I have the Z3 Compact and the XZ. Both have had the same problems. Firstly, I was told it was the proximity sensor. The XZ phone (still in warranty) went off for repair twice and each time, in less than a week, the problem returned. Its now in for the third time but i have no confidence in it working properly. This last time, I was told if not the proximity sensor, it would be the screen protector (I dont have one!) or possibly the case. I have a Sony case, the sensor is on the front of the phone, and as I don't make calls with the screen covered, this seems a complete red herring. Ive refused to pay to have my Z3 compact repaired by them as i may as well throw themoney away. These are not isolated problems with the Sony phones. I have lots of friends experiencing the same difficulties. My advice is to buy a different make of phone. The customer service is poor,they take no responsibility for faults, and charge you for repairs you shouldn't have to be making!
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