1. To enable Battery saver, from the home screen, tap the Settings icon.
   
2. Tap Battery.
   
3. Tap the Menu icon.
   
4. Tap Battery saver.
   
5. Tap the Battery saver switch to toggle on or off.
   
6. Tap Turn on automatically.
   
7. Tap the desired option.
   
8. Lower Screen brightness to save battery life.
   Note: Swipe down from the Notification bar with two fingers > Drag the Brightness slider to the desired level.
   
9. Set the Screen timeout to a shorter duration.
   Note: From the homescreen, tap the Settings icon > Tap 'Display' > Tap 'Sleep.'
   
10. Turn off Bluetooth and Wi-Fi when not in use.
    Note: Swipe down from the Notification bar with two fingers > Tap the desired icon.
    
11. Avoid using Live wallpapers.
    Note: Touch and hold an empty space on a home screen > Tap 'WALLPAPERS' > Tap the desired wallpaper > Tap 'Set wallpaper.'
    
12. Turn off Location services.
    Note: Swipe down from the Notification bar with two fingers > Tap 'Location'
    
13. Turn off the Auto-update apps feature in the Play Store.
    Note: From the home screen, tap 'Play Store' > Tap the Play Store tab > Tap 'Settings' > Tap 'Auto-update apps'
    
14. Disable automatic Sync.
    Note: From the home screen, tap the Settings icon > Tap 'Accounts' > Tap 'Google' > Tap the desired Gmail account > Tap the desired option.
    
15. If you are traveling and do not have access to mobile or Wi-Fi networks, switch to Airplane mode.
    Note: Press and hold the Power/Lock key > Tap 'Airplane mode'