Chosen Solution
I recently changed the screen on a Xiaomi Mi A2 Lite. When I start the phone up, the Android One logo displays with full brightness and colour without any issues. The problem is that once the phone turns on there is no backlight. You can still see the display if you are in a dark room and everything seems to show correctly. I have tried updating and factory resetting but still having the same problem. Any advice would be much appreciated.
I’d try to disable the “adaptive brightness” feature under settings->display, but I highly doubt that this can solve an issue like this. On the software side there should be restrictions in place to how dim the screen can get and I’ve never even heard of the software having the permission to turn the backlight off. The only suggestion then would be to replace the screen, but since the backlight is working upon boot…
