i have seen issue where people had the screen not waking up simply because their thumb was over the sensor so the phone thinks it up to the callers ear.
The sensor is in the top left corner of the phone. This is easy to do with your left thumb when you don't know you're doing it. I pointed this out to someone with this problem and once they were conscious of what they were doing, they never had the problem again.
See if that helps.
The sensor is in the top left corner of the phone. This is easy to do with your left thumb when you don't know you're doing it. I pointed this out to someone with this problem and once they were conscious of what they were doing, they never had the problem again.
See if that helps.