You can make a call with hidden caller identification, your number will then not be shown at the receiving end. You can also turn off your own caller identification for all calls.
Step 1 of 3
Make a call with hidden caller identification
Tap Phone.
Step 2 of 3
Make a call with hidden caller identification
Tap the keypad icon.
Step 3 of 3
Make a call with hidden caller identification
Key in #31# followed by the number you want to call.