Share your experience!
If the phone has a protective case remove it, if it doesn't try to repair the phone with PCC, if that doesn't work then contact your Local support
Bridge (for Mac)
Alternatives on How to backup Xperias
Connect the phone to a wall charger > press and hold power & volume up for 10 seconds > let it charge for 2 to 3 hours > then repair it with PCC
have you exposed the phone to water, rain, etc?