How to activate or deactivate your own caller identification
You can deactivate your own caller identification, your number will then not be displayed at the receiving end when you make a call. Your number is only hidden when you make voice calls not when you send messages.
Find "Show My Caller ID"
Press Show My Caller ID.
Activate or deactivate your own caller identification
Press the indicator next to "Show My Caller ID" to activate or deactivate the function.
Return to the Home screen
Press the Home key to end the session and return to the Home screen.