During a call
Mute or unmute the microphone — Select or .
Put an active voice call on hold — Select
or .
Activate the loudspeaker — Select . If you have attached a compatible headset
with Bluetooth connectivity, to route the sound to the headset, select Options >
Activate BT handsfree.
Switch back to the handset — Select .
End a call — Select .
Switch between active and held calls — Select Options > Swap.
Tip: To put an active call on hold, press the call key. To activate the held call,
press the call key again.
Send DTMF tone strings
1. Select Options > Send DTMF.
2. Enter the DTMF string or search for it from the contacts list.
3. To enter a wait character (w) or a pause character (p), press * repeatedly.
4. To send the tone, select OK. You can add DTMF tones to the phone number or
DTMF field in contact details.
End an active call and replace it with another incoming call — Select
Options > Replace.
End all calls — Select Options > End all calls.
Many of the options that you can use during a voice call are network services.