How to block a text number depends on your phone type and carrier
The fastest way to stop texts from a specific number is to block it directly in your phone's messaging app or settings. On most phones, you open the conversation with that number, tap a menu or info button, and select block or report as spam. Your carrier may also offer blocking through their network, which stops texts before they reach your phone — useful if you're getting texts from spoofed numbers that change constantly.
The method you use matters because phone-level blocking only stops that one number, while carrier blocking can catch patterns of spam from multiple numbers pretending to be the same sender. Most people start with their phone, but if a number keeps texting you after you block it, the carrier option becomes necessary.
Key Takeaways
- On iPhone, open the message thread, tap the contact name at the top, scroll down, and tap Block This Caller; on Android, long-press the message, tap Block, or go to the contact and select Block Number.
- Blocking at the phone level stops texts from that specific number but does not prevent spoofed numbers from the same sender reaching you.
- Your carrier (Verizon, AT&T, T-Mobile, etc.) offers network-level blocking that can catch spam patterns and stop texts before they arrive on your device.
- Reporting a text as spam helps your phone's built-in filter learn to catch similar messages automatically in the future.
- If a blocked number keeps texting you from different numbers, contact your carrier to investigate whether the texts are spoofed or the block is not working.
Blocking a number on iPhone
Open the Messages app and find the conversation with the number you want to block. Tap the contact name or number at the top of the screen to open the details panel. Scroll down until you see the Block This Caller option and tap it. A confirmation message will appear — tap Block Contact to confirm.
Once blocked, that number cannot send you text messages, and any existing messages from them will remain in your conversation thread but marked as blocked. If you change your mind, you can unblock the number by going to Settings > Messages > Blocked Contacts, finding the number, and swiping left to delete it from the blocked list.
Blocking a number on Android
The exact steps vary slightly by phone maker and Android version, but the general process is the same. Open your default messaging app (usually Messages, but could be Samsung Messages, Google Messages, or another app). Long-press the message thread from the number you want to block, then tap the block icon or menu option. Some phones show a Block Number button immediately; others require you to tap a three-dot menu first.
Alternatively, open your Contacts app, find the number, tap it, and look for a Block Number or Block Contact option in the menu. After blocking, texts from that number will no longer appear in your inbox, though some Android phones let you view blocked messages in a separate folder if you need to check them later.
Using your carrier's blocking service
Your wireless carrier offers its own blocking tools that work at the network level, stopping texts before they reach your phone. Verizon Call Filter, AT&T Call Protect, and T-Mobile Scam Shield are the major carriers' services. These tools are often free or included with your plan, though some carriers offer a paid premium version with extra features.
To set up carrier blocking, log into your account on your carrier's website or app, navigate to the security or blocking section, and add numbers to a block list. You can also report spam numbers directly through these services, which helps the carrier identify patterns and block similar numbers automatically. Carrier blocking is especially useful if you're receiving texts from spoofed numbers that change frequently, because the carrier can block based on the message content or sender pattern rather than just the phone number.
Reporting spam and using automatic filters
Most phones now have built-in spam detection that learns from your actions. When you block a number or report a message as spam, your phone's filter gets smarter about catching similar messages. On iPhone, you can report a message as junk by swiping left on it in the Messages app and tapping Report Junk. On Android, long-press the message and tap Report Spam or Report as Spam.
Google Messages (the default messaging app on many Android phones) includes a spam filter that automatically catches many unwanted texts without you having to do anything. You can also turn on additional filtering in your messaging app settings. These filters are not perfect, so legitimate messages sometimes end up marked as spam — check your spam folder occasionally to make sure nothing important got caught.
What happens after you block a number
When you block a number at the phone level, that specific number cannot send you text messages. The person texting you will not receive a notification that they are blocked, but they may figure it out if their messages never get a response. Blocked messages do not appear in your inbox, though they usually remain in the conversation thread marked as blocked so you can see the history if needed.
If the same person keeps texting you from different numbers, phone-level blocking becomes ineffective because each new number is technically unblocked. In this case, contact your carrier's customer service and explain the situation. They can investigate whether the texts are spoofed (faked to look like they come from different numbers) and may be able to block the sender at the network level or take other action.
Frequently Asked Questions
Will the person know I blocked them?
No, they will not receive a notification that you blocked them. However, if they keep texting and never get a response, they may suspect it. Some people try calling to see if the call goes through, since blocking usually applies to texts and calls together.
Can I unblock a number after blocking it?
Yes. On iPhone, go to Settings > Messages > Blocked Contacts and swipe left on the number to unblock it. On Android, open your messaging app, go to settings, find Blocked Numbers or Blocked Contacts, and remove the number from the list. The process varies slightly by phone model.
What if I block a number but keep getting texts from it?
This usually means the texts are coming from different numbers that look similar (spoofed). Try blocking each new number as it appears, and report them as spam to help your phone's filter. If it continues, contact your carrier — they can investigate and may block the sender at the network level.
Does blocking a number also block calls from that number?
On most phones, yes. Blocking a contact usually blocks both texts and calls. However, some phones and carriers have separate settings for blocking texts versus calls, so check your phone's blocking settings if you want to block only one type of communication.
Can I see messages from blocked numbers?
On iPhone, blocked messages stay in your conversation thread but are marked as blocked. On Android, blocked messages usually disappear from your inbox but may appear in a separate blocked or spam folder depending on your messaging app. You can view them there if you need to check what was sent.