1. While on an active call, press the Volume keys to adjust the volume.
   
2. To turn on speakerphone, press OK.
   
3. While speakerphone is enabled, the Option to turn Speakerphone off will display. Press OK to turn speakerphone off.
   
4. To mute a call, select Mute.
   
5. To end a call, press the END button.
   
6. To access Messages, Contacts, or add a new call, select Options and scroll to the desired option.
   
7. Press OK.