The Mi MIX series always has a strong sense of the future, and the reason is definitely not limited to the screen, because the Mi MIX series will always bring no small surprises in other aspects. This time the Xiaomi Mi MIX 4 is no exception. The first is the return of the ceramic back cover. After experiencing AG glass, you will understand that the warm touch of ceramics is incomparable.
In addition, the core processor has also been upgraded to Snapdragon 888 Plus . Compared with the Snapdragon 888, it not only has improved the craftsmanship, but the main frequency of the super-large core has also been further increased. This means that under the premise of consistent performance, the heating is smaller; and under the premise of consistent heating, it will have better single-core performance.
In terms of charging, Mi MIX 4 is the king of wired/wireless dual materials. Wired charging supports up to 120W, and wireless charging also has a faster speed mode than the standard 50W . Whether you like a faster and more stable wired or a more free wireless, Mi MIX 4 can bring you a super-speed experience that is fully charged in ten minutes.
Design
The packaging box of Xiaomi Mi MIX 4 is not “environmentally friendly” at all. It is much larger than ordinary mobile phone cases, and the content is also very rich, ranging from protective cases to chargers. The style of the packaging box is also classic MIX style. The middle of the black packaging is the word MIX. This generation uses a bronzing font, which looks more advanced. In addition, the brand new Xiaomi LOGO is also presented on the packaging box.
Open the package and take out the phone. This generation of Mi MIX 4 uses the design of the fingerprint under the screen to hide the proactive. The entire screen looks like one, with an excellent screen-to-body ratio.
Because of the special design of the proactive area under the screen, it has a natural higher light transmittance. , So that under strong light, you can vaguely see the proactive module under the screen. In addition, unlike the square-shaped under-screen area solution previously seen, the under-screen proactive module of Mi MIX 4 is also closer to the original “punch” style.
At the top of the screen, you can also see the earpiece with a micro-slit design, which supports external sound and can provide a certain dual-speaker stereo effect. The edge of the screen is also the latest micro-curved design, which can ensure the feel of the frame and increase the overall screen-to-body ratio while solving the problem of the previous parallax degradation of the curved screen edge.
The back camera design of the Mi MIX 4 is similar to the family design of this year’s Mi 11 series and also uses a rectangular camera module, plus decorative elements of left and right color separation. In addition, the back cover adopts lightweight integrated precision ceramics. Simply put, without increasing the weight too much, users of Xiaomi MIX 4 can enjoy the warm and moist feel of ceramics
The rear camera module, the main camera with 100 Megapixels, the sensor is the old face we are familiar with-HMX. In addition, there is an 8 Megapixel 5x telephoto lens and a 13 Megapixel freeform wide-angle lens.
The interface is also a familiar configuration, with a microphone opening on the upper and lower sides, a Type-C interface on the bottom, an infrared module on the top, and dual speakers certified by Harman Kardon (the top earpiece sounds) to form a stereo. The SIM card slot is also at the bottom, with double-sided dual card design, and waterproof rubber at the bottom to improve airtightness.
The 120W charger that comes with the package is not small. The Xiaomi Mi MIX 4 can charge up to 120W for wired charging, and the wireless charging standard is 50W, but there is also a faster speed mode, which is the top speed in the current fast charging of mobile phones.
Appearance
The recently released under-screen proactive phones all adopt a new generation of under-screen proactive solutions with better display effects. Their most prominent feature is that the under-screen proactive area only changes the shape and arrangement of pixels, but the overall pixel density (PPI) will not be greatly reduced, so the grating effect can be greatly reduced, and there will be no obvious defects even in pure colors during daily use.
Among the currently announced three under-screen proactive solutions, the “micro-diamond arrangement” adopted by the Xiaomi Mi MIX 4 is the one with the most delicate display effect.
As we all know, the OLED screen will cause a certain degree of resolution loss due to the difference in pixel arrangement (compared to the native LCD), and because of the technical limitations of the under-screen proactive screen, the current resolution can only be 1080P. Compared with the worst D row, the resolution equivalent is only 0.67, and the equivalent value of 0.8 under the micro-drill arrangement will undoubtedly provide the finest picture performance.
In addition, in the proactive area under the screen, the Mi MIX 4 also uses the same micro-diamond arrangement, but the red pixels are further changed into circles, and the overall pixel size is further reduced.
The pixel density of the micro-diamond arrangement is the highest, and of course the same is true for the area under the screen. From the actual display effect, the advantages of micro-drill arrangement in fineness are fully demonstrated. When displaying fonts, the deterioration of the fonts under the micro-drill arrangement is actually not obvious. It is far less than the previous test of the “D layout”, the edges appear severely jagged, and the overall appearance of the mosaic is appreciated.
In addition, because of the high pixel density, when the micro-drills are arranged under strong light, the “black blocks” in the area under the screen are also the least obvious. Even if the strong light is irradiated, they are only faintly displayed.
The fundamental reason is that the screen pixel density is high, so the light transmittance of this area is lower, so compared to the D row, the display effect is more perfect without more obvious flaws.
But this also leads to a problem. The photo effect of the front camera under the screen is closely related to the light transmittance. Therefore, although the Xiaomi Mi MIX 4 is the best display proactive solution under the screen, its self-portrait effect may appear slightly worse. , The self-portrait effect of Mi MIX 4 is slightly less transparent in the picture.
However, comparing the self-portrait effects between the under-screen schemes is just a matter of picking the generals among the dwarfs . Everyone has sacrificed the proactive selfie for the perfect full screen, and they are all in the “barely enough” basic function pass. The micro-diamond arrangement of Mi MIX 4 happens to be the best solution for those who don’t care about selfies at all, but are looking for perfect display effects.
Performance
On Xiaomi MIX 4, the Snapdragon 888 Plus was launched. Compared with its predecessors, its improvement is mainly due to two points. The frequency of the super large core has been increased to 3.0GHz. In addition, the AI performance has also been greatly improved, and the computing power has soared to 32TOPS, an increase of up to 20%.
Since the MIUI version of the Xiaomi Mi MIX 4 shipped from the factory provides three modes of performance, balance, and power saving, the tests are all carried out in the performance mode.
1. Master Lu
Master Lu’s running score was as high as 892,426 points, surpassing 99% of other users, ranking No. 4, which shows that the performance of Snapdragon 888 Plus is still quite impressive. With the performance advantage of the super-large core, the Mi MIX 4 can easily be compared with a lot of game flagships with piles of material to dissipate heat.
2. Antutu
AnTuTu scored 819,261, which exceeded 98% of users, and its performance was at the top level.
3. AndroBench
Mi MIX 4 is equipped with UFS 3.1 flash memory, with a continuous read speed of 1724.1MB/s and a continuous write speed of 741.62 MB/s.
4. GeekBench
GeekBench tests CPU performance, we mainly take GeekBench5 as the standard. Snapdragon 888 Plus has a single-core performance of 1125 points and a multi-core performance of 3405 points.
For reference, Xiaomi Mi 11 Pro has a single-core performance of 1010 and a multi-core performance of 3132 at room temperature. Simply put, the performance increase in the daily environment is about 10%.
5. GFXbench
The GPU part of the Snapdragon 888 Plus does not have any enhancements. You can compare the heat dissipation of different models according to the GPU running points.
Overall, the GFXbench score of Mi MIX 4 is even higher than Mi 11 Pro by about 4%. It can be seen that the heat dissipation design of Mi MIX 4 is probably better than Mi 11 Pro.
In terms of games, we selected four games for testing. The screen settings are all with the highest picture quality at the highest frame rate. The actual game frame rate is shown in the figure.
Basically, all games performed very well. Although the frame rate of Yuanshen is only 40 FPS, the main reason for this is that the game is framed. In this case, the core heat level is low, only 45°C.
In general, the enhancement of the Snapdragon 880 Plus is limited. Although the super-large core frequency has been enhanced and AI performance has been improved, its overall performance is still not much different from the familiar Snapdragon 888.
For Xiaomi devices, after the performance mode and balance mode are switched on, the most important thing is to turn on the balance mode daily to ensure a calm and not stuck experience, otherwise the heat of 888 will be really difficult to deal with in the summer.
Cameras
In terms of taking pictures, Mi MIX 4 is equipped with a 100-megapixel main camera, and the sensor is also a multi-generation HMX tuned by Mi, which can bring a stable imaging experience. In addition, the 12-megapixel free-form wide-angle lens and 5x telephoto can also unlock more viewing angles for taking pictures.
The main camera is the familiar HMX. Since Xiaomi Mi CC9 Pro, this CMOS has been optimized for nearly two years, and the imaging has been very stable.
Its biggest feature is its extremely high resolution. It can clearly record the details of distant buildings and green plants when taking pictures in the daytime when the light is good. Even after cropping, it is a pretty good photo.
Taking pictures at night, HMX’s imaging style is more high-contrast, focusing on highlighting the texture of night lights and the atmosphere at night. As long as there are bright lights in the picture, the polar night algorithm will not be triggered, and the brightness can be increased violently, which can greatly highlight the tranquility of the night.
Xiaomi Mi MIX 4 is also equipped with a telephoto lens that supports 5x lossless telephoto optical change, allowing users to clearly shoot farther scenery.
For ordinary users, compared to the 24-27 equivalent focal length of the main camera, which requires repeated movement to compose the picture, the telephoto is the easiest focal length to shoot. Especially at 5 times the equivalent focal length of 90mm, close-up effects can be taken for many scenes, which can easily make your phone emit camera-like photos. Therefore, if you are more concerned about the mobile phone’s imaging system, then the telephoto is essential.
The wide-angle end of the Mi MIX 4 uses a free-form lens, which can greatly reduce the edge distortion under the wide-angle and improve the image quality of the corners. When actually taking pictures, the wide-angle lens can accommodate more scenes, and the addition of the free-form surface lens greatly reduces the corner distortion, and also reduces the cropping of the picture when correcting the distortion in the later stage, which improves the utilization of the original material in disguise.
Battery 
And not only fast, it also provides many customization options for charging. For example, you can choose whether to turn on fast charging and acceleration. After turning on, the charging speed will be maximized, but the temperature will not be controlled; and after turning off, constant temperature fast charging will be performed, which can ensure that the temperature of the back case of the phone does not exceed 37°C. Provides the charging speed closest to 120W fast charging.
Using the 120W wired fast charge for charging test, the power of Xiaomi MIX 4 from 4% to 100% only takes 19 minutes. If the heat dissipation conditions are good, the charging speed will be faster. It only takes 10 minutes to charge 80% of the power .
The default power of wireless charging is 50W, and it takes 40 minutes to reach 100%. In the phone settings, there is also an option for fast charging. The wireless charging speed will be further improved after it is turned on. The total time is only about 24 minutes.
In terms of battery life, the software battery dog is used to test the battery life. Under the +120Hz refresh rate in the balanced mode, the Mi MIX 4 consumes 15% of power in one hour in a comprehensive use scenario of web browsing, video, and games.
From this estimate, its comprehensive battery life is about 6.7 hours. Adjusting the screen refresh rate to 60Hz or smart mode, lowering the screen brightness, can make it last longer.
Read Also: Xiaomi MI MIX 4 vs Samsung Galaxy S21 Ultra Camera Review
Verdict
Every time Mi MIX is released, there are many surprises, and this time Xiaomi Mi MIX 4 is no exception. It not only brings a perfect full screen under the screen with the best display effect, but also many bright spots. With wired/wireless dual-hundred-watt fast charging, the first Snapdragon 888 Plus, a ceramic back cover, a full-focus camera, etc., let alone a front camera phone at the same price, or even a traditional flagship at the same price, their configuration is also very good. Rarely will pile up materials like this.
The “micro-diamond arrangement” under-screen proactive solution first released by Mi MIX 4 can be said to be the most delicate under-screen proactive solution at the moment .
No blemishes can be seen in the proactive area under the screen, even when strong light is irradiated and text is displayed, it is only vaguely visible. The choice of the proactive solution under the screen is actually a trade-off between the picture quality of the selfie and the display effect, while the balance of the Mi MIX 4 is more biased towards the display effect. For those “straight men” who don’t like taking selfies at all, the full screen of Mi MIX 4 almost exactly matches their ideal full screen.
Xiaomi Mi MIX 4 debuted the Snapdragon 888 Plus, and its performance has indeed improved, but compared to this improved running score, I am more concerned about the balance mode provided by the new version of MIUI equipped with Mi MIX 4. In the traditional performance mode, using Snapdragon 888 in summer is indispensable for daily hot hands, and there is even the possibility of overheating alarm after running for a minute. After switching to the balanced mode, the fluency of the mobile phone did not drop, but the temperature actually dropped, which can be described as a great improvement for the daily experience .
Xiaomi Mi MIX 4 is also equipped with a set of rear camera modules with all focal lengths. From the ultra-wide angle of the free-form lens, to the 100 million main camera, to the 5x telephoto. Mi MIX 4 can provide you with the ability to photograph at all focal lengths, whether it is a large viewing angle that accommodates everything, or close-ups with clear details that are several meters away, you can take pictures. Placed a year ago, this configuration is called the flagship image. Not too much.
Xiaomi Mi MIX 4 also has the most luxurious fast charge. To be precise, it is a wired super fast charge of up to 120W and a standard 50W wireless super fast charge. No matter which charging method you prefer, Mi MIX 4 can let you have the fastest charging speed, and the 4500mAh battery is not small.
Although the fast charging power is easily affected by the temperature image, for example, 120W can be charged to 80% in only 10 minutes in theory, but it is only about 60% in practice. However, even the speed after the high temperature drops, the Xiaomi MIX 4 can also guarantee Fully filled within 20 minutes, still ahead of most other products on the market .
If you are an old fan who has been waiting for the MIX series to update, then please rest assured that the Xiaomi Mi MIX 4 is definitely a qualified MIX orthodox sequel. It still adheres to the MIX series’ pursuit of the most cutting-edge technology, the best under-screen front camera, Snapdragon 888 PLus, full focal range rear camera, dual-height fast charging, and the persistence of the ceramic back cover, regardless of art There is no compromise between the sense of technology and the sense of technology .
Five years ago, Xiaomi MIX first taught people what a full screen is, and five years later, the king of Xiaomi MI MIX 4 returns, and it is still the strongest full screen king.
Do not forget to follow us on our Facebook group and page to keep you always aware of the latest advances, News, Updates, review, and giveaway on smartphones, tablets, gadgets, and more from the technology world of the future.