The Mi Mix 4 is now out in China! Comes with an in-display camera

Now, you will never know if the FBI is watching you.

So the rumours ARE true. The Mi Mix 4 unveiled today does have an in-display camera, which is the main highlight of the flagship. Xiaomi calls it CUP (Camera Under Panel). The front cam is a single dot notch with a 20mp resolution and 1.6µm pixel size

So how did Xiaomi manage to include their 1st-gen in-display camera? Based on the livestream and their Twitter, this is how they did it.

As mentioned before, Xiaomi calls this in-display camera “CUP” (Camera Under Panel). So what Xiaomi did was create a new type of display called “Micro-diamond pixels” that reduces pixel size but retains the same 400ppi density of the phone. In other words, it reduces pixel size without sacrificing the quality. The display has redesigned circuits that increases camera transparency and these pixels are then made transparent using a technique Xiaomi calls “Transparent subpixel circuits”. Previously, Oppo showed a sample picture for their 2nd-gen in-display camera tech. Xiaomi also used the same technique as Oppo did.

The camera itself has a high resolution of 20mp with a micron-pixel size of 1.6µm. Though in-display cameras are maturing, CEO Lei Jun added that people should still depend on the dot notches as it should provide better details and lighting as the technology is still being developed. Since Oppo released a sample picture (under good lighting) for their 2nd-gen, and the quality is actually pretty decent (though, not flagship quality yet). Xiaomi is confident that their in-display camera would provide similar results.

Other than the front camera, it’s just the usual flagship. It comes with a 3D-curved 6.67in. AMOLED screen with support for Dolby Vision and HDR10. For the sound, it uses the same Harman/Kardon stereo speakers found on the Mi 11 Ultra, which should go perfectly when watching movies or playing games, as it gives high-definition sound. The phone is also Hi-Res audio certified.

For the performance, the phone has its own cooling system and is powered by a flagship Snapdragon 888+ 5G processor. This one is basically the SD888 on steroids. Xiaomi did not announce a faster refresh rate though. To compensate that, Xiaomi provided multiple battery saving modes that should enhance your gameplay experience

Speaking of Battery, the Mi Mix 4, like the Mi 11 Ultra, supports both fast wireless and wired charging. The phone supports 120W wired fast charging with different battery clock speeds depending on the charging mode. The phone is powered by a 4500mAh battery. It charges in 21 minutes from empty to 100% without any special battery modes, and with boost mode enabled, it charges from empty to full in just 15 minutes. There is also a balanced mode that keeps your phone in check by optimizing your phone’s power consumption and controlling its temperature. By using this mode, the Mi Mix 4 can cool down for as low as 33°C, in contrast to other phones.

While the phone does not have a high refresh rate, it still is a good gaming performer due to a special cooling system made of graphene. The phone should be kept under tip-top temperatures even when used for longer periods of time.

The main purpose of the Mi Mix 4 is photography. And because it is a flagship, it comes with necessary cameras (no bullshit 2mp macro or depth cameras here, only the essentials). The phone has a 108mp Samsung HMX sensor with OIS for its main camera, a “free-form” ultrawide camera with a resolution of 13mp and 120° FOV and finally, an 8mp periscopic telephoto with 5x optical zoom and 50x digital zoom. This periscope camera also comes with OIS.

Below are some sample shots Xiaomi has taken with the Mi Mix 4

We don’t know what the actual quality is, though it is greatly expected to be on-par with the Mi 11 Ultra, or maybe better. It should have great photo and video quality and we can’t wait ’til DXOMark tests it.

The phone is built on a ceramic unibody in which Xiaomi claims to be 30% lighter compared to other materials. But this also means the phone is slippery so a case is almost a necessity. It comes in three colours: Black, White and Grey. One small and unannounced feature of the phone is the IR sensor, which means you can use the phone as a remote control, a tradition of Xiaomi since their inception. Some Xiaomi phones don’t have this, for example, the Mi 8 series excludes the IR Sensor, for some unknown reasons.

The phone isn’t out yet internationally, but here are the prices from the Chinese launch, directly converted to Philippine Peso


  • 8/128: CNY 4999 (~Php 38.9K)
  • 8/256: CNY 5299 (~Php 41.2K)
  • 12/256: CNY 5799 (~Php 45K)
  • 12/512: CNY 6299 (~Php 49K)

Because Xiaomi tweeted a translated version of the launch, we expect an international release, so stay tuned for pricing and updates.

Source: (Livestream ended)