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MUTE A CALL
During a call press the power key briefly to light up the display, then
press the Mute button or Options > Mute to mute your microphone.
The mute icon is displayed.
MAKE A CONFERENCE CALL
A conference call can be made between yourself and two or more
other parties.
During a call press the power key briefly to light up the display, then
press Options > Conference
Call the first number.
While you are connected, tap
Add call
.
Call the second number.
While you are connected to the second number, tap
Merge
To add the third party, tap
Add call
.