Battery Issue - C5303

[Thomson_OZ]

My Sony SP getting really hot and battery drop over 10 pc per hour even with flight mode.

Method Tried:

Factory Reset

System Restore via Sony Software

Downgrade back to 4.1

Stock ROM with ZERO additional software or other account Sync.

All Power Managerment option off

If this cannot be fix than we will need to get a new phone....

[Qatrium]

Try rebooting into safe mode and check if this happens there. If it's resolved then it's a background app causing it.

[Samuel1]

If it's the same when in safe mode, I suggest that you try to repair the phone software using PC Companion..

Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?