You can press the volume key to adjust the ringer volume when the phone is idle. You can also press the volume key to adjust the receiver volume of currently engaged audio devices (handset, speakerphone or headset) when the phone is in use.
To adjust the volume when the phone is idle:
1. Press to adjust the ringer volume.
To adjust the volume when the phone is during a call:
1. Press to adjust the volume of currently engaged audio device (handset, speakerphone or headset).