Block a number directly from a text message

The fastest way to block a text is to open the message, tap the three dots or menu icon at the top right, and select Block or Block number. The exact wording depends on your phone's manufacturer and Android version, but the menu is always in or near the message thread itself.

Once you block a number, that sender's texts stop arriving in your inbox. Android stores blocked messages in a separate folder you can view later if needed, but you won't get notifications when they arrive. The blocked person can still call you unless you block them in your phone's call settings separately.

This method works on stock Android (the version Google makes) and on phones from Samsung, Google Pixel, OnePlus, and most other brands. If you use a third-party texting app like Google Messages or Samsung Messages instead of your phone's default app, the blocking option may be in a slightly different menu location, but the process is the same.

Block a number from your contacts or phone settings

Open your Contacts app, find the number you want to block, tap it, and look for a menu icon (three dots) at the top or bottom of the screen. Select Block contact or Block number. This method is useful if you want to block someone you already have saved, because you can see their name instead of just a number.

You can also block numbers through your phone's Settings app. Go to Settings, then Phone or Messages (the name varies by manufacturer), find Blocked numbers or Block list, and tap the plus icon to add a number manually. This is the only option if you want to block a number you don't have in your contacts yet.

Blocking through settings is also the place to check your current block list if you forget which numbers you've already blocked, or if you need to unblock someone later.

Block spam and unknown callers automatically

Most Android phones have a built-in spam filter that catches obvious spam texts without you having to block each one manually. Open Settings, go to Messages or Phone, and look for Spam protection, Spam filter, or Filter unknown senders. Turn this setting on if it isn't already.

When spam filtering is on, suspicious messages are sorted into a separate folder (often called Spam or Junk) instead of your main inbox. You won't see notifications for them, but you can still review them later if a legitimate message gets caught by mistake.

Some phones also let you block all texts from unknown numbers — numbers not in your contacts. This is more aggressive and may cause you to miss messages from banks, delivery services, or other senders you don't have saved. Check your settings to see whether this option exists on your phone, and turn it on only if you're willing to accept that risk.

Key Takeaways

  • The quickest way to block a text is to open the message, tap the menu icon, and select Block — the sender's future texts won't reach your inbox.
  • You can also block a number through your Contacts app or through Settings, which is useful if you want to block someone before they text you.
  • Blocked messages go to a separate folder you can view later, but you won't get notifications when they arrive.
  • Turning on spam filtering in Settings automatically sorts suspicious texts into a Spam folder without you having to block each one individually.
  • Blocking a number only stops texts and does not automatically block calls — you need to block calls separately in your phone settings if needed.

What happens when you block a number

When you block a number on Android, that person's texts no longer appear in your main message inbox. Their messages are stored in a blocked folder (the name depends on your phone — it might be called Spam, Blocked, or Archived) that you can open anytime to review what you missed.

The blocked sender does not receive a notification that you blocked them. From their perspective, their text straightforward goes through as normal — they have no way to know it didn't reach you unless they try calling or contact you another way. If they call, the call will ring through normally unless you also block them in your phone's call settings.

If you change your mind, you can unblock the number by going back to your blocked folder or your block list in Settings and selecting the number to unblock. Once unblocked, their future texts will arrive in your inbox again, but you won't see any messages they sent while they were blocked.

Using Google Messages for stronger filtering

Google Messages is Google's texting app and comes pre-installed on many Android phones, or you can read it free from the Google Play Store. It has more advanced spam filtering than many phone manufacturers' default apps, and it learns over time which senders are legitimate.

To block a number in Google Messages, open a text from that sender, tap the three dots at the top, and select Block & report spam. This both blocks the number and reports it to Google's spam database, which helps protect other users. You can also access your block list by opening Google Messages, tapping your profile icon, going to Settings, then Blocked numbers.

Google Messages also has a Spam and abuse setting that you can turn on for extra filtering. When enabled, it automatically sorts likely spam into a separate tab so your main inbox stays clean. This is separate from blocking individual numbers and works alongside it.

Blocking texts from apps and services

Some texts come from apps or online services rather than from phone numbers — things like two-factor authentication codes, delivery notifications, or password resets. These are harder to block because they don't come from a traditional phone number, and blocking them can lock you out of your accounts.

If you want to stop texts from a specific service, the safest approach is to turn off notifications for that service in the app itself or on the website where you signed up. For example, if you're getting too many delivery notifications, log into your delivery app's settings and turn off text alerts. This stops the texts at the source instead of blocking them after they arrive.

If you do block a number that sends you important codes or alerts, you can unblock it anytime through your Settings or blocked folder. Just remember that unblocking restores future messages but does not recover texts you missed while it was blocked.

Frequently Asked Questions

Can someone tell if I blocked them?

No. When you block a number, the sender doesn't receive a notification or bounce-back message. Their texts straightforward don't reach you, and they have no way to know you blocked them unless they try calling or contact you through another method.

Do blocked texts delete automatically?

No. Blocked messages stay in your blocked folder indefinitely until you delete them manually. You can open the blocked folder anytime to review what you missed, or delete messages one at a time or all at once depending on your phone's options.

If I block someone, will they still be able to call me?

Yes. Blocking a number only stops texts — calls from that number will still ring through normally. If you want to block both texts and calls, you need to block the number in your phone's call settings as well, or look for a Block calls and messages option in your block list.

What's the difference between blocking and reporting spam?

Blocking stops that number's texts from reaching you. Reporting spam does the same thing and also sends information about the sender to Google or your phone manufacturer so they can identify patterns and protect other users. Most phones let you do both at once.

Can I block a text without opening it?

Yes. In most texting apps, you can long-press (hold down) a message in your inbox list without opening it, then select Block from the menu that appears. This is faster than opening the message if you just want to block without reading it.