Does anyone have trouble when receiving a call outdoors? My normal screen is fine and easy to see, but when I get a call, it is too dim to see who is calling.
I think it is always dim. Nothing seems to be covered, as a matter of fact, I just held my thumb aboove the sensor while inside, and the screen began to dim, so that seems correct.
That's pretty strange--hopefully someone with that phone can chime in here. In the meantime, see if it happens in Safe Mode, in case it's being caused by a 3rd party app: https://support.t-mobile.com/docs/DOC-11856. If that doesn't work, then try wiping the cache partition: https://support.t-mobile.com/docs/DOC-11663 (I think these steps will work on the Z5 Compact, but am not certain.)