Block a Number Using the Phone App

The fastest way to block a number on Samsung is through the Phone app, which is built into every Samsung device. Open the Phone app, go to the Call Log tab at the bottom, and find the number you want to block. Press and hold on that number until a menu appears, then tap Block number. The number is now blocked — calls and text messages from that contact will no longer reach you.

If you want to block a number that hasn't called you yet, you can also go to Contacts, find the person or number, tap the three dots in the top right corner, and select Block contact. Either method takes about 10 seconds and requires no settings changes.

Key Takeaways

  • Open the Phone app, find the number in your Call Log, press and hold it, and tap Block number — this is the quickest method.
  • Blocked numbers cannot call you, text you, or reach you through video calls; their calls go straight to voicemail without ringing your phone.
  • You can unblock a number at any time by going to Phone settings, selecting Blocked numbers, and tapping the minus sign next to the contact.
  • Samsung's native blocking works across all apps on your phone, so you do not need a separate blocking app.

Block a Number From Your Contacts

If the number is already saved in your Contacts, blocking takes one extra step. Open the Contacts app, search for the person's name, and tap their entry. At the top of their contact card, tap the three vertical dots (menu icon), then select Block contact. The number is blocked when ready.

This method is useful if you want to block someone you know by name rather than scrolling through your call history. It also ensures you block the correct number if a contact has multiple phone numbers saved.

Block Unknown or Spam Numbers

If you receive a call from a number not in your contacts, you can block it directly from the incoming call screen. When the call comes in, tap the Decline or Reject button. Some Samsung models show a Block option on the call screen itself — if you see it, tap it when ready to block before the call ends.

If you missed the call and want to block the number afterward, open your Call Log, find the unknown number, press and hold it, and tap Block number. You can also block numbers from text messages the same way — press and hold a text from an unknown sender and select the block option.

Manage Your Blocked Numbers List

To see all the numbers you have blocked, open the Phone app and tap the three dots in the top right corner. Select Settings, then Blocked numbers. This screen shows every number you have blocked on your device. From here, you can unblock any number by tapping the minus sign next to it, or block additional numbers by tapping the plus sign.

Your blocked list stays on your phone even if you restart it. If you switch to a new Samsung phone, your blocked numbers do not transfer automatically — you will need to re-block them on the new device, or check whether your phone's backup and restore feature (Samsung Cloud or Google) includes blocked contacts.

What Happens When You Block a Number

When you block a number on Samsung, that person cannot reach you through calls, text messages, or video calls. Their calls will not ring your phone — instead, they will hear a message saying the call cannot be completed, or the call will go directly to your voicemail. Text messages from blocked numbers do not appear in your message threads.

The blocked person does not receive a notification that you blocked them. However, if they try to call you repeatedly, they may figure it out based on the consistent message they hear. Blocking is one-way: you can still call or text them if you choose to, though most people do not.

Use Samsung's Call and Message Filtering

Beyond blocking individual numbers, Samsung phones include a Call and Message Filter feature that can automatically block spam and unwanted calls. Open the Phone app, tap the three dots, go to Settings, and select Call and Message Filter. Turn on the filter and choose your protection level — Basic blocks known spam, while Enhanced also blocks numbers not in your contacts.

If you choose Enhanced filtering, you will only receive calls from people in your Contacts, your Favorites, or your recent Call Log. This is stricter than blocking individual numbers and may cause you to miss calls from new contacts. You can adjust the filter level at any time or turn it off entirely if it blocks too many legitimate calls.

Frequently Asked Questions

Can a blocked number still leave me a voicemail?

On most Samsung phones, blocked numbers cannot leave voicemail messages — their calls go to a blocked voicemail folder that you do not see. However, this depends on your carrier and your voicemail settings. Contact your carrier if you want to confirm how they handle blocked voicemail.

What if I block someone by mistake?

Open the Phone app, tap the three dots, go to Settings, and select Blocked numbers. Find the contact you want to unblock and tap the minus sign next to it. The number is unblocked when ready and can call or text you again.

Do blocked numbers show up in my call history?

No. Once you block a number, calls from that number do not appear in your Call Log. If you unblock the number later, the old calls still will not show up — the history is deleted when you block.

Can I block a number without opening the Phone app?

Yes. If you receive a text message from a number you want to block, press and hold the message thread and look for a Block option. You can also block numbers through the Messages app without opening Phone.

Will blocking a number stop them from seeing my location or status?

Blocking only stops calls, texts, and video calls. It does not hide your location or change your status visibility on apps like Google Maps or social media. If you want to hide your location from someone, you need to adjust privacy settings in those apps separately.