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
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
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.
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
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.
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.
Turn off Location services. Note: Swipe down from the Notification bar > Tap 'Location'
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'
Disable automatic Sync. Note: Swipe down from the Notification bar with two fingers > Tap 'Sync'
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'
For information about charging your battery, search tutorials for ‘Charge battery’.