The fastest way to block a text on Android

Open the text message from the person you want to block. Tap and hold on the conversation (or the sender's name, depending on your phone's messaging app). A menu will appear with options — look for "Block" or "Block number" and tap it. The phone will ask you to confirm. After that, texts from that number will no longer reach your inbox.

The exact steps vary slightly depending on which messaging app you use — Google Messages, Samsung Messages, or a third-party app like WhatsApp. But the principle is the same: find the conversation, hold down on it, and select block from the menu that appears.

Once you block a number, that person's texts won't come through at all. They won't know they're blocked (Android doesn't send a notification), but if they try to call you, they may hear a message saying the call couldn't go through, depending on your carrier.

Key Takeaways

  • You can block a text sender directly from the conversation by tapping and holding the message or contact name, then selecting "Block" from the menu.
  • Blocked texts disappear completely — they won't appear in your inbox or notification bar, and you won't be notified that a blocked person tried to message you.
  • Different messaging apps (Google Messages, Samsung Messages, WhatsApp) have slightly different block interfaces, but all are found in the conversation menu.
  • You can unblock a number at any time through your phone's settings or the messaging app's blocked contacts list.

Blocking through your phone's settings

If you don't have an active conversation with the person you want to block, you can block them through your phone's main settings instead. Go to Settings > Messages (or Messaging, depending on your phone brand) and look for an option called Blocked contacts, Blocked numbers, or Block list.

Tap the plus sign or "Add" button, then enter the phone number or contact name you want to block. Some phones let you type the number directly; others require you to select from your contacts. Once added, that number is blocked system-wide for text messages.

This method is useful if someone has been harassing you but you've already deleted the conversation, or if you want to block a number before they ever text you.

Blocking through your messaging app

Most Android phones come with a default messaging app — Google Messages on newer phones, Samsung Messages on Samsung devices, or another carrier-specific app. Each has its own block feature, usually found by opening the app and accessing settings or the conversation menu.

In Google Messages, open the app, tap and hold the conversation you want to block, then tap the trash or block icon (it varies by version). You'll be asked to confirm.

In Samsung Messages, tap and hold the conversation, then tap "Block" from the menu that appears. In WhatsApp or other third-party messaging apps, the process is similar — find the conversation, tap and hold, and look for a block option.

The advantage of blocking through your messaging app is that you can see all your blocked contacts in one place within that app, making it easy to unblock someone later if you change your mind.

What happens when you block a number

When you block a text sender on Android, their messages stop arriving in your inbox. You won't see a notification, and the conversation will no longer appear in your message list (though it may still exist in your archived messages, depending on your app).

The blocked person won't receive a notification that they've been blocked. However, if they try to call you, they may hear a message from your carrier saying the call couldn't go through, or the call may ring once and then fail. This varies by carrier and phone model.

Blocked texts are simply deleted — they don't go to a separate folder where you can review them later. If you need to keep a record of what someone said before you blocked them, take a screenshot of the conversation first.

Unblocking a number

If you change your mind, you can unblock a number at any time. The easiest way is to go to Settings > Messages (or Messaging) > Blocked contacts or Block list, find the number you want to unblock, and tap the minus sign or delete button next to it.

Alternatively, open your messaging app, go to its settings or menu, find the blocked contacts section, and remove the number from there. Once unblocked, that person's texts will come through normally again, and you'll see their messages in your inbox.

Unblocking doesn't restore old messages from before you blocked them — those are permanently deleted. But new messages from that number will arrive as usual.

Blocking spam and robocalls

If you're being flooded with spam texts or robocalls, blocking individual numbers one at a time can be tedious. Many Android phones have a built-in spam filter that you can turn on in your messaging app settings. Google Messages has a "Spam protection" toggle that automatically filters suspected spam.

You can also report a message as spam before blocking it. In most messaging apps, tap and hold the message and select "Report spam" or "Mark as spam." This helps your phone learn what spam looks like and may help your carrier block similar messages for other users.

For persistent robocalls, consider using a third-party app like TrueCaller or RoboKiller, which use databases of known spam numbers to block calls and texts automatically. These apps require separate installation but offer more aggressive filtering than your phone's built-in tools.

Blocking contacts vs. blocking numbers

There's a difference between blocking a contact (a person saved in your phone) and blocking a raw phone number. If you block a contact, you're blocking all the phone numbers associated with that contact. If you block a number directly, you're blocking only that specific number.

This matters if someone has multiple phone numbers. If a person texts you from a different number than the one you blocked, that new number will get through unless you block it separately. If you want to block someone completely, make sure you block all their known numbers, or block them as a contact if they're saved in your phone.

Frequently Asked Questions

Can a blocked person tell they've been blocked?

No, Android doesn't send a notification when you block someone. However, if they try to call you repeatedly, they may suspect something is wrong when calls consistently fail or go straight to voicemail. Texting won't give them any feedback — their messages simply won't be delivered.

Do blocked texts go to a spam folder?

No. Blocked texts are deleted immediately and don't appear anywhere on your phone. They don't go to a separate folder or archive. If you need to keep a record of what someone said, screenshot the conversation before you block them.

What if someone texts me from a different number after I block them?

You'll receive the message normally, because you've only blocked the original number. If someone is harassing you from multiple numbers, you'll need to block each number separately. Consider reporting the behavior to your carrier or local police if it's persistent.

Can I block a number without having their contact saved?

Yes. You can block a raw phone number through your phone's settings even if that person isn't in your contacts. Go to Settings > Messages > Blocked contacts, tap Add, and enter the number directly.

Will unblocking someone let me see old messages from them?

No. When you block someone, their messages are deleted and don't come back when you unblock them. You'll only see new messages they send after you unblock the number.