Design
Xiaomi Redmi Note 4 owns a solid metal casing, which is highly durable. The device is equipped with power button and volume down/up button on the right, 3.5mm headphone jack on the top, microUSB port and speaker on the bottom. On the left side, Xiaomi equips the Redmi Note 4 with SIM card slots and a memory card with the ability to hold two SIMs at the same time, or one SIM card and one memory card at the same time.
In particular, this product is equipped with sensors sensitive fingerprints on the back to unlock the device. And compared to many competitors in the same segment, the infrared port to turn the Redmi Note 4 into remote TV, air conditioner, washing machine, ….
However, when using the Redmi Note 4, users must pay close attention and should use the case, because the powder coating on the back quite easy scratched to reveal white streaks.
Display
Xiaomi Redmi Note 4 comes with a 5.5-inch Full HD display, more or less that familiar size, but the key is the resolution of 1920 x 1080 pixels. In practice this gives about 401 ppi, so text and details look sharp, and visuals stay pretty clear. It uses IPS LCD tech, which tends to help with color reproduction and also gives wider view angles, so you can watch or scroll without it going dull fast
Display Quality
With that Full HD panel you get vibrant colors, decent brightness, and contrast ratios that feel balanced. It works well for lots of everyday media stuff, like video watching , gaming too , and regular web browsing. Brightness is usually enough for comfortable use indoors and in normal daylight, however if you are in strong direct sun, viewing can become a bit tricky, like the screen loses some legibility
Color Accuracy and Viewing Angles
The IPS LCD design supports accurate color reproduction , and the consistency stays solid from different angles. Colors look bright, lively, and they keep their tone even if you don’t look straight at the screen. Clarity remains good , and readability holds up for general use, giving a kind of immersive feel when you are consuming content, movies, clips , or whatever is on your mind.
Screen Protection
The Redmi Note 4 comes with Corning Gorilla Glass protection, which helps defend against little scratches and minor bumps . Still, even if it’s decent, users are often recommended to add a screen protector too, for extra toughness and to avoid any possible problems later on.
Performance
Xiao Redmi Note 4 is powered by a quad-core 64-bit Qualcomm Snapdragon 625 processor clocked at 2.0GHz, along with an Adreno 506 graphics chip, plus 3GB RAM and 32GB internal storage. This setup is pretty strong if you compare it to many popular phone lines, so it can handle everyday office related stuff without much fuss, like web surfing, Facebook, music listening, checking emails, and so on . It also manages heavier titles like Asphalt 8 , or today’s more action shooter games, quite smoothly in general.
With the latest version of the AnTuTu Benchmark, Redmi Note 4 scores more than 61,300 points – impressive compared to many other smartphones priced at less than $ 220. If you need smartphone under $ 220 while high performance, Redmi Note 4 is a very worthwhile option.
On the battery life, with 4,100mAh battery life, this is one of the “smartphone” battery that is usually only seen on Gionee or Philips smartphones. This battery ensures the device operates continuously from morning to night at high intensity, Full HD 10 hours continuous video recording, and up to 20 hours of standby time.
Camera
Redmi Note 4 is equipped with 13MP main camera and 5MP secondary camera. The main camera also comes with a dual-color LED flash, autofocus, touch focus, face detection, HDR backlight, Panorama, and Full HD movie recording with 30 frames. Pictures per second. Front camera is no less than when you can shoot Full HD movies and take selfie photos with beauty mode.
In terms of quality, the rear camera is only medium-sized with relatively light tones and lack of sharpness. On the contrary, the front-facing camera is very effective when shooting selfie images, which is capable of smoothing natural facial skin without the need for ancillary applications such as 360 ° Camera.
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Monitor and interface
The handset is equipped with a 5.5-inch Full HD screen with IPS range and high quality glass. This screen displays very smooth, sharp images and a wide range of bright and dark adjustments for good use in the sun and also for better health at night.
Although there are beautiful interface with various options from the theme store, but Android 6.0 on Redmi Note 4 is quite limited. Among them is the ability to manually adjust screen brightness is not standard, the settings are somewhat unreasonable settings and make it difficult to delete the default Google applications.
Battery Life
4100mAh Battery
One of the more noticeable things on the Xiaomi Redmi Note 4 is, basically the large 4100mAh battery, it brings pretty good staying power for a mid-range phone. With that big capacity the device can, more or less, get you through a full day even with intense use like web browsing, social media, and lots of video or music.
Battery Performance
In real life, the battery on the Redmi Note 4 is honestly pretty strong, like it still manages to hold up well. Most people can get through a whole day even with fairly moderate to heavy daily routines, and if you go lighter it feels even better , it almost stretches past what you would expect. That extra capacity also gives a little more room to move for power users who do more demanding stuff, like long sessions, or having constant apps running in the background.
Battery Saving Features
There are also a few battery-friendly options included to help prolong usage. For example, there’s a power-saving mode, it cuts down background activity, dials down screen brightness and it also caps performance in order to conserve energy. You can turn these options on when you’re dealing with heavy usage or when a charger is not around , so the phone holds on a bit more.
Charging Speed
The Redmi Note 4 does not really support fast charging,still it manages to charge in a pretty efficient way considering the battery size. When you get the phone, you also get a normal 5V/2A charger, and that setup usually gives fairly decent charging speeds. Most users should be able to reach a full charge within a few hours, although, honestly, it would be nicer if it supported a quicker “top-up” style charging for those moments when time is tight.
Software Experience
MIUI 8
When it first launched, the Xiaomi Redmi Note 4 was already going with MIUI 8, Xiaomi’s own interface layered on top of Android 6.0 Marshmallow. MIUI 8 isn’t just some skin, it also brings a bunch of features and personalization options, so the whole vibe feels a bit off compared to what you’d get on stock Android.
Customizations and Features
In MIUI 8 you get plenty of tweaks and extras, for example a home screen that can be customized, plus themes, and then a collection of additional utilities. You can swap themes, try different icon packs, and basically adjust the visual “vibe” of the interface to match what you like. On top of that, there are some practical tools too, like dual apps and a built-in file manager, which is one of those things you tend to use more than you expect.
Performance and Usability
MIUI 8 feels pretty smooth and responsive, so day-to-day use has very little lag or even that weird stutter, you know, the sort that shows up sometimes. The custom interface brings in a bunch of extra features and settings, which in turn makes the whole experience more usable, and kind of easier to live with. It’s not exactly as minimal as stock Android though, but honestly it’s feature-rich enough that a lot of people end up liking it a lot.
Software Updates
Xiaomi seems to keep a solid history with software updates. The Redmi Note 4 has gotten upgrades to newer MIUI versions, plus security patches, and also tweaks aimed at better performance. Still, with time, the device will age , and then update availability can slow down, so later on some users might land on older software builds, even if they don’t want to.
Advantage:
– Monolithic solid, sleek metal design.
– Strong configuration, high performance.
– Sensitive fingerprints.
– Camera beautiful selfie.
– Good price.
Disadvantages:
– The back surface is easy to scratch.
– The rear camera is just average.
– Not yet updated to Android 7.0, many features not yet handy.
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Tech Reviewer & Product Analyst
Định Bia has spent over 10 years testing consumer electronics with a focus on smart technology. He work as a product advisor at Biareview where he helped customers find the right devices for their needs. He personally tests every product featured on this site using a consistent evaluation framework covering quality, durability, and value. All reviews are based on experience, not influenced by the manufacturer.