Block a number directly from your call log or messages

The fastest way to block a number on Samsung is to open the Phone app, find the number in your call history, press and hold it, then tap Block number. The same method works in your Messages app — long-press the conversation and select the block option. Once blocked, that number cannot call you, text you, or reach you through video call.

If you want to block a number you haven't received a call or text from yet, open the Phone app, tap the three-dot menu at the top, go to Settings, then Blocked numbers, and tap the plus sign to add the number manually. Type or paste the full number and confirm.

The blocked number will not know they are blocked — they will not see a "blocked" message or notification. From their end, the call or text simply will not go through, and they may assume your phone is off or you are not responding.

Key Takeaways

  • You can block a number in seconds by long-pressing it in your call log or messages and selecting the block option.
  • Blocked numbers cannot call, text, or video call you, and they receive no notification that they are blocked.
  • To block a number you have not heard from, use the Phone app menu to access Blocked numbers and add it manually.
  • You can unblock a number at any time by going to Blocked numbers in Phone settings and removing it from the list.
  • Some Samsung phones also allow you to block numbers through the Messages app settings if you prefer to manage text blockers separately.

Where to find your blocked numbers list

On most Samsung phones, your blocked numbers are stored in one place. Open the Phone app, tap the three-dot menu (or the gear icon, depending on your model), and select Settings. Look for Blocked numbers or Call blocking — the exact name varies by Samsung model and Android version.

In this list, you will see every number you have blocked. You can add new numbers here by tapping the plus sign, or remove a number by tapping it and selecting Unblock. Some Samsung models also show a separate blocked list in the Messages app under Settings > Blocked contacts, though this usually pulls from the same master list.

If you cannot find the Blocked numbers option in your Phone app settings, check whether your carrier (like Verizon, AT&T, or T-Mobile) is managing call blocking through their own app instead. Some carriers offer their own blocking tools that work alongside Samsung's built-in feature.

Block a number from a spam or unknown caller

When an unknown number calls you, the call screen usually shows a Block button at the bottom. Tap it immediately to block that number and end the call at the same time. This is the quickest option when you are being called by a spam number or someone you do not want to hear from.

If you missed the call and want to block the number later, open your call log, find the number, long-press it, and tap Block number. You can also report the number as spam at the same time — tap Report as spam before blocking. This helps Samsung and your carrier track patterns of spam calls.

Some Samsung phones show a Block and report option that does both actions together. If you see this option, use it — it sends information to your carrier that helps protect other customers from the same number.

Unblock a number if you change your mind

To unblock a number, open the Phone app, tap the menu, go to Settings, and select Blocked numbers. Find the number in the list, tap it, and select Unblock. The number will immediately be able to call and text you again.

Once you unblock a number, it will not appear in your blocked list anymore, and you will receive calls and texts from it normally. There is no waiting period — the change takes effect right away. If you block the same number again later, you will go through the same process.

If you unblocked a number by mistake, you can block it again using any of the methods described above. There is no limit to how many times you can block and unblock the same number.

What happens when you block a number

When you block a number on Samsung, that person cannot reach you through the Phone app or Messages app. Their calls will not ring through, and their texts will not appear in your message threads. However, they may still be able to reach you through other apps like WhatsApp, Facebook Messenger, or email if they have that contact information.

The blocked number does not receive a notification or message saying they are blocked. Their call may go to voicemail (if you have voicemail set up), or it may simply fail to connect. Some carriers show a generic message like "the call could not be completed," which does not reveal that you blocked them.

Blocking is not the same as deleting. The number remains in your phone's memory, and you can unblock it anytime. If you want to remove the number entirely from your phone, you will need to delete it from your contacts separately.

Use Do Not Disturb or focus modes as an alternative

If you want to silence calls and texts from specific people without fully blocking them, Samsung offers Do Not Disturb and Focus modes. These let you allow calls only from contacts you choose, while silencing everyone else. Open Settings, go to Notifications, and select Do Not Disturb or Focus mode.

In these modes, you can create an allow list of people who can reach you (like family or work contacts) while all other calls and texts are silenced. The caller does not know they are silenced — they can still call, but you will not see or hear it. This is useful if you want to block someone temporarily without making a permanent block.

The difference is that blocking is permanent until you unblock, while Do Not Disturb and Focus modes can be turned on and off quickly. If you need to silence a number for just a few hours, these modes are faster than blocking and unblocking.

Frequently Asked Questions

Can a blocked number still leave me a voicemail?

This depends on your carrier and voicemail settings. Some carriers route blocked calls directly to voicemail, while others prevent them from reaching voicemail at all. Contact your carrier to ask how they handle blocked numbers. If you do not want blocked numbers to reach your voicemail, ask your carrier if they can disable that feature.

Will a blocked number know I blocked them?

No. A blocked number receives no notification or message saying they are blocked. Their call or text simply fails to go through. They may assume your phone is off, you are not responding, or there is a network issue.

Can I block a number that is saved in my contacts?

Yes. You can block any number, whether it is saved as a contact or not. Open the Phone app, find the contact or number, long-press it, and tap Block number. The contact will remain in your phone, but you will not receive calls or texts from them.

What if I block a number but they text me from a different number?

Blocking only blocks that specific number. If someone texts you from a different phone or a different app, you will still receive it. You would need to block each number separately. If someone is harassing you from multiple numbers, consider reporting them to your carrier or local authorities.

Can I block all unknown numbers at once?

Most Samsung phones do not have a built-in "block all unknown numbers" feature in the Phone app itself. However, your carrier may offer this through their own app or website. Check with Verizon, AT&T, T-Mobile, or your carrier to see if they provide a tool to block calls from numbers not in your contacts.