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2016-04-09 11:34 AM
2016-04-15 08:06 AM
have you tried booting to safe mode?https://talk.sonymobile.com/t5/FAQ/How-to-boot-you
disable adaptive brightness
adjust sleep time
disabling smart backlight control
does your light sensor work? try to run diagnostics. https://talk.sonymobile.com/t5/FAQ/How-to-boot-you
try to repair your device software using PCC http://support.sonymobile.com/gb/tools/pc-companio