iPhone 5 battery problem on IOS 6.1.3
My iphone 5 battery drains much faster since it was updated to 6.1.3.
the battery drops about 30% through night (8 hours) even it is on standby mode without any usage.
and it was 4%-6% on 6.1.2
what can I do since there is no way to go back to 6.1.2?
iPhone 5, iOS 6.1.3