Block texts on iPhone or Android without special apps

You can block unwanted text messages directly in your phone's built-in messaging app without downloading anything extra. The steps differ slightly between iPhone and Android, but both take less than a minute once you find the message.

On an iPhone, open the Messages app, find the text from the number you want to block, press and hold the message, then tap "Block this Caller" from the menu that appears. On Android, open your default messaging app (usually Google Messages or Samsung Messages), find the unwanted text, tap and hold it, then select "Block" or "Block number" depending on your phone model.

After you block a number, texts from that sender will no longer appear in your inbox. They go to a separate folder you won't see unless you look for it. The person texting you won't know they're blocked — the message just fails to deliver on their end.

Key Takeaways

  • Both iPhone and Android let you block numbers directly from the Messages app without installing extra software.
  • Blocked texts disappear from your inbox but are stored separately if you need to review them later.
  • Spam texts often come from numbers that change with each message, so blocking individual numbers has limited effect on spam campaigns.
  • Your phone carrier offers spam-filtering tools that catch many unwanted texts before they reach you, and these are usually free or cost a few dollars per month.
  • If blocking and carrier filters don't stop the texts, you may need to change your phone number or report the sender to your carrier and the FTC.

Use your carrier's spam-filtering service

Your phone company — whether that's Verizon, AT&T, T-Mobile, or another carrier — offers tools that filter spam texts before they land in your inbox. These services catch the bulk of unwanted messages by checking incoming texts against known spam databases.

AT&T customers can turn on Call Protect for free, which filters spam calls and texts. Verizon offers Call Filter, also free, with an optional paid version that adds more features. T-Mobile includes Scam Shield at no cost. Check your carrier's website or call their customer service line to confirm which service you have and how to turn it on.

These carrier services work in the background — you don't need to do anything except enable them once. They're not perfect and won't catch every spam text, but they stop the majority before you see them. If you're still getting unwanted messages after turning on your carrier's filter, the problem is usually either that the filter isn't enabled or that the texts are coming from a source the filter doesn't recognize yet.

Report spam texts to your carrier and the FTC

When you report a spam text, you help your carrier improve its filters and you create a record that the FTC can use to investigate the sender. Most carriers let you report spam directly from the message itself.

On iPhone, open the message, tap "Report Junk" at the top of the conversation. On Android with Google Messages, tap and hold the message, then select "Report spam." Your carrier will receive the report and may add that number to its spam database. You can also forward spam texts to 7726 (which spells SPAM on a phone keypad) — this works on most carriers and sends the message to a spam-reporting system.

If the spam is persistent or you believe it's a scam, report it to the Federal Trade Commission at reportfraud.ftc.gov. The FTC doesn't investigate individual cases, but it tracks patterns across thousands of reports and uses that data to pursue large-scale spam operations. Include the phone number, the date and time you received the text, and what the message said.

Why blocking individual numbers often doesn't work for spam

Spam text campaigns use software that generates a new phone number for each message, so blocking one number stops only that single text. The next message comes from a different number, and blocking that one doesn't help either. This is why blocking works well for texts from people you know (like an ex or a harasser) but barely slows down spam campaigns.

If you're getting dozens of spam texts per day, blocking numbers one at a time will frustrate you and won't solve the problem. In that case, focus on enabling your carrier's spam filter and reporting the texts instead. The filter catches patterns that individual blocking can't.

Spam texts often claim you've won a prize, owe money, or need to confirm account information. Don't reply to these messages, don't click links in them, and don't call the number back — all of these actions confirm to the spammer that your number is active and worth targeting again.

Change your phone number if blocking and filtering don't work

If you're receiving so much spam that blocking and your carrier's filter can't keep up, changing your phone number may be the fastest solution. This is a last resort, but it's worth considering if you're getting more than a few unwanted texts per day.

Contact your carrier and ask them to issue you a new number. Most carriers do this for free if you explain that you're being targeted by spam. When you get the new number, be cautious about where you share it — spam often comes from data breaches or from companies that sold your number to marketers. Avoid posting your number on public websites or giving it to businesses you don't trust.

Before you change your number, make sure you've notified everyone who needs to reach you — family, friends, employers, banks, and any services that use your number for two-factor authentication. Update your number in those accounts before the old number is deactivated.

Recognize common spam text patterns

Spam texts often follow predictable patterns, and learning to spot them helps you avoid replying or clicking links. Common spam messages claim you've won a prize or lottery you didn't enter, say your account has been locked and you need to verify information, or offer deals that seem too good to be true.

Legitimate companies rarely text you asking you to confirm passwords, account numbers, or payment information. If you get a text claiming to be from your bank or a service you use, don't click any links or reply with information. Instead, open your phone's web browser, go directly to the company's official website (don't use a link from the text), and log in to check your account. If there's a real problem, you'll see it there.

Another common pattern is texts that say you've been selected for a refund, tax return, or government benefit. These are almost always scams. Real government agencies and legitimate companies don't recruit customers through random text messages.

Frequently Asked Questions

Can I block texts from unknown numbers?

Most phones let you filter out texts from numbers not in your contacts, though the exact feature name varies. On iPhone, go to Settings > Messages and turn on "Filter Unknown Senders." On Android, open your messaging app's settings and look for "Spam protection" or "Unknown messages." This sends texts from unknown numbers to a separate folder instead of your main inbox.

What happens when I block someone — will they know?

The person won't receive a notification that they're blocked. Their text will appear to send normally on their end, but it won't reach you. If they try to call you, it will go straight to voicemail. They may eventually figure out they're blocked if messages never get responses, but the phone itself won't tell them.

Can I unblock a number after I've blocked it?

Yes. On iPhone, go to Settings > Messages > Blocked Contacts and swipe left on the number you want to unblock. On Android, open your messaging app, go to settings, find "Blocked numbers" or "Blocked contacts," and tap the number to unblock it. You can block and unblock numbers as many times as you need.

Do I need to pay for spam-filtering services?

Your carrier's basic spam filter is free. AT&T Call Protect, Verizon Call Filter, and T-Mobile Scam Shield all offer free versions that catch most spam. Paid versions add extra features like caller ID for unknown numbers, but the free version stops the majority of unwanted texts for most people.

What should I do if a spam text asks me to click a link?

Don't click it. Links in spam texts often lead to fake websites designed to steal your password or payment information, or they download malware to your phone. Block the number, report it as spam, and delete the message. If you're curious whether the message is real, contact the company directly using a phone number or website you find yourself, not one from the text.