Huawei has patented what could be its next-gen mobile-device form-factors. Not only do they have no discernible front-facing cameras, their side-buttons are replaced with what appear to be parts of a flexible display instead. These virtual keys have corresponding cut-outs in the device's frame.
https://www.notebookcheck.net/Future-Huawei-phones-could-have-under-display-selfie-cameras-and-no-physical-buttons.477242.0.html