Recently I purchased samsung galaxy A52s 5G and I am having this problem. Black doesn't go complete black sonetimes while on AOD and on any pure black background. In amoled screen it is supposed to turn off lights in black screen completely but it doesn't. Even if you turn off AOD doesn't help because during charging that Gray screen or powered on black pixel shows up and not complete black. What is happening here is like LCD screen where back light always on unless you turn off screen completely.
