Disassembly video of Xiaomi Mi 9T shows off pop-up camera, in-display FP reader
Xiaomi posted an official teardown video of the Xiaomi Mi 9T (aka Redmi K20) showing what makes it tick. The pop-up selfie camera is driven up and down by a stepper motor, a design that should be familiar enough by now.
The rear camera has two modules the 48MP main cam and the telephoto cam come as a unit, the ultra wide-angle camera is on a separate module. The complicated-looking motherboard wraps around all that. It houses the Snapdragon 730 chipset and memory, plus the heat spreader.
The loudspeaker is on the bottom it features a large 0.9cc cavity for better sound. Towards the end of the video you can see the in-display fingerprint reader too, which kind of looks like another camera.
Here's another look at the positioning of the three rear cameras: