[AC Question]

I didn't change any setting but for some reason the screen goes dark when I hit the call button and I don't know if it connects or hangs up or anything. Hitting the back button doesn't help. Thanks for your help!

[B. Diddy]

Welcome to Android Central! When the call ends, does the screen come back on again? It may be a problem with the proximity sensor. I assume the screen is going dark even when it isn't up against your ear, right? Make sure there isn't anything blocking the proximity sensor, like a dirty screen protector or an ill-fitting case.

[metomax]

In most cases i've encountered, its phone / screen guards / protectors