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 'Power saving mode' > Tap the On/Off switch.
Set the Brightness to low or automatic. Note: Swipe down from the Notification bar > Tap the Settings icon > Tap 'Display' > Tap 'Brightness' > Tap the Auto 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 'Display' > Tap 'Screen timeout'.
Turn off Bluetooth,Wi-Fi and NFC when not in use. Note: Swipe down from the Notification bar > Tap the desired icon.
Avoid using Live wallpapers. Note: Touch and hold an empty space on a home screen > Tap 'Wallpapers' > Tap the desired wallpaper > Tap 'SET AS WALLPAPER'.
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: From the home screen, tap 'Play Store' > Tap the Play Store tab > Tap 'Settings' > Tap '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’.