1. Tap Battery saver to turn on Battery Saver.
   Note: From the home screen, tap the Settings icon > Battery > Battery saver switch.
   
2. Adjust the Brightness to the lowest setting and turn on Night brightness.
   Note: From the home screen, tap the Settings icon > Display > Brightness.
   
3. Set the screen timeout to the shortest setting.
   Note: From the home screen, tap the Settings icon > Display > Screen timeout.
   
4. Turn off location and GPS services.
   Note: From the home screen, tap the Settings icon > Location > Location switch.
   
5. Turn off auto-update apps.
   Note: From the home screen, tap Play Store > Play Store Menu icon > Settings > Auto-update apps.
   
6. Turn off Wi-Fi and Bluetooth services when not in use
   Note: From the home screen, swipe down from the top of the screen to access the Notification Menu > Wi-Fi & Bluetooth.
   
7. If you are traveling and do not have access to mobile or Wi-Fi networks, switch to Airplane mode.
   Note: From the home screen, swipe down from the top of the screen to access the Notification menu > Airplane mode.
   
8. Avoid using live wallpapers.
   Note: From the home screen, tap the Settings icon > Home screen > Wallpaper.
   
9. Turn off Auto-sync data.
   Note: From the home screen, tap the Settings icon > Accounts & sync > Auto-sync data.