Dial *67 before the phone number
Enter the full number you want to call
Press call
Your caller ID will be hidden for that call
Check with your carrier if *67 is not supported
Use your phone’s caller ID settings to hide your number for all calls
On iPhone, go to Settings > Phone > Show My Caller ID and turn it off
On Android, open the Phone app settings and disable Caller ID if available
Contact your carrier for permanent caller ID blocking if needed