››Use options during a call
You can use the following options while a call is in progress:
●● To adjust the voice volume, press the Volume key up or down.
●● To place a call on hold, select Hold. To retrieve a held call, select Unhold.
●● To dial a second call, select Add call and then dial a new number.
●● To answer a second call, drag 
right until it reaches the dot when a call waiting tone sounds. The device asks whether to end or hold the first call. You must subscribe to the call waiting service to use this feature.
●● To open the dialling screen, select Dialpad.
●● To listen and talk to the other party via a Bluetooth headset, press [
] → Bluetooth.
●● To turn off the microphone so that the other party cannot hear you, select Mute.
●● To activate the speakerphone feature, select Speaker.
In noisy environments, you may have difficulty hearing some calls while using the speakerphone feature. For better audio performance, use the normal phone mode.
●● To switch between the two calls, select Swap.
●● To make a multiparty call (conference call), make or answer a second call when connected to the second party, select Merge calls. You must subscribe to the multiparty call service to use this feature.
Communication
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