Share your experience!
Are you using task killers,phone optimizers?Boot your phone in safe mode and see how it goes:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008
If you boot in safe mode and it works fine,you know that it is an application acting up and making the phone restart.
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