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hi recently i upgrade Jell bean 4.3 in my sony xperia v everything is fine but when i receive a call or make a call then my DISPLAY light is gone now what i do please tell me thank you
When you are in a call,that is normal if the proximity sensor is covered.
But this is not covered
Are you sure?Boot in safe mode,see if the same occurs:
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008