Operating Instructions

Changing sound settings
Switching between silent, vibration, and normal modes
Do one of the following:
§ To change from silent to normal mode, press the VOLUME UP
button.
§ To change from vibration to normal mode, press the VOLUME UP
button twice.
§ From the Home screen, press , and then tap Settings > Sound >
Sound profile.
Playing a sound when selecting onscreen items
1. From the Home screen, press , and then tap Settings.
2. Tap Sound.
3. Select or clear the Touch sounds check box.
Lowering the ring volume automatically
HTC Thunderbolt has a quiet ring feature that automatically lowers the ring
volume when you move it.
1. From the Home screen, press , and then tap Settings.
2. Tap Sound.
3. Select or clear the Quiet ring on pickup check box.
Settings 239