One of the most innovative phones of the year comes from ZTE. The Axon 20 is the first smartphone with an under-display camera that does without a notch or pop-up mechanism. Whether the camera module below the OLED panel in the Axon 20 is convincing can be found out in the review of the ZTE smartphone.
https://www.notebookcheck.net/ZTE-Axon-20-Review-How-good-is-the-first-under-display-camera-in-a-smartphone.512868.0.html