Communication49Use options during a voice call›You can use the following options while a voice call is inprogress:To adjust the voice volume, press the Volume key up or●down.To place a call on hold, select● . To retrieve a held call,select .To dial a second call, press [● ] → Add call and then dial anew number.To answer a second call, drag● in any direction until itreaches the border of the circle when a call waiting tonesounds. The device asks whether to end or hold the first call.You must subscribe to the call waiting service to use thisfeature.To open the dialling screen, select● Dialpad.To activate the speakerphone feature, select● Speaker.In noisy environments, you may have difficulty hearingsome calls while using the speakerphone feature. Forbetter audio performance, use the normal phone mode.To turn off the microphone so that the other party cannot●hear you, select Mute.To listen and talk to the other party via a Bluetooth headset,●press [ ] → Bluetooth.To switch between the two calls, select● Swap.To make a multiparty call (conference call), make or●answer a second call and select Merge when connectedto the second party. Repeat to add more parties. You mustsubscribe to the multiparty call service to use this feature.