Need to stop one sender fast? Open the conversation in Messages, tap the sender at the top, tap Info, choose Block this Caller, then confirm Block Contact. That is the fastest way to handle how to block text messages on iPhone when the problem is one number, one contact, or one email address.

Spam texts are messier. Blocking a single number helps with one sender, but scam senders rotate numbers. For spam, use Screen Unknown Senders, Report Junk, carrier spam tools, and basic link safety. Your iPhone already has the main tools. You do not need a random blocker app for the normal cases.

Quick answer: how to block text messages on iPhone

The fastest way to block text messages on iPhone is from the Messages app. Use this when the unwanted sender has already texted you.

1. Open the Messages app.
2. Open the conversation from the number, contact, or email address you want to block.
3. Tap the sender name, number, or profile icon at the top of the screen.
4. Tap Info.
5. Scroll down and tap Block this Caller.
6. Tap Block Contact to confirm.

After you confirm, your iPhone blocks messages, calls, and FaceTime requests from that sender. Apple does not send the person a notification.

How to block text messages on iPhone from an unknown number

You can block an unknown number from the same Messages screen. The sender does not have to be saved in Contacts.

1. Open the text thread from the unknown number.
2. Tap the number at the top of the thread.
3. Tap Info.
4. Scroll down and tap Block this Caller.
5. Confirm with Block Contact.

This works for SMS, MMS, and iMessage senders. If the sender used an email address for iMessage, the same flow usually works from that conversation.

Do not reply to spam before blocking it. Apple notes that filtering rules can treat senders differently after you have replied several times, and replying can also tell a scammer that your number is active.

How to screen unknown senders on iPhone

Screening unknown senders sorts messages from people outside your contacts into a separate area. It is useful for spam cleanup, but it is not the same as blocking.

On current iOS versions, use this path:

1. Open Settings.
2. Tap Messages.
3. Tap Manage Filtering.
4. Turn on Screen Unknown Senders.

On some older iOS versions, the setting may appear as Filter Unknown Senders under Settings > Apps > Messages or Settings > Messages.

Apple's iPhone guide to screening and filtering messages explains the current behavior. Unknown-sender screening separates messages from people outside your contacts and can still allow selected useful notifications, such as verification codes, depending on your region and settings.

How to stop spam texts on iPhone without making things worse

Spam texts need a different playbook because scammers change numbers. Blocking each sender can help, but safety matters more than inbox housekeeping.

1. Do not tap links in suspicious texts.
2. Do not reply with STOP unless you trust the sender.
3. Use Report Junk or Delete and Report Junk when Messages shows it.
4. Forward spam to your carrier if your carrier supports 7726 spam reporting.
5. Turn on carrier spam filtering inside your carrier app if available.
6. Use a reputable SMS filtering app only if built-in tools and carrier filters are not enough.

The FTC's spam text guidance gives the same practical rule: do not click unexpected links, do not share personal details, and report the message instead.

Treat third-party blockers as optional. Apps like Hiya, Truecaller, or carrier-branded tools can help identify spam, but they do not replace Apple's native block list. They also need message-filtering permissions, so choose carefully.

How to block a number from the Phone app

Use the Phone app when the sender called first or left a missed call. The same block list applies across Phone, Messages, and FaceTime.

1. Open the Phone app.
2. Tap Recents.
3. Tap the Info button next to the number.
4. Scroll down and tap Block Caller.
5. Tap Block Contact.

After that, the blocked number should not ring your iPhone, send messages to your inbox, or reach you on FaceTime. Apple says blocked callers may still leave voicemail, but you will not get a normal notification.

What happens when you block someone on iPhone?

Blocking a contact on iPhone blocks that sender across Messages, phone calls, and FaceTime. Apple explains the native behavior in its support guide for blocking contacts on iPhone and iPad.

Here is the plain-English version:

• The blocked sender does not get a blocked notification.
• New texts from the blocked sender do not arrive in your Messages inbox.
• Phone calls from the blocked sender do not ring normally.
• FaceTime calls from the blocked sender are blocked too.
• Old message threads stay on your iPhone unless you delete them.
• Blocked callers may still leave voicemail, depending on carrier behavior.

The sender may guess they were blocked if calls fail or messages stop getting normal responses. Apple does not confirm it for them.

How to unblock texts or manage blocked contacts in iOS 26

Use Settings when you want to review every blocked number in one place. In iOS 26, Apple moved the blocked contacts list under Privacy & Security.

1. Open Settings.
2. Tap Privacy & Security.
3. Tap Blocked Contacts.
4. Find the number, contact, or email address.
5. Swipe left and tap Unblock, or use Edit if your iPhone shows it.

On older iOS versions, check Settings > Messages > Blocked Contacts, Settings > Phone > Blocked Contacts, or Settings > Apps > Messages > Blocked Contacts.

Unblocking a sender does not recover messages sent while the sender was blocked. It only allows future messages and calls through again.

What to do about group texts

You usually cannot block a group text as one object. You can block individual senders, leave the group when iMessage allows it, or mute the thread.

For an iMessage group, open the conversation, tap the group icons at the top, and look for Leave this Conversation. If that option is unavailable, the group may include SMS/MMS users or too few participants.

For any group thread, you can mute alerts:

1. Open Messages.
2. Swipe left on the group conversation.
3. Tap the alerts or bell icon to hide alerts.

If a group text includes spam, delete and report it when Messages offers that option. If the same people keep adding you back, block the individual numbers involved.

If you are managing a child's iPhone, blocking messages may not be enough. You may also want to review Screen Time limits, app access, and communication settings. Softorino's guide to locking an iPhone screen for kids covers a related setup. For broader restrictions, see how to block apps on iPhone.

Blocking vs screening vs reporting: which one should you use?

Blocking, screening, and reporting solve different problems. Use the one that matches the sender.

• Block a sender when you know the number or contact and want messages, calls, and FaceTime stopped.
• Screen unknown senders when you want unknown texts sorted away from your main inbox.
• Report Junk when the text looks like spam, phishing, or a scam.
• Mute a thread when the conversation is legitimate but noisy.
• Carrier filtering helps when spam comes from many rotating numbers.

If one person bothers you, block them. If strangers keep sending scam links, do not waste your day blocking every number. Turn on screening, report the spam, and let your carrier help filter the junk.

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