2A. Device Basics 23Phone Basics Plug the flat end of the charger into the device’scharger jack and the other end into an electricaloutlet. The device turns on in with the screenlocked and indicates both its charge state andpercent of charge.With the Sprint-approved Li-Ion battery, you canrecharge the battery before it becomes completely rundown.Extending Your Battery LifeActive applications, light levels, Bluetooth usage, andGPS functionality all act to drain your battery. Thefollowing is a list of helpful tips that can help conserveyour battery power: Reduce your backlight on time. See “Changing theBacklight Time Length” on page 61. Turn Bluetooth off when not is use. See “TurningBluetooth On and Off” on page 121. Turn Wi-Fi off when not is use. See “Turning Wi-Fi Onand Off” on page 149. Deactivate the GPS when not needed. Mostapplications using this function will periodically querythe GPS satellites for your current location; eachquery drains your battery. See “Activating LocationMode” on page 176. Do not wait until your battery is completely depletedbefore charging your device. Repeating this processof a complete discharge and recharge can over timereduce the storage capacity of any battery. Turn off Automatic application sync. See“Synchronizing Accounts” on page 65. Use the Power Control Widget to deactivate hardwarefunctions such as Wi-Fi, Bluetooth, GPS,Synchronization, or LCD brightness setting. Check the Running Services and close anyunnecessary applications.