1. Press the Volume keys located on the side of the device to adjust the volume.
   
2. Reduce the volume until the Vibrate icon appears to enable Vibrate mode.
   
3. When Vibrate mode is active, the Vibrate icon will display in the notification bar.
   
4. Reduce the volume until the Silent icon appears to enable Silent mode.
   Note: Once you are in Vibrate mode, you have to release the Volume down button, and then tap it to get to Silent mode.
   
5. When Silent mode is enabled, the Silent icon will display in the notification bar.
   
6. Tap the Settings icon to access additional volume settings.
   
7. Adjust Settings as desired.
   
8. To change the ringtone, from the home screen, swipe down from the Notification bar, and then tap the Settings icon.
   Note: For steps to assign a ringtone to a contact, please see the 'Contacts' tutorial.
   
9. Scroll to and tap Sounds and notifications.
   
10. Tap Ringtones.
    
11. Tap the Desired ringtone, then tap OK.
    Note: For steps to assign a ringtone to a contact, please see the 'Contacts' tutorial.
    
12. To change notification alerts, tap Other sounds.
    
13. Tap Messages.
    
14. Edit notifications settings as desired.
    Note: To block or unblock notifications from appearing when the device is locked, go to Settings > Sound & notifications > Notifications on lock screen.