iPhone: How To Block “No Caller ID” Calls

Are you getting a lot of calls from unknown callers (e.g., spammers, telemarketers etc) with “No Caller ID”. You may want to block these calls because you cannot possible identify the number of a caller before answering. These calls may also be labeled as Anonymous, Private, or Blocked.

no caller id calls

You are receiving these calls because, in the USA, The Federal Communications Commission (FCC) mandates that cellular carriers allow people the ability to block their Caller ID, hence No Caller ID. Some ordinary people may want to block the display of their telephone numbers intentionally because of some privacy concerns.

There are also more and more telemarketers, spammers using No Caller ID because they do not want to be known.

The good news is that you can block specific callers/numbers.

In this short article. I am explaining what you can do to block No Caller ID calls. There are basically two methods to do this:

Method 1: Do Not Disturb

You can block unknown callers using the Do Not Disturb mode. This mode lets you silence calls. Here is how:

  • Go to Settings > Do Not Disturb
  • Choose Manual and turn on Do Not Disturb (when it is on, you will see a moon icon in the status bar)
  • Tap Allows Calls From
  • Choose “All Contacts

All calls from numbers/anyone who isn’t already added to your address book will now be silenced. This means that “No Caller ID” calls will be silenced because they won’t be in the address book.

Note that the calls are not blocked, they are only silenced. You’ll still get the calls.

Method 2:Using Contacts

  • Create a new contact, you may name this new contact “No Caller ID”. Here is how:
    • Launch the Phone app
    • Tap Contacts
    • tap the + button
    • As phone number, enter 000-000-0000
    • Tap Done
    • Now scroll down and tap Block this caller. A popup will appear saying “you will not receive phone calls, messages or FaceTime from people on the block list” then tap Block Contact.

no caller id block


Method 3: Block  No Caller ID Calls (cellphone services)

The ONLY way to truly block a number is at the network level. 

Most cellular carriers have a feature to block these calls. Here is how:

Check with your carrier provider to see if they provide this feature. Some carriers, as of now, do not offer this (e.g., Sprint).


See also: How to Unlock a Device From a Previous Owner’s Apple ID?

You can not find out who a “No Caller ID” caller is.

Note you can easily block a phono number/contact individually by going to Settings > Phone > Call Blocking & Identification.

If you want to hide your number/caller id when calling, simply go to Settings > Phone > Show My Caller ID and turn this off. Please note that not all carriers allow this.

The terms “No Caller ID”, “Private Caller“, “Unknown Caller”, “Blocked Call”, or “Anonymous Call” are the same thing.

See also: How to Turn 4G or LTE Off On iPhone

Dr. Serhat Kurt worked as a Senior Technology Director. He holds a doctoral degree (or doctorate) from the University of Illinois at Urbana / Champaign and a master’s degree from Purdue University. Here is his LinkedIn profile.

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59 thoughts on “iPhone: How To Block “No Caller ID” Calls”

  1. Trying to do the opposite – Using consumer cellular and xfinity service providers.
    – cannot receive calls from numbers where the caller has used “privacy settings” to hide their phone number, ie doctor calling from cell phone
    – is there a setting for iPhone 11SE and 6 that can be done to allow the calls to come through or is this a situation that has to be adjusted by the service provider?

    • That blocks all calls that aren’t in the contact list. Maybe my son is in jail and I want that call to come through because it has a legit caller ID. Sadly Apple is putting profit above all else because it’s trivial to block ‘no-caller ID’ calls, but they love spam as they make millions from it. They get 30% of the monthly fees that call blocker companies charge. So nothing will ever change.

  2. iPhone 7

    Option 2 does not work.

    I have gone through the steps as detailed above in different formats, and No Caller ID calls still coming through

    I definitely remember an option box on previous IOS that you could select to prevent these calls.

    Such a shame it has been removed by the apple development team

  3. Def doesn’t work – tried it all ways & still getting “no caller ID” or private calls

    iPhone 5
    iPhone 6
    iPhone SE

    The carrier services & the f’n FCC better do something soon. >:(

  4. Option 2 DOES NOT WORK. I had a friend call me with *67 and ALL CALLS STILL WENT THROUGH. I tried adding 0000000000 for every version of phone and made the caller id “No Caller ID” and THIS DIDN’T WORK.


  5. Works for me … iPhone 6 S Plus
    IOS 12.12
    Clicked on 📞
    Selected Contacts
    Clicked the ➕at the upper right
    Named the contact No Caller ID
    Clicked phone and entered 0000000000 as it would not accept 000-000-0000
    Clicked done at the upper right
    Scrolled down the new contact and clicked Block
    The message became Unblock

  6. Option 2 worked on my iPhone 8! Thank you! I really didn’t want to block legitimate calls by using the Do Not Disturb option.


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