Huawei's rumored inaugural clamshell foldable smartphone is now said to have 2 large dark circles on its rear panel, as do many newer devices from the OEM. However, one will not be for cameras: instead, it will house an auxiliary screen that may function to do this such as show the time when the phone is closed.
https://www.notebookcheck.net/Huawei-s-first-gen-clamshell-foldable-phone-will-debut-with-a-round-secondary-display.583667.0.html