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, and press and hold it until a menu appears. Tap Block number or Block contact — the exact wording depends on your Samsung model and Android version. The blocked number can still leave voicemails, but their calls won't ring through and won't show up in your call log.

If you want to block a number that isn't in your phone yet, open Contacts, tap the plus sign to create a new contact, enter the number, save it, then go back and block it the same way. This takes an extra step but prevents you from accidentally blocking the wrong person.

Samsung phones also let you block numbers directly from a text message. Open Messages, press and hold the conversation, and select Block from the menu that appears.

Key Takeaways

  • Press and hold any number in your call history or contacts, then tap Block number — this is the quickest method on any Samsung phone.
  • Blocked callers can still leave voicemails and send text messages, but their calls won't ring and won't appear in your call log.
  • You can block a number from your call history, your contacts list, or directly from a text message conversation.
  • To unblock a number, open Settings, go to Apps, select Phone, then Blocked numbers, and remove the contact from the list.
  • Samsung's native blocking works across all Android versions, but the menu wording may vary slightly between phone models.

Blocking from your call history

This is the most common route because the number is already there. Open the Phone app and look at the list of recent calls. Find the number or contact name you want to block, then press and hold it until a popup menu appears with several options.

Look for Block number, Block contact, or sometimes Add to reject list depending on your phone's software version. Tap it once. Your phone will show a confirmation message — usually something like "Number blocked" — and that's done. The next time that number calls, your phone will send the call straight to voicemail without ringing.

Blocking from your contacts

If you have the person saved as a contact, you can block them from there instead. Open the Contacts app, find the person's name, and tap to open their contact card. Look for a menu icon — usually three vertical dots in the top right corner — and tap it.

Select Block contact or Block number from the menu. Some Samsung phones show this option directly on the contact card without needing the menu. Once blocked, that contact's calls will go straight to voicemail, but you'll still see their contact information in your phone — they're just silenced.

Blocking from a text message

If someone is texting you and you want to stop hearing from them, you don't have to save their number first. Open the Messages app, find the conversation thread, and press and hold the entire conversation (not just one message).

A menu will appear with options including Block. Tap it, and the number is blocked. This method blocks both calls and text messages from that number, so it's useful when someone is bothering you through multiple channels.

What happens when you block a number

A blocked number cannot call you — the call goes straight to voicemail without your phone ringing or showing a notification. They won't see a message saying they're blocked; the call will just fail on their end like any other unanswered call. Blocked calls don't appear in your call log, so you won't see a record that they tried to reach you.

Text messages from blocked numbers still arrive on their end, but you won't see them in your Messages app. Voicemails from blocked numbers still get recorded, but they go into a separate voicemail folder that you can access if you need to. This means blocking doesn't erase the person's ability to contact you — it just removes the interruption from your phone.

How to unblock a number

If you change your mind, you can unblock a number anytime. Open Settings and scroll down to find Apps. Tap Apps, then look for Phone in the list and tap it. Inside the Phone app settings, look for Blocked numbers or Reject list.

Tap that option and you'll see a list of every number you've blocked. Find the one you want to unblock, tap it, and select Unblock or Remove from blocked list. Once you do, that number can call and text you normally again, and their calls will show up in your call log.

The exact path through Settings varies slightly between Samsung models — some phones put this under Phone settings directly, while others nest it deeper in the app menu. If you can't find Blocked numbers in the Phone app settings, try searching "blocked" in your Settings search bar at the top.

Using Samsung's Do Not Disturb mode as an alternative

If you want to silence calls and messages temporarily without permanently blocking someone, Samsung's Do Not Disturb mode is faster. Open Settings, go to Notifications, and tap Do Not Disturb. You can set it to allow calls only from your contacts, which silences unknown numbers without blocking them permanently.

This is useful when you're in a meeting or sleeping and don't want interruptions, but you might want to hear from that person later. You can also schedule Do Not Disturb to turn on and off automatically at certain times. Blocking is permanent until you unblock; Do Not Disturb is temporary and easier to turn off.

Frequently Asked Questions

Can a blocked number tell they've been blocked?

No. When a blocked number calls you, the call fails on their end just like any other unanswered call. They won't receive a message saying you blocked them. They might notice if they call repeatedly and never reach you, but there's no notification from your phone telling them they're blocked.

Will blocked numbers still see my text messages?

No. Text messages you send to a blocked number will fail to deliver, and messages they send to you won't appear in your Messages app. However, messages they sent before you blocked them will still be visible in your conversation history until you delete the thread.

Can I block a number without saving it as a contact?

Yes. You can block a number directly from your call history without creating a contact. Just press and hold the number in your recent calls list and select Block. You can also create a contact with just the phone number, save it, and then block it when ready.

What's the difference between blocking and muting a contact?

Blocking stops calls and texts from reaching you entirely. Muting (or silencing) a contact lets their calls and messages through, but your phone won't ring or vibrate — you'll only see them if you check your phone. Muting is temporary and easier to reverse; blocking is more permanent.

If I unblock a number, will I see their old messages?

No. Unblocking only allows future calls and messages through. Any messages or calls from when they were blocked remain hidden. If you deleted the conversation thread while they were blocked, unblocking won't bring those messages back.