This past week my Iphone was ringing, removed from shirt pocket and the display was black. Could not answer, so I turned it off and waited. Turned back on and working fine. Is this common, how often should you do a reset?
I'm thinking there is something wrong with the sensor that detects your face on your phone. That might be causing both of these problems. It might just be some dirt on the screen or you might need to take it to Apple to fix it.
The sensor is directly to the left of the speaker above the screen.
I called tech support, said the last download had a 3% problem, +- 2 weeks ago. There is a new download which should correct these problems. We'll see, thanks for all the help. If it shows up by chance i'll follow up.