From the main screen, select Menu.
Utilize the 5-way navigation pad to highlight and the OK button to select.
Select Sound & notifications.
Highlight then select any of the following alert types:
Sounds with vibration
Select an option (e.g., VZW Alert, Pop, Echoed) or adjust settings (e.g., On/Off, volume) as preferred then select OK.
Press up or down on the navigation pad to adjust the volume.
The available options and settings vary depending upon alert type.