You can press the Volume key to adjust the receiver volume of currently used audio devices (handset, speakerphone or headset), when the phone is in the dialing interface or during a call. You can also press the Volume key to adjust the ringer volume when the phone is idle. 

1. Press  to adjust the ringer volume when the phone is in the idle screen. 

    

2. When the phone is during a call, press  to adjust the volume of audio device (handset, speakerphone or headset). 

    

 
Note: If ringer volume is adjusted to minimum, the 

 icon will appear on the LCD screen.