BenQ Z2 - Manual (Page 43)

Using Your Phone 27
Operations During a Call
The following options marked with an asterisk (*) are dependent on
network support and may require a subscription.
Loud speaker
During a call, long-press to turn the loud speaker on. Long-
pressing once more will turn the loud speaker off.
For better call quality while using the loud speaker, please take off the
phone's show case/armband, and do not block the microphone with
your hand.
Mute
Press (Mute) to turn off the microphone. The person on the
other end of the line will not be able to hear your voice. To restore
the microphone's function, press (Unmute).
Putting a Call on Hold*
1. When the only call is active:
a. Press (Hold) to hold this call.
b. Press to end this call.
2. When the only call is on hold:
a. Press (Unhold) to resume the call.
b. Press to end this call.
3. When there is an active call and a call on hold.
a. Press (Swap) to resume the call that is on hold, and
put the active call on hold.