1. Press the Volume keys to raise or lower the volume as desired.
   
2. To set to vibrate, press the Volume Down key until the Vibrate icon is displayed.
   
3. When Vibrate mode is on, the Vibrate icon will display in the notification bar
   
4. Press the Volume Down key again to enable silent mode.
   
5. When Silent mode is on, the Silent icon will display in the notification bar