1. To maintain a charge as long as possible, ensure functions like Bluetooth are turned off when not needed.

    See "BluetoothTM On/Off" .
    device 646/265864.jpg
  2. Dim the screen when not in bright light.

    See "Screen display".
    device 646/265865.jpg
  3. Set the device to vibrate or silent mode, when in quiet situations.

    See "Silent vibrate/ringer".
    device 646/265866.jpg