Since I installed the Beta and then the Public version of iOS10 I have had a strange issue when on some phone calls. I'll end a conversation and go to hang up and the screen is locked. I have to unlock the phone and then tap on the green bar at the top to get to the phone and then hang up. I think it has to do with the scenario of that state of the phone when the call was answered. This was NEVER the case in any scenario with any model of iPhone I have ever had since I had my iPhone original. Anyone else have this issue?