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I don't understand the issue, could you elaborate?
Check this link
http://talk.sonymobile.com/t5/FAQ/Facing-problems-with-abnormal-battery-and-shutdown/m-p/320375#U320...
Also repair your phone with PCC
PC Companion (PCC)
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
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Contact your local Xperia Care
http://www.sonymobile.com/global-en/support/contact-us/