The answer is here, but you just can’t fight physics. Light needs to come through a lens and hit a sensor. There has to be some significant distance, in relation to the thickness of the phone for this to work. Until camera technology advances and somehow produces a comparatively sharp image, we will be stuck with the bump. It’ll happen at some point I’m sure, but there is a whole bunch of tech that will need to change to get there.

Feel Good Inc. - Gorillaz https://youtu.be/HyHNuVaZJ-k?si=zdhqSgmxOTNKBR9E