To block your number when making a call, you have several options depending on whether you want to block it temporarily (per call) or permanently:

Temporary (Per-Call) Number Blocking

• Dial a special code before the phone number you want to call:
  • Use *67 before the number on most smartphones and landlines to hide your caller ID for that call. The recipient will see "Private" or "Blocked" instead of your number

* Alternatively, dial #31# before the number to block your number on a per-call basis on many mobile phones

Permanent Number Blocking (Hide Caller ID by Default)

• On iPhone :
  1. Go to Settings > Phone.
  2. Tap Show My Caller ID.
  3. Toggle off to hide your number on all outgoing calls

• On Android :
  1. Open the Phone app.
  2. Tap the menu (three dots), then go to Settings > Calls > Additional settings > Caller ID.
  3. Select Hide number to block your caller ID on all calls

• Note: Some carriers may not support hiding your caller ID, or may override this setting

Carrier Assistance

• You can also contact your wireless carrier to request blocking your number on outgoing calls permanently or for specific lines

Additional Tips

• To unblock your number temporarily if it is hidden by default, dial *82 before the number

• Blocking your number only affects voice calls; text messages will still show your number

These methods let you control whether your phone number is visible when you call someone, either on a call-by-call basis or permanently through your phone settings or carrier