To access call functions
You have different possibilities:

- Make a call.
- Answer a call.
  Note:

  An incoming call will automatically be transferred to your message box if you do not

  answer it.

- Redial the last number.
  Note:

  Your phone will store the 5 previously dialed numbers.

- Adjust the `earpiece` volume.
  Warning:

  If the volume is too high, others might be able to hear what the caller says.

  In addition, excessively high volumes may damage your ears.

- Access in-call functions.