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As we know, a couple of days ago it was officially released Xiaomi Mi MIX 4. After 3 years of research and development, Xiaomi's first smartphone with an under-screen camera has finally been put into mass production.
Xiaomi Mi MIX 4 stripped: released the video teardown
Well, today the Chinese blogger Geekbar Zhang You have released a video of the teardown of the internal structure of the Mi MIX 4, showing the various components and secrets of this smartphone in the most detailed way possible.
Obviously we start with the outside, here the Xiaomi Mi MIX4 uses a lightweight Unibody ceramic body. While to get a good signal, there is a very thin metal frame between the screen and the ceramic in which we find the antenna, precisely because the rear shell is very enveloping, this is really difficult to see with the naked eye.
In any case, the first step in the teardown is to turn off the device and take out the SIM card tray, heat it with a hot air gun to a temperature of 90 degrees Celsius, and gently lift the back with the disassembly accessory. It should be noted that when separating the rear case and the screen / motherboard, you need to be careful with the USB-C cable at the bottom to avoid detaching it.
Now that we're inside, the blogger points out that the motherboard adopts a three-stage structure. The upper part mainly includes the SoC, the CMOS camera, flash memory, UWB antenna, etc., in the central part we see instead the wireless charging coil which also works as an NFC antenna, the double cell battery and in the lower part there are instead the built-in speaker, the linear vibration motor, the USB port and other unspecified miscellaneous modules.
In terms of heat dissipation materials, a large amount of heat dissipation film, copper foil, and thermal grease are applied to the chip part. Lou Bin measured that during a half-hour game of King of Glory, the entire metal frame has an average temperature of 36 degrees Celsius. While with the “Peace Elite” game, after half an hour of gaming the average temperature is 39 degrees Celsius.
As for the selection of the internal components of the device, the Xiaomi Mi MIX 4 adopts LPDDR5 RAM memory produced by Samsung, therefore high quality as well as high performance. Then we have the internal memory from SK Hynix, the 4500mAh battery produced by Dongguan New Energy, while the speakers and various microphones were produced by the famous company AAC Technologies.
Going to the camera under the screen, under strong light you can see two obvious light transmission holes at the top. The circle is the front camera and the square is the distance / ambient light sensor. It is noted that the former has a higher light transmission.
We quickly recall that the front camera has a resolution of 20MP and is aided by several algorithms to improve image quality. On the back we find instead three cameras in total with the 108MP main camera with Samsung HMX sensor, a 1 / 1,33-inch CMOS and OIS Anti-shake optics for always-in-focus images. Then there is a 12-megapixel ultra wide-angle, which equates to a focal length of 12mm and an ultra-wide field of view. Finally, we find an 8-megapixel periscope lens that supports 5x optical zoom, supports OIS optical image stabilization and is equivalent to a focal length of 120mm.
Furthermore, although the brand has advertised that the Xiaomi Mi MIX 4 supports 50 watts of charging per second, the actual measurement can reach 100 watts with the wireless charging base with built-in fan. This allows you to fully charge your smartphone in just 36 minutes. While with the 120W fast charging via cable, the Mi MIX 4 can be recharged from scratch in just 20 minutes.
It is reported that Xiaomi MIX4 will be priced at 4.999 yuan and will be officially sold for the first time at 10am on August 16.