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uninstall any antivirus, taskillers, clean master, ram apps, booster apps > restart the phone > check again.
@vajay0 Why would you create a new topic to ask this again? You have your reply in this topic.
Repair the phone with PCC and report back
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355