Hello all my iPhone 6 plus screen brightness suddenly goes up when it's dark, this happened twice already, has anyone experienced this?
Auto Brightness enabled maybe?
Update just happened again after fresh restore, what could it be???
Are you using any screen protector/case/bumper?
If not, did you use one before?
Did you go to settings > brightness and saw there that the brightness is really going up in a dark environment?
Did you try cleaning your screen, especially above the receiver?