Phone playing up after screen repair

[Amy2]

I smashed the screen of my Z3 Compact and it went to be repaired. They had to change both the screen and the back and when I got it back they mentioned something about the screen not being screwed in, but I never thought anything of it. Now, the screen appears to be loose and I think it has been taped on the inside (double sided tape). Also, when either I recieve a phonecall or place a phonecall the screen goes black instead of recognising when I have taken the phone away from my ear and it is difficult to end the call, I have to keep pressing the lock button numerous times in order for the screen to come back on. I paid £80 to get my screen fixed so I was not expecting to have problems with it after the repair, is this something I can take it back to the shop and ask them to fix? Or is this just a problem which comes with getting the screen repaired. Many thanks for your help.

[Rickard]

Sorry to hear about your phone 

From what you're describing it doesn't sound like you have been at a Sony authorized service location. It should of course not be like that.

I recommend that you contact your local support team for information about what service locations we have in your area.

But if an unauthorized service location or dealer have opened your phone i'm afraid your warranty is probably voided.

[Amy2]

Unfortunately it was not a sony authorized service location so I expect my warranty will be void. I have approached the people who repaired my phone and I am to take my phone back to be fixed, do you have any advice on how to fix this problem? I am definitely unhappy with the result of this repair and I want to ensure it is properly fixed this time. Thank you.

[Rickard]

I recommend that you talk to your local support team and an authorized service location to see how they can help you. I can't recommend that you let an unauthorized service location repair your phone and especially not one that returns the phone to you in that state.

The issue you have during calls is the phones proximity sensor that's no longer working properly. It's located at the top front of the phone.