Surely some clever person has figured out a better solution to battery drain causes other than turning off utilities. Battery monitor app shows 72% use of android system over five hours causing 40% battery drain and excessive heat. Any advice other than turn off Wifi/Data/GPS/Bluetooth etc would be most welcome. Action taken so far: cleared Cache,factory reset,uninstalled all apps,also using Lean droid app to turn off Wifi, data and Bluetooth when screen is off.Thank you.