1. Access Usage Manager to determine which apps and features are consuming the most battery.
   Note: Tap the AT&T folder > Tap 'Usage Manager' > Tap the 'Battery' tab > Scroll down to view battery usage data > Tap the desired app/feature to view details
   
2. Enable Power saving mode to prolong battery life.
   Note: Swipe down from the Notification bar > Tap the Settings icon > Tap the 'My device' tab > Tap 'Power saving mode' > Tap the Power saving mode switch
   
3. Set the Brightness to low or automatic.
   Note: Swipe down from the Notification bar > Tap the Settings icon > Tap the 'My device' tab > Tap 'Display' > Tap 'Brightness' > Tap the Automatic brightness checkbox, or drag the Brightness slider to the desired level.
   
4. Set the Screen timeout to a shorter duration.
   Note: Swipe down from the Notification bar > Tap the Settings icon > Tap the 'My device' tab > Tap 'Display' > Tap 'Screen timeout' > Tap the desired option
   
5. Turn off Bluetooth,Wi-Fi and NFC when not in use.
   Note: Swipe down from the Notification bar with two fingers > Tap the desired icon.
   
6. Avoid using Live wallpapers.
   Note: Touch and hold an empty space on a home screen > Tap 'Set wallpaper' > Tap 'Home screen' > Tap the desired option.
   
7. Turn off Location services.
   Note: Swipe down from the Notification bar > Tap 'Location'
   
8. Turn off the Auto-update apps feature in the Play Store.
   Note: Swipe to then tap 'Play Store' > Tap the Play Store tab > Tap 'Settings' > Tap 'Auto-update apps' > Tap 'Do not auto-update apps'
   
9. Disable automatic Sync.
   Note: Swipe down from the Notification bar with two fingers > Tap 'Sync'
   
10. 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'
    
11. For information about charging your battery, search tutorials for ‘Charge battery’.