Find "Send my caller ID"
Press the Navigation key.
Scroll to Settings and press the Navigation key.
Scroll to Call and press the Navigation key.
Scroll to Send my caller ID and press the Navigation key.
Activate or deactivate
Highlight Yes or No and press the Navigation key.
Please note: it is only possible to hide your caller identification for voice calls. When you send text messages, your phone number is always displayed.
Exit
Press Disconnect to return to standby mode.