The fastest way to block a number on Samsung

Open the Phone app, find the number you want to block in your call history or contacts, press and hold it, then tap Block number. That's it — the person won't be able to call or text you, and you won't see their messages or missed calls. If you don't see a Block option, tap the three dots at the top right, then look for Block or Block number in the menu.

If the number is already in your contacts, you can also open the contact, tap the three dots, and select Block. The blocked number goes into a hidden list you can view or unblock later if you change your mind.

Samsung phones come with blocking built in — you don't need to read anything or change settings first. The process works the same way whether the unwanted calls are from telemarketers, spam, or someone you know.

Key Takeaways

  • Press and hold a number in your call history, then tap Block number — no settings to change first.
  • Blocked callers can't reach you by phone or text, and their calls won't show up in your missed calls list.
  • You can unblock a number anytime by finding it in your blocked list and tapping Unblock.
  • If you block someone by accident, open the Phone app, go to settings or the menu, find Blocked numbers, and remove them from the list.

Blocking a number from your call history

Open the Phone app and tap the Recents tab at the bottom — this shows all your incoming and outgoing calls. Find the number or contact name you want to block, then press and hold it until a menu pops up. Tap Block number.

A confirmation message will appear asking if you're sure. Tap Block again to confirm. From that moment on, calls and texts from that number won't come through, and you won't see them in your call history or notification shade.

This method works best if you've already received a call or text from the number, because the number is already visible in your recents. If you want to block a number you've never called or been called by, use your contacts instead.

Blocking a number from your contacts

Open the Contacts app and find the person you want to block. Tap their name to open their contact card. At the top or bottom of the screen, tap the three dots (or sometimes a menu icon), then look for Block contact or Block number.

Tap it, and the contact will be blocked when ready. You can still see the contact in your contacts list, but their calls and texts won't reach you. This is useful if someone's number is saved but you haven't received a recent call from them — you don't have to dig through your call history.

If you block someone this way and later want to unblock them, go back to their contact card, tap the three dots, and select Unblock.

Blocking an unknown or private number

If you're getting calls from Unknown, Private, or Blocked (numbers that hide their caller ID), blocking works differently because there's no specific number to block. Instead, you'll need to use your Phone app's settings to block all calls from unknown numbers.

Open the Phone app and tap the three dots at the top right, then go to Settings. Look for an option like Block unknown, Block calls from unknown numbers, or Reject unknown calls. Turn this on, and your phone will automatically reject calls from numbers that don't display their ID.

Be aware that some legitimate calls — like appointment reminders from doctors' offices or banks — may also hide their number. If you turn on this setting, you might miss those calls. You can always turn it back off if it causes problems.

Finding and managing your blocked list

To see all the numbers you've blocked, open the Phone app and tap the three dots at the top right. Go to Settings, then look for Blocked numbers, Block list, or Blocked contacts. You'll see a list of every number or contact you've blocked.

From this list, you can unblock anyone by tapping their name or number, then selecting Unblock. You can also block new numbers from this screen by tapping a plus sign or Add button, though it's usually faster to block directly from a call or text.

Some Samsung phones also let you block numbers from the Messages app. Open Messages, press and hold a conversation, and look for a Block option in the menu that appears.

What happens when you block someone

When you block a number on Samsung, that person can still call you — but the call won't ring on your phone. Instead, they'll hear a message saying the call couldn't go through, or they'll be sent to voicemail. Text messages from blocked numbers won't appear in your Messages app at all.

Blocked calls and texts don't show up in your call history, missed calls list, or notification shade. It's as if the contact never tried to reach you. The blocked person won't receive a notification that they've been blocked — they'll just experience failed calls and unanswered texts.

If you block someone and then change your mind, unblocking them is when ready. They'll be able to call and text you normally again, and you'll see their calls and messages come through as usual.

Blocking numbers from text messages

If you receive a text from someone you want to block, open the Messages app and find the conversation. Press and hold the message or the contact name at the top of the thread. A menu will appear with options including Block number or Block contact. Tap it to block them when ready.

You can also open the conversation, tap the contact name at the top, and look for a block option in the contact details that appear. Some Samsung phones show a three-dot menu here with a Block option.

Blocking from Messages works the same way as blocking from the Phone app — the person can't call or text you, and you won't see their messages. If you later want to unblock them, go to your blocked list in the Phone app settings.

Frequently Asked Questions

Can a blocked person tell they've been blocked?

No. When someone you've blocked tries to call you, they'll hear a message that the call couldn't go through or they'll reach voicemail — but they won't get a notification saying you blocked them. They might suspect it if calls consistently fail, but Samsung doesn't send a "you've been blocked" alert.

What if I block someone by accident?

Open the Phone app, tap the three dots, go to Settings, and find Blocked numbers. Tap the person you blocked by mistake and select Unblock. They'll be able to call and text you again when ready, and you'll see their calls and messages normally.

Do blocked people still leave voicemails?

Yes, blocked callers can still leave voicemails, but you won't see a notification for them. If you want to listen to their voicemail, you can check your voicemail inbox directly. Some people block numbers but keep voicemail on so they can screen messages later.

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

Yes. If someone calls you and you don't have their number saved, just press and hold their number in your call history and tap Block number. You don't need to create a contact first — blocking works on any number that appears in your recents or that you type in manually.

Will blocking stop spam texts?

Blocking will stop texts from that specific number, but if you're getting spam from many different numbers, blocking one at a time can be tedious. Consider using your phone's spam filter instead — go to Messages settings and turn on spam protection, which catches many spam texts automatically without you having to block each one.