Share your experience!
Once per week?Do you use tak killers,battery savers?
Keep it like that and tell us if the same occurs.
IT could be.Run the device in safe mode for a couple of days:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008
hello,
This is STAMINA problem in new 4.3 update. When I started Stamina i have reset ewery 2 minutes !!!
When Stamina is off problem ist off too 