The fastest way to block a number on iPhone

Open the Phone app, go to Recents, find the number you want to block, tap the info icon (a circle with an "i"), scroll down, and tap Block this Caller. That's it — the number is blocked immediately. If you've already deleted the call from your recents, you can also block a number directly from a text message by swiping left on the conversation and tapping Block, or by opening the message, tapping the contact name at the top, and selecting Block this Caller.

Once you block a number, that person cannot call or text you. Their calls go straight to voicemail without your phone ringing, and their text messages disappear into a separate folder you have to open manually. They won't know they're blocked — they'll just see that their calls and messages aren't getting through.

Key Takeaways

  • You can block a number in seconds from your Phone app's Recents list by tapping the info icon and selecting Block this Caller.
  • Blocked callers can still leave voicemails and send texts, but you won't see notifications for either unless you check the blocked folder.
  • You can unblock a number anytime in Settings > Phone > Blocked Contacts, or by swiping left on a blocked text conversation.
  • Blocking works across calls and texts, but does not stop someone from reaching you through other apps like iMessage, FaceTime, or social media.

Where to find your list of blocked numbers

Go to Settings, tap Phone, then scroll down and tap Blocked Contacts. This shows every number you've blocked on this iPhone. From here you can unblock anyone by swiping left on their name and tapping Unblock, or by tapping Edit in the top-left corner and then the red minus sign next to a contact.

The same list appears in Settings > Messages > Blocked Contacts if you want to manage blocks from the Messages app instead. Both lists show the same blocked numbers — blocking someone in one place blocks them everywhere.

Blocking a number you don't have in your contacts

If a number called you but isn't saved in your contacts, go to Phone > Recents, find the number, tap the info icon, and select Block this Caller. You don't need the person's name or any other information — just the phone number itself.

If you want to block a number that texted you but never called, open Messages, find the conversation, swipe left on it, and tap Block. Or open the conversation, tap the contact name at the top, scroll down, and tap Block this Caller.

What happens when you block someone

Blocked callers will hear the phone ring once or twice, then go to voicemail. They can leave a message, but you won't get a notification. If you want to hear what they said, you have to open the Phone app, go to Voicemail, and look for their message — it will be there, but you won't know it arrived.

Blocked text messages go into a separate conversation thread that you have to open manually. In the Messages app, go to Filters at the bottom, tap Unknown & Spam, and you'll see a folder labeled Blocked or Blocked Contacts depending on your iOS version. Messages from blocked numbers appear there, but you get no notification when they arrive.

Blocking does not prevent someone from contacting you through other apps. They can still call or message you on iMessage, FaceTime, WhatsApp, Instagram, Facebook Messenger, or any other app you have installed. If you need to block someone across multiple services, you'll need to block them in each app separately.

Unblocking a number

Go to Settings > Phone > Blocked Contacts, find the number you want to unblock, swipe left, and tap Unblock. Or tap Edit, then tap the red minus sign next to the number, then tap Unblock.

You can also unblock someone from a text conversation by swiping left on their message thread and tapping Unblock. Once unblocked, they can call and text you normally again, and you'll get notifications for both.

Blocking spam and unknown numbers automatically

If you're getting calls from numbers you don't recognize, you can turn on Silence Unknown Callers in Settings > Phone. This sends any call from a number not in your contacts, recent calls, or messages straight to voicemail without ringing your phone. You can still see the call in your Recents list, but you won't be interrupted.

This is different from blocking — unknown callers aren't blocked, they're just silenced. You can still call them back or add them to your contacts. If you want to block a specific unknown number permanently, use the Block this Caller option instead.

Some carriers also offer spam filtering through their own apps or settings. AT&T has Call Protect, Verizon has Call Filter, and T-Mobile has Scam Shield. These services can block known spam numbers before they reach your phone, though they work differently than iPhone's built-in blocking and may require a separate subscription.

Frequently Asked Questions

Can a blocked person tell they're blocked?

No. They'll hear the phone ring and go to voicemail, which is the same experience as calling someone who didn't answer. They won't receive a message saying they're blocked, and there's no way for them to know for certain unless they try contacting you through another method and you respond.

Will blocked voicemails and texts take up storage space?

Voicemails from blocked numbers do count toward your voicemail storage, but most carriers give you enough space that a few blocked messages won't matter. Blocked text messages take up almost no storage. If you want to delete them, go to the Blocked folder in Messages and swipe left to delete individual conversations.

What if someone calls from a different number after being blocked?

Blocking only applies to the specific number you blocked. If the person calls from a different phone, you'll see the call normally. If you keep getting calls from different numbers, consider turning on Silence Unknown Callers instead, which will quiet all calls from numbers not in your contacts.

Does blocking work on FaceTime and iMessage?

Blocking a phone number blocks calls and texts, but not iMessage or FaceTime. If you want to block someone on iMessage, open the conversation, tap their name at the top, scroll down, and tap Block this Caller — this blocks them on iMessage specifically. For FaceTime, open the app, find the contact, swipe left, and tap Block.

Can I block a number if I don't know who it is?

Yes. You only need the phone number. Go to Phone > Recents, tap the info icon next to the number, and select Block this Caller. You don't need a name, contact information, or any other details.