Huawei has reportedly filed patents for phones with reversible cameras. This design choice is found in a pre-existing Asus phone: the ZenFone 6 (or 6Z), which uses a flip-action module to deploy its dual cameras as both main and selfie shooters. Huawei's apparent competing IP has either 1 or 2 sensors in its own rotating component.
https://www.notebookcheck.net/Huawei-allegedly-patents-a-response-to-the-Asus-ZenFone-6.443209.0.html
Discusting, will never buy a Huawei in my life.