You can turn off your own caller identification, your number will then not be shown at the receiving end when you make a call. Your number is only hidden when you make voice calls not when you send messages.
1. Find "Show My Number"
- Press the phone icon.
- Slide your finger downwards starting from the top edge of the display.
- Press Settings.
- Press Show My Number.
- Press the indicator next to "Allow My Number To Appear When Calling" to turn the function on or off.
- Slide your finger upwards starting from the bottom edge of the display to return to the home screen.