1. Press the Volume keys to adjust the volume.
   
2. Press the Volume Down key until the Silent icon is displayed to enable silent mode.
   
3. Press the Volume Down key again to enable vibrate.
   
4. Tap the Settings icon to access additional volume settings.
   
5. To change alerts, from the home screen, swipe down with two fingers from the notification bar, then tap SETTINGS.
   
6. Tap Sound.
   
7. Tap Notification sound.
   
8. Select the desired sound, then tap APPLY.
   
9. To change the ringtone, tap Ringtone.
   
10. Select the desired ringtone, then tap APPLY.