When I make a call on my Z5 compact the screen locks black and I can't use any function until the phone is hung up by the person on the other end of the call. I've done a full factory reset but it's not helped It's nothing with the screen sensor either. I have to force the phone to restart to end my calls (if the other person don't pick up and I have to end the call. Is there anyone else hav this problem?
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