He will have to remove the sim card tray to take it apart. If you have a pin code lock, you should be fine. To test, he will only have to power it up but it would help to be able to see different screens to see if any color issues with pressure points. Best seen on a white and a black screen.
You could always backup everything you don't want to lose and do a factory reset before you drop it off
You could always backup everything you don't want to lose and do a factory reset before you drop it off
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