Google filed a patent application with the World Intellectual Property Organization (WIPO) last September for a smartphone (presumably a Pixel) with an under-screen selfie camera. The ZTE Axon 20 is already available with such a feature and other manufacturers including Samsung, Xiaomi and Oppo could launch handsets this year using an under-screen selfie camera.
Pixel 7 concept
When the camera is off and not being used, the content on the second screen is reflected onto the main display thanks to the prism. Once the camera is turned on, the prism rotates allowing incoming light to reach the camera allowing the user to take high-quality photographs and videos. The small auxiliary display contains an ambient sensor, a proximity sensor and / or an IR sensor with the latter able to support 3D face recognition.
Google files patent for an under-display selfie camera