1. During a call, press the Center nav key to toggle speakerphone on/off.
    device 2853/1438141.jpg
  2. Press the Right soft key to mute/unmute the microphone.
    device 2853/1438142.jpg
  3. Press the Left soft key to access additional options.
    device 2853/1438143.jpg
  4. Scroll to the desired option, then press the Left soft key to select.
    device 2853/1438145.jpg
  5. Press the End key to end the call.
    device 2853/1438149.jpg
  6. Press the Up and Down nav keys to adjust the call volume.
    device 2853/1439746.jpg