Screen won't come on after talking on the phone?

[tazaxx]

My phone has decided it's not going to turn the screen back on when putting the phone down to horizontal after talking. I have to press the power button to get it to turn on so I can hang up the phone. I've looked at the settings and not finding anything to control it...

 

[zkSharks]

It may be a problem with the proximity sensor itself, I would first try using one of the third-party sensor testing apps on the Play Store to assess that. I've had proximity sensor issues in the past, and it's usually been an unreliable sensor rather than a software issue.