Before the update, when I would make a call the screen would go black while I was on the call, but then pop up once I took the phone away from my ear so I could hang up.
The phone no longer does this and stays black, so that I have to hit the button on the top of the phone to get it to come back. Sometimes though, this doesn't work either, so I have no idea if the call has ended or not.
Is it a motion sensor issue? HELP!