Samsung SCH-I515MSAVZW - Manual (Page 36)

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Tune performance
Optimize battery life
You can extend your battery's life between charges by turning off features that you don't need. You can
also monitor how apps and system resources consume battery power.
To adjust the settings described here, first touch the Settings icon on a Home or All Apps screen.
Extend the life of your battery
G If you aren't using Wi-Fi, Bluetooth, or GPS, use the Settings app to turn them off. The GPS setting is
located in Settings > Personal > Location services.
G Don't leave the Maps or Navigation apps open on the screen when you're not using them. They use
GPS (and thus more power) only when they're running.
G Turn down screen brightness and set a shorter Sleep timeout: Settings > Device > Display.
G If you don't need it, turn off automatic syncing for all apps: Settings > Personal > Accounts &
sync. Note that this means you need to sync manually to collect messages, email, and other recent
information, and won't receive notifications when updates occur.
G If you know you won't be near a mobile or Wi-Fi network for a while, switch to Airplane mode:
Press and hold the power switch until the Phone options dialog appears. Then touch Airplane
Mode.