Operating Instructions

Turning the speakerphone on during a call
To decrease potential damage to your hearing, do not hold
HTC Thunderbolt to your ear when the speakerphone is on.
Do one of the following:
§ Flip HTC Thunderbolt over during a call (be sure that Flip for speaker
is selected in Sound settings).
§ On the call screen, tap .
The speakerphone icon appears in the status bar when the
speakerphone is on.
To turn the speakerphone off, just flip HTC Thunderbolt over again, facing
it up. Or tap again.
Muting the microphone during a call
On the call screen, tap to toggle between turning the microphone on or
off. When the microphone is turned off, the mute icon appears in the
status bar.
Ending a call
Do one of the following to end the call:
§ On the call screen, tap End Call.
§ Slide open the Notifications panel, then tap .
66 Phone calls