Better battery life

• Download minimum android apps as possible as they need additional android runtime to load.

• Decrease processor speed as ondemand 200MHz(only for developers with terminal)

• Disable tap to wake(only for developers with terminal)

• Disable start Android Support on boot from settings(anyone can do this). If you have just used an android app and not need it for some time, then stop android support on the phone. this will disable loading android emulator on background and save the memory for extra time for a travel etc.Occasionaly restart the phone to clear out apps running in background. Also turnoff bluetooth, data, gps and wifi if not required

• You will get around 2 day battery life with medium usage of native apps only. 

• Since android apps can drain battery it will reduce to less than one day by android apps