To deactivate (which blocks anyone with a hidden number), users often dial *87 .

If you have a permanent block on your caller ID (meaning your calls show up as "Private" or "Unknown") and you want to show your identity for a specific call, you can use .

Find the number you want to unblock and tap the , - , or Unblock icon next to it.

Some third-party apps, such as Nomorobo or Truecaller, offer call-blocking features. To unblock a phone number on these apps, follow these general steps: