From the home screen, press the Menu Key and touch Settings > Sound & display to configure call and notification settings (as well as brightness and other screen settings):

• Silent mode: Silence all sounds (including call and notification ringtones) except the audio from music, videos, and other media and any alarms you’ve set. (You must silence media and alarms in their own applications.)
• Ringer volume: Set the incoming call and notification volume. Uncheck the option to use the same volume for both calls and notifications if you’d like to set them separately.
• Media volume: Set the volume for music, videos, and other media.
• Phone ringtone: Set your default incoming ringtone.
• Phone vibrate: Set your phone to vibrate when you receive an incoming call, independent of your ringtone or volume settings.
• Notification ringtone: Set your default notification ringtone.
• Audible touch tones: Set the phone to play tones when using the dialpad to dial numbers.
• Audible selection: Set the phone to play a sound when you touch on-screen items that react to your touch.
• Haptic feedback: Set your phone to vibrate briefly when you press the Back Key or Search Key and when you perform other actions.
• SD card notifications: Set your phone to play a sound when you receive microSD card notifications.
• Emergency tone: Configure how the phone reacts when you place an emergency call.