The fastest way to block someone on iPhone

Open the Phone, Messages, or FaceTime app and find the person's name or number. Tap the info icon (a circle with an "i" inside), scroll down, and tap Block this Caller or Block Contact. On iPhone, blocking works across all three apps at once — a blocked person cannot call you, text you, or reach you through FaceTime, and their calls and messages disappear from your inbox.

If you do not see the info icon, swipe left on the contact's name or message thread, tap the three dots or trash icon, and look for a block option in the menu. The exact wording and button location shift slightly between iOS versions, but the option is always in the same general area.

Blocked contacts do not receive a notification that you blocked them, but they will notice they cannot reach you — calls go to voicemail, messages fail to send, and FaceTime requests hang without connecting. You can unblock someone at any time by going to Settings > Phone (or Messages, or FaceTime) > Blocked Contacts, finding their name, and tapping Unblock.

Key Takeaways

  • Blocking someone on iPhone prevents them from calling, texting, or reaching you on FaceTime all at once.
  • You can block a contact directly from the Phone, Messages, or FaceTime app by tapping the info icon and selecting the block option.
  • Blocked people do not get a notification, but their calls go to voicemail and their messages fail to send.
  • You can unblock someone anytime through Settings by finding their name in your Blocked Contacts list.
  • Blocking does not delete old messages or calls from that person — those remain in your conversation history unless you delete them separately.

Blocking from the Phone app

Open the Phone app and go to the Recents tab to see your call history. Find the person you want to block, tap the info icon next to their name, scroll to the bottom, and tap Block this Caller. If you want to block someone not in your recent calls, open Contacts, find their name, tap the info icon, and select the same block option.

Once blocked, that person's future calls will ring once and then go straight to voicemail. They will not see a "blocked" message — the call simply fails on their end. Any voicemails they leave will still arrive in your voicemail inbox, but you can delete them without listening.

Blocking from Messages

Open Messages and find the conversation with the person you want to block. Tap and hold their name at the top of the thread, then tap Block Contact from the menu. Alternatively, swipe left on the conversation in your message list and tap the block icon (usually a circle with a slash) or the three-dot menu to find the block option.

After you block someone in Messages, their old text threads stay in your inbox but appear grayed out. New messages from them will not arrive, and if you try to send them a message, it will fail to deliver. You will see a small "Not Delivered" label under your message, but they will not know you blocked them — they will only see that their messages are not going through.

Blocking from FaceTime

Open FaceTime and find the person in your recent calls or contacts. Tap the info icon next to their name and scroll down to Block this Caller. You can also block someone mid-call by tapping the three dots during the call and selecting the block option from the menu.

Once blocked, that person cannot start a FaceTime call with you, and any pending call requests from them will disappear. If they try to call, they will see a message saying the call failed, but they will not receive a notification that you blocked them.

Managing your blocked contacts list

To see everyone you have blocked, go to Settings and tap Phone, Messages, or FaceTime depending on which app you want to check. Scroll down and tap Blocked Contacts. This list shows all the people you have blocked across that specific app.

To unblock someone, open their name in the Blocked Contacts list and tap Unblock. They will immediately be able to call, text, or FaceTime you again. Unblocking does not restore old messages or calls — those remain deleted if you removed them, or they stay in your history if you kept them.

If you block someone in one app, they are blocked in all three (Phone, Messages, and FaceTime) automatically. You do not need to block them separately in each app. However, the Blocked Contacts list in Settings shows the same names across all three apps, so you only need to unblock them once.

What happens to old messages and calls

Blocking someone does not delete your conversation history with them. Old text threads, call logs, and FaceTime records remain in your inbox unless you delete them manually. If you want to remove a conversation after blocking, swipe left on the thread in Messages or Recents and tap Delete.

If the person you blocked left voicemails before you blocked them, those voicemails stay in your voicemail inbox. You can listen to them, delete them, or save them as before. New voicemails from blocked callers will still arrive, but you can delete them without listening.

Blocking unknown numbers and spam

If you want to block calls from unknown numbers entirely, go to Settings > Phone > Silence Unknown Callers. This sends all calls from numbers not in your contacts straight to voicemail. It is useful for blocking spam, but it also means legitimate callers you do not know will not ring through.

For individual spam numbers, use the same blocking steps as above. If a number calls you repeatedly after you block it, they may be spoofing their caller ID — changing the number that appears on your screen. Blocking the spoofed number will not stop them if they use a different number next time. In that case, report the calls to your carrier or the Federal Trade Commission.

Frequently Asked Questions

Can someone tell if I blocked them?

They will not get a notification, but they will notice — their calls go straight to voicemail, their texts fail to send, and FaceTime requests hang without connecting. Over time, the pattern makes it clear they are blocked, but iPhone does not send an explicit "you are blocked" message.

Do blocked people see my old messages?

No. Once you block someone, they cannot see your old messages in your conversation thread. If you had a text conversation with them before blocking, those messages disappear from their view, though they remain in your inbox unless you delete them.

What if I block someone by accident?

Go to Settings, tap Phone (or Messages or FaceTime), scroll to Blocked Contacts, find their name, and tap Unblock. They can immediately call, text, or FaceTime you again. Your old conversation history will reappear on both sides.

Can I block someone from blocking me back?

No. Blocking is one-way — if you block someone, they can still block you. If you both block each other, neither of you can reach the other through calls, texts, or FaceTime.

Do I need to block someone in each app separately?

No. Blocking someone in Phone, Messages, or FaceTime blocks them in all three apps at once. You only need to block them once, and the block applies everywhere.