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hi, my xperia sl has automatic shut down after 10 or 15 minutes. what is the problem?
Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
I would suggest that you first of all try to boot your phone into safe mode to see if the problem may be related to any 3rd party app that you have installed in your phone:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008