Three years after the release of the Mi Mix 3, Xiaomi looks set to deliver the next device in the series—the Mi Mix 4. Unofficial renders of the phone have surfaced, painting an image of a device with potentially the slimmest, cleanest display design yet, in part thanks to an under-display selfie camera.

https://www.notebookcheck.net/New-renders-show-the-upcoming-Xiaomi-Mi-Mix-4-pushing-the-boundaries-of-the-bezel-less-design-thanks-to-an-under-display-selfie-camera.531577.0.html