The fastest way to block a number on Samsung

Open the Phone app, go to the Call log tab, and find the number you want to block. Press and hold it until a menu appears, then tap Block number. The call will be rejected silently — the caller won't hear a busy signal or know they're blocked, and you won't see missed calls from that number.

If you want to block a number that hasn't called you yet, open the Phone app, tap the three dots in the top right, select Settings, then Blocked numbers, and tap the plus sign to add a number manually. You can also block someone directly from a text message by opening the conversation, pressing the three dots, and choosing Block.

Samsung phones store blocked numbers in a single list, so blocking someone in the Phone app blocks them everywhere — calls, texts, and video calls all get rejected the same way.

Key Takeaways

  • The quickest method is to find the number in your call log, press and hold it, and tap Block number from the menu that appears.
  • Blocked callers won't hear a busy signal or notification — their calls straightforward fail to reach you, and you won't see them in your missed calls.
  • You can block a number before it ever calls you by going to Phone settings, Blocked numbers, and entering the number manually.
  • Blocking works across calls, text messages, and video calls on Samsung phones.
  • You can unblock a number at any time by going back to your blocked list and removing it.

Blocking from your call log or recent contacts

This is the most common way to block someone. Open the Phone app and tap the Call log tab at the bottom. Scroll through your recent calls until you find the number you want to block. Press and hold the entry — don't just tap it — until a menu pops up with several options.

Tap Block number from that menu. A confirmation message will appear asking if you're sure. Tap Block again to confirm. The number is now blocked, and any future calls or texts from that number will be rejected automatically.

If the number is saved in your contacts with a name, you can also block it by opening the Contacts app, finding the person, tapping the three dots next to their name, and selecting Block.

Blocking a number you haven't heard from yet

If you know a number you want to block but it hasn't called you, you can add it to your blocked list manually. Open the Phone app and tap the three dots in the top right corner. Select Settings, then scroll down and tap Blocked numbers.

Tap the plus sign or Add button. A keypad will appear where you can type in the number you want to block. Enter the full number, including the area code, then tap Block or Add. The number is now blocked even though it's never contacted you.

This method works for numbers you've seen in emails, websites, or messages from other people — you don't have to wait for them to call first.

Blocking someone through a text message

If someone is texting you and you want to block them, open the Messages app and find the conversation. Press and hold the conversation thread until a menu appears. Look for an option like Block or Block number and tap it.

Alternatively, open the conversation, tap the three dots in the top right, and select Block from the menu. The person will be blocked from both calling and texting you, and the conversation will usually move to a separate folder or disappear from your main message list depending on your Samsung model and Android version.

What happens when you block a number

When you block a number on Samsung, the blocked caller's experience is intentionally unclear. Their call won't go through to you, but they won't hear a message saying "this number is blocked." Instead, the call straightforward fails — they may hear a generic error tone or the call may drop after a few seconds. They won't know for certain that you blocked them.

On your end, you won't see any notification that a blocked number tried to call. The call won't appear in your missed calls list, and text messages from blocked numbers won't show up in your main message thread. Some Samsung phones move blocked texts to a separate folder, but you have to look for them deliberately.

Blocked numbers can still leave voicemails on some Samsung phones, though the voicemail won't notify you. If you want to prevent voicemails entirely, you may need to use a third-party call-blocking app with more advanced features.

Unblocking a number if you change your mind

If you block someone by mistake or want to unblock them later, the process is straightforward. Open the Phone app, tap the three dots, go to Settings, and select Blocked numbers. You'll see a list of every number you've blocked.

Find the number you want to unblock and tap it. A menu will appear with an Unblock option. Tap it to confirm. The number is now unblocked and can call and text you normally again.

Unblocking happens when ready — there's no waiting period, and the person won't be notified that you unblocked them.

Using Samsung's built-in spam filter alongside blocking

Samsung phones come with a spam filter that works alongside your blocked list. Open the Phone app, tap the three dots, go to Settings, and look for Spam protection or Call screening. Turn this on to let Samsung automatically filter calls from numbers it recognizes as spam.

This filter catches robocalls and known spam numbers without you having to block them manually. You can also report a number as spam directly from your call log — press and hold a call, tap Report as spam, and Samsung will add it to its spam database to protect other users.

The spam filter and your manual blocked list work together. A number can be on both your personal blocked list and Samsung's spam database at the same time.

Frequently Asked Questions

Will a blocked person know I blocked them?

No. Their call will fail, but they won't receive a message saying you blocked them. They might suspect it if calls consistently fail, but Samsung doesn't send any notification that confirms the block.

Can I block a number without saving it to my contacts?

Yes. You can block any number from your call log or by entering it manually in your blocked list, whether or not it's saved as a contact. Blocking and saving are separate actions.

Do blocked text messages get deleted or stored somewhere?

On most Samsung phones, blocked texts don't appear in your main message thread. Some models move them to a separate folder you can access through your Messages app settings, but you won't be notified when they arrive.

Can I block a number that keeps changing or spoofing?

Blocking individual numbers won't stop someone who changes their number each time. For repeated harassment from different numbers, turn on Samsung's spam filter, report each new number as spam, or consider a third-party call-blocking app that can filter by pattern or keyword.

What if I block someone and they call from a different number?

Blocking only affects the specific number you blocked. If someone calls from a different phone, that call will go through normally. You would need to block each number separately.