Find "Caller ID"
Press the menu icon.
Press Phone.
Press the settings icon.
Press Settings.
Press Additional settings.
After a moment the current settings are displayed.
After a moment the current settings are displayed.
Press Caller ID.
Turn your own caller identification on or off
Press Network default, Hide number or Show number.
Please note: you can only hide your caller identification for calls. When you send text or picture messages, your phone number is always displayed.
Exit
Press the home icon to return to standby mode.