I should have said this before when i tried to hint that pfontana77īs phone is pretty much in format state if it depletes battery on that rate when in idle. Normal things to do in that situation include (use search here and in wiki, both places are FULL of guides how to make battery last and how to debug these kind of problems) - Remove all widgets..ALL! - Take off ALL scheduled events (email checking etc.) - Turn off ALL IM accounts - Turn off gps - Switch 2g only mode - Remove all apps that install something on background. Or actually list programs what you have installed so that people can suggest what to do. - Shut down phone and remove battery - Put it back and restart - Start to monitor battery depletion on bare minimum usage and one by one (~in week period) put stuff on and see how it affects battery usage (Basically disable stuff until device is just "dumb" phone) For future. This applies actually to all computers: You should never try to pin point problem with complex device just trying to tweak one thing or install apps. Of course itīs smart to ask first if there is some app that is known to be problematic. TURN OFF everything and start debugging by turning on stuff one by one. In long run you in most cases spare much of your precious time. And if problem persists backup and flash emmc+rootfs. Also when you have disabled and uninstalled almost everything then processor should go in sleep state when you lock device. With powertop app you can monitor if some program keeps waking your processor from sleep.