Ensure that Brightness is set to Auto/Low. Note: Drag down from the Notification bar with two fingers > Touch and hold 'BRIGHTNESS' > Drag the slider to the desired level.
Disable Bluetooth and Wi-Fi when not in use. Note: Drag down from the Notification bar with two fingers > Tap 'WI-FI' and 'BLUETOOTH' to toggle on/off.
Turn off Live wallpapers. Note: Touch and hold an empty area of the Home screen > Tap 'Home screen wallpaperr' > Tap a different wallpaper type
Disable Location services. Note: Swipe down from the Notification bar > Tap the Settings icon > Scroll to then tap 'Location' > Tap the Location switch
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'
Turn off Auto sync. Note: Swipe down from the Notification bar > Tap the Settings icon > Scroll to then tap 'Accounts & sync' > Tap the Auto sync switch
Turn off Mobile data. Note: Swipe down from the Notification bar > Tap 'MOBILE DATA' to toggle on/off
To access the Battery manager, swipe down from the Notification bar.
Tap the Settings icon.
Scroll to, then tap Battery Manager.
Tap Battery usage to view a breakdown of app battery usage.
Tap the Power saver switch to toggle Power saver mode on/off.
Tap the Extreme power saving mode switch to toggle on/off.