMAA rating |
---|---|---|
Frequency response (from 40 Hz to 15 kHz), dB | -0.08, -0.22 | Excellent |
Noise level, dB (A) | -96.9 | Excellent |
Dynamic range, dB (A) | 90.6 | Very good |
THD, % | 0.0039 | Very good |
THD + Noise, dB (A) | -82.3 | Good |
IMD + Noise, % | 0.0094 | Very good |
Stereo crosstalk, dB | -80.7 | Very good |
IMD at 10 kHz, % | 0.014 | Very good |
General performance | Very good |
Battery
MIUI 8 has an integrated Security app, which contains a Battery & performance section. It lets you analyze the accumulator, solve any issues found on it, and suggests improvements. There's a Battery Saver feature with an option to schedule it between modes. The Battery Usage part lets you monitor the apps and hardware that consume the most power and act accordingly. You can also check out the history of battery usage. The App Battery Saver allows you to choose individually, which apps should be saved from background killing in order to save battery life. The Settings cog opens further options, including power saver toggles, heating, and battery drain notifications, schedule power on & off, battery indicator style. The Battery & performance menu from the Settings contains shortcuts to the app's features along with Manage app's battery usage options, power saving modes, and system animations options.Final thoughts
Xiaomi Redmi Note 4X provides a very good display and impressive battery life. The latter is achieved not only through optimized software but also due to the power-efficient chipset. The SoC itself is not the most powerful mid-range one around, but it does its job excellently and is perfect for browsing, watching videos and general gaming. The audio quality is quite good and the cameras do a good job for a device that costs around $150-180. In this price class, the 4X is a worthy rival for the top places among its competitors.Последни ревюта
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