Pantech Perception User Manual page 58

While on a Call
Tap Mute to turn the microphone off so that the phone doesn't transmit
sound to the other party.
Tap Speaker to turn the speakerphone on.
When a Bluetooth headset is connected to the smartphone, tap Bluetooth
to switch to the headset.
Speed Dialing
To set speed-dial numbers, tap D > Speed dial setting, choose a blank speed
number, and then select a phone number from the contacts list.
Tap and hold a number on the keypad to place a call using a speed-dial
number. For numbers with two digits, hold only the last digit.
International Roaming Call
Tap D > Assisted dialing, and then turn Assisted dialing status on. Tap
Reference country and select a country as home location.
Making a call in a current country connects to the specified country.
Call Waiting
Call waiting is a service provided by wireless carriers. A user can use this
service to suspend a current call and switch to an incoming call.
While on a call, tap Accept to answer another call. To switch between the
two calling parties, tap Swap.
Conference Call
Make a call, then tap Add calls to invite another party to the call.
Using Music Files as Ringtones
Open the Music app, tap and hold a song and choose Set as ringtone. The
song appears as a ringtone in the list of ringtones.
58 Calling & Messaging