Find "Call forwarding"
Press Menu.

Scroll to Settings and press the Navigation key.

Scroll to Call and press the Navigation key.

Scroll to Voice call and press the Navigation key.

Scroll to Call forwarding and press the Navigation key.

Cancel all diverts
Highlight each of the following options:
Always
Always

If busy

If no reply

If out of reach

Press the Navigation key.

Scroll to Status and press the Navigation key.
Repeat until all diverts have been cancelled.
Repeat until all diverts have been cancelled.

Return to the home screen
Press Disconnect to return to the home screen.
