Share your experience!
I've been having an issue with charging my xperia U, where it says its gets stuck on a percentage while charging, so i have to restart the phone every time I want to charge it.
It might be a bug, repair your phone
Update Service (SUS)
PC Companion (PCC)
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355