The latest update for the Galaxy Note 9 makes it easier to switch between taking regular and wide-angle selfies. The firmware updates the device to the April Android security patch too and introduces an option to automatically schedule Night Mode. Frustratingly, not all devices will receive these features this month though.
https://www.notebookcheck.net/Easier-selfies-but-not-for-all-Samsung-brings-camera-improvements-to-some-Galaxy-Note-9-devices.419842.0.html