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Display sony z3 raised in the left corner
Display sony z3 sollevato nell'angolo a sinistra
I've edited your post as this is an English only forum, you can use Google Translate to reply and/or post.
Since that's a hardware issue you have 2 options
1 DIY which will be cheaper, just buy 2 double sided adhesive for the Z3 + heatgun or hairdryer
or
2 contact your Local support