Hiding Your Phone Number
Click each step to see the action, click the picture or use the arrow keys
From the home screen, tap the Phone icon
Tap the Menu icon
Tap Additional Settings
Tap Caller ID
Tap your desired caller ID preferences
You can also hide your number for a single call by entering #31# before the number you wish to dial.
If you have chosen to hide your number, you can show your number for a single call by entering *31# before the number you wish to dial.