iPhone turns off display whenever covering the proximity sensor I have an iPhone 7. Sometimes when I put my finger on the proximity sensor (besides front speaker), the display turns black. I can't find a setting to turn it off. Anyone know where it is? Or if I can?

This doesn't just happen when a call is in progress (which is expected behaviour), it happens anytime. Restarting the iPhone didn't resolve the issue, it start appearing again after a day or two.
There are several reasons why this may be happening:


You have a case or screen protector that interferes with the proximity sensor. If so then try to remove them.
Do a force restart of your device. Press and hold both the Side and Volume Down buttons for at least 10 seconds, until you see the Apple logo. 


If that doesn't work then take your iPhone to an Apple Store.