Use *67 before dialing in the U.S. and Canada
Enable caller ID blocking in your phone settings
Ask your mobile carrier to block your caller ID by default
Use a secondary number or VoIP app for calls
Turn on “Hide my number” or “Caller ID off” if available
Check local carrier codes for blocking caller ID in your country
Use a prepaid or burner phone for temporary calls
Disable caller ID for individual calls when supported by your device
Verify the restriction by calling a test number or another phone