On the evening of August 10, in Lei Jun’s annual speech, the much-anticipated Mi MIX 4 mobile phone was officially released.
This is the new work of the MIX series after 3 years. It brings an amazing CUP full screen. The under-screen camera technology solves problems such as bangs and digging holes.
There are also new technologies such as lightweight integrated precision ceramics, UWB one-finger connection, 120W wired fast charging, and the price starts at CNY4,999.
The MIX series was originally a concept phone product launched by Xiaomi 5 years ago. It features advanced designs such as full-screen and ceramic body. It is Xiaomi’s pioneer in trying new crafts and new technologies.
This time, the MIX 4 full-screen design took three years, more than 500 million yuan was invested in research and development, and more than 60 patents were accumulated before it was finally successful.
The first micro-diamond arrangement CUP full screen MIX 4 makes the front lens completely disappear
All previous full-screen designs could not bypass the front camera. Over the past year, under-screen camera CUP technology has emerged. In theory, this is the most perfect full-screen solution.
But hiding the camera without affecting the Selfie and the screen display is a difficult problem.
In terms of CPU technology, Xiaomi has developed three generations of technology in the past three years, and the third-generation CPU screen camera technology used in MIX 4 has a relatively perfect visual effect.
Xiaomi pioneered the micro-diamond arrangement. While ensuring the number of pixels and the RGB ratio remain unchanged, the sub-pixel area is reduced, light occlusion is reduced, and 100% full-pixel display is achieved. The density of 400PPI can no longer see the traces of the camera.
In addition, Xiaomi has further improved the CUP display effect through unique circuit design, transparent leads and other technologies. Finally, on the MIX 4, the CUP display area is only 0.2 ordinary centimeters, which only accounts for 0.2% of the entire screen area, and the display effect is more perfect.
Although the price is high, the cost of a CUP is equivalent to the screen cost of a regular flagship mobile phone.
For selfies, MIX 4 is equipped with a 20-megapixel front lens that supports the synthesis of 1.6um large pixels. At the same time, it uses Xiaomi’s self-developed CUP full-screen optimization algorithm.
The problem of yellowish and dark under-screen cameras and dim pictures has been improved. The definition has been greatly improved, and the picture quality is not much different from that of conventional mobile phones.
In addition to the CUP under-screen camera technology, MIX 4 also brings a better ceramic body this time. Although the previous ceramic body looks good, the weight is a problem.
This time, MIX 4 is the first to launch lightweight integrated precision ceramics, which not only maintains a warm and moist feel, but also reduces the weight of the ceramic by 30%. The thickness of the whole machine is 8.02mm and the weight is 225 grams.
In terms of color matching, in addition to the traditional ceramic black and ceramic white colors, MIX 4 also brings a new shade of blue and gray color, inspired by the northern Song Dynasty’s shade celadon.
The turquoise and light blue tones are elegant and magnificent, without losing the technological atmosphere.
In addition to the full screen and ceramic body, the new technology brought by Xiaomi MIX 4 this time is UWB. The full name of this technology is Ultra Wide Band, which is ultra-wideband communication.
With 500MHz bandwidth to transmit data, it is a high-precision positioning and measurement technology with broad application prospects.
Xiaomi demonstrated UWB technology last year, which can give mobile phones and smart devices spatial perception capabilities, just like “indoor GPS.”
Point the mobile phone to the smart device, and the control card will automatically pop up and you can directly control it. This innovative way of pointing interaction is unprecedented.
With UWB technology, Mi MIX 4 can be intelligently interconnected with other devices that support UWB technology, as long as you point to a device, it will automatically connect, such as smart TVs, smart homes, and so on.
In terms of hardware, Xiaomi MIX 4 has no suspense. It is equipped with Snapdragon 888 Plus, the CPU core frequency is increased to 3.0GHz, and the AI performance is increased by 20%.
With LPDDR5 6400Mbps memory and UFS 3.1 flash memory, the performance configuration is already very powerful.
For heat dissipation, Xiaomi Mi MIX 4 also launched the 3D graphene soaking plate technology this time, which has a higher thermal conductivity and an area of up to 1206mm2, which can cover the main heating area on the processor and the motherboard and quickly dissipate heat.
In addition, the performance mode of Mi MIX 4 has also added a new balance mode. Although the performance will be limited in this mode, it can still guarantee the daily use experience.
And the temperature is lower. In WeChat, video, navigation, news and other scenes, the temperature is around 33 degrees, which is 3-5 degrees lower than other Snapdragon 888 phones, and the control is very good.
Battery fast charging is also a highlight of MIX 4. This time it is still the industry’s strongest wired and wireless fast charging combination.
Wired supports 120W, wireless supports 50W, 10 minutes to charge 80% of the power, 21 minutes to fully charge.
The battery has a capacity of 4500mAh and uses a double-string MTW graphene anode lithium electronic cell. The conductivity of this new material is 1000 times that of the traditional carbon black anode, the charging speed is fast, and the temperature is lower.
In terms of taking pictures, Xiaomi Mi MIX 4 is also equipped with a luxurious 100 million pixel triple camera. The main camera is a Samsung HMX sensor with a super large size of 1/1.33 inch CMOS and 100 million pixels.
Support 1.6um large pixel synthesis and OIS optical image stabilization, the picture quality is extremely clear, and the crop is not afraid.
The ultra-wide-angle is a 12-megapixel sensor, which is equivalent to a 12mm focal length and an ultra-wide field of view. It also uses a free-form surface lens for the first time, which can solve the problem of ultra-wide distortion without an algorithm.
Realize hardware-level distortion, and can also shoot at the same time as the main camera + super wide, and synthesize a high-definition picture quality large image.
In terms of telephoto, Mi MIX 4 is equipped with an 8-megapixel periscope lens, supports 5x optical zoom, supports OIS optical image stabilization, and is equivalent to 120mm focal length.
In terms of price, Mi MIX 4 8+128GB starts at CNY4999, 8+256GB is priced at CNY5299, 12+256GB is priced at CNY5799, and 12+512GB is priced at CNY6299.
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Mike Lee-111 
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