How to block a contact in WhatsApp on a Samsung Android phone: 3 working methods

WhatsApp remains the most popular instant messenger in the world, but sometimes communication with individual contacts becomes uncomfortable. If you are fed up with spam messages, insults, or simply want to limit a specific person’s access to your profile, blocking will be the best solution. On smartphones Samsung Galaxy (series A54, S23, Z Flip5 and others), the blocking process has its own nuances due to the proprietary shell One UI.

In this article you will find step-by-step guide for all current versions WhatsApp (including 2.24.xx), and we will also analyze hidden consequences of blockingthat the messenger does not advertise. For example, did you know that a blocked contact can still see your online status if you're both in the same group? Or that blocking does not automatically delete chat history? We will tell you how to completely erase traces of communication and what to do if the blocking function suddenly disappeared after an update.

We will pay special attention problems on Samsung: why sometimes the "Block" button is inactive, how to get around the "Unable to block contact" error and what to do if, after blocking, messages continue to arrive through notifications. At the end of the article - FAQ with answers to rare questionswhich are not covered even in the official help WhatsApp.

1. How to block a contact directly from a WhatsApp chat on Samsung

The fastest way is to use the menu inside the dialogue. This method works on all models Samsung Galaxy (including Galaxy S24 Ultra, A34 5G, Z Fold5) regardless of version One UI. Important: the contact must be saved in the phone book or at least once write to you in WhatsApp.

Instructions:

• 📱 Open the application WhatsApp and go to the chat with the user you want to block.
• ⚙️ Click on the three vertical dots in the upper right corner (chat menu).
• 🔒 Select item More → Block (on some models Samsung may be displayed as Blocking).
• ✅ Confirm the action by clicking Block in the pop-up window.

On Samsung Galaxy s One UI 5.0/6.0 after blocking, a notification may appear: "The contact is blocked. He will not be able to call you or send messages.". However, this is not entirely true - a blocked user can still see your changes in the general group chat if you are both members there. He will also be able to see your new status if you publish it.

⚠️ Attention: If you have blocked a contact, but he continues to write to you through WhatsApp Business (if he has a business account), messages will come. To completely stop communication, block it in the business version of the messenger.

2. Blocking through WhatsApp settings: when the chat is unavailable

If you have deleted a dialogue with the user or do not want to open it, you can block the contact through the main menu WhatsApp. This method is suitable for Samsung Galaxy with any version Android (from 10 to 14).

Step-by-step guide:

1. Open WhatsApp and click on the three dots in the upper right corner (main menu).
2. Select Settings → Account → Privacy.
3. Scroll down and tap Blocked contacts.
4. Click on the icon + (or Add) in the upper right corner.
5. Select a contact from the phone book list or enter its number manually.
6. Confirm blocking.

On Samsung Galaxy s One UI 6.1 (for example, Galaxy S24+) after blocking, the system may offer automatically delete all messages from this contact. If you agree, the correspondence will be erased without the possibility of recovery (even through backup copies).

Blocking method	Does it work without opening a chat?	Deletes correspondence?	Is it visible to the contact?
Through the chat menu	❌ No	❌ No (unless deleted manually)	❌ No
Through privacy settings	✅ Yes	⚠️ Optional (will offer to delete)	❌ No
Via contact profile	❌ No	❌ No	❌ No
Via message notification	✅ Yes (if the message has arrived)	❌ No	❌ No

3. Blocking through a user profile: hidden features

Few people know, but WhatsApp you can block a contact directly from his profile - even if you have not saved his number in the phone book. This method is especially useful for Samsung Galaxywhere sometimes there are bugs with the display of the block button in the chat.

How to do this:

• 👤 Open a chat with the user and click on his name/avatar at the top of the screen.
• 📋 Scroll down to the Contact information.
• 🔒 block Click Block [name] (on some models Samsung the button may be hidden under More).
• ✅ Confirm the action.

On Galaxy Z Flip5 and Galaxy S23 FE after blocking through the profile, the system can show a notification: "You will no longer receive calls and messages from this contact"However, this does not apply. on:

• 📢 Messages in group chatswhere you are both members.
• 📞 Calls through WhatsApp Business (if the contact has a business account).
• 📌 Mentions in statuses (if the contact tags you in their status).

What does the blocked contact see?

The blocked user will not see the blocking notification, but will notice the following changes:

- His messages to you will be marked with one gray tick (as if not delivered).

- He will not be able to see your status "online" or time of last visit (if you have the appropriate privacy setting enabled).

- Calls to you via WhatsApp will be automatically reset.

- If you are both in a common group, he will still see your messages there.

4. Why is the "Lock" button inactive on Samsung and how to fix it

Users Samsung Galaxy often encounter a problem when the lock button WhatsApp becomes gray and cannot be pressed. This can happen for several reasons, related both to the settings of the messenger and to the features of the firmware One UI.

Main reasons and solutions:

• 🔄 Outdated version of WhatsApp: Update the application via Galaxy Store or Google Play. On Samsung sometimes there are conflicts with automatic updates.
• 📱 One UI restrictions: Restart your phone - on some models (Galaxy A14, M33) background processes block access to the messenger functions.
• 🔒 The contact is already blocked: Check the blocked list in Settings → Account → Privacy → Blocked contacts.
• 📵 The number is not saved in contacts: WhatsApp na Samsung sometimes requires that the number be in the phone book, even to block.

If the problem is not solved, try clear WhatsApp cache:

1. Go to Settings → Applications.
2. Find WhatsApp in the list and select it.
3. Click Memory → Clear cache.
4. Restart the application.

⚠️ Attention: On Samsung Galaxy s One UI 5.1 and below after clearing cache may require re-authorization via SMS. Make sure you have access to a SIM card with a number linked to WhatsApp.

5. How to completely delete traces of communication with a blocked contact

Blocking in WhatsApp does not automatically erase correspondence history. If you want delete all messages completelyincluding media files, do the following:

Steps to Samsung Galaxy:

1. Open a chat with a blocked contact.
2. Click on the three dots in the top menu and select More → Clear chat.
3. Select Delete all messages (including media files).
4. Confirm the action.
5. Return to the main menu WhatsApp, find the chat in the list, click long press on it and select Delete chat.

On Galaxy S22 Ultra and later, after deleting a chat, files (photos, videos, voice messages) can remain in the phone memory. To erase them completely:

• 📁 Go to My files → Device memory → WhatsApp → Media.
• 🔍 Find folders with the contact name or number.
• 🗑️ Delete them manually.

6. What to do if blocking does not work: 5 solutions

Sometimes after blocking, messages continue to arrive, or the contact may call you. This is a common problem due to conflicts between Samsung Galaxy due to conflicts between One UI and WhatsApp. Here's what to do: Method 1: Force stop WhatsApp stop

Method 1: Force stop WhatsApp

• Go to Settings → Applications → WhatsApp.
• Click Forced stop.
• Start the messenger again.

Method 2: Checking permissions

On Galaxy A73 and other models WhatsApp may not block contacts due to lack of permissions:

• 📋 Go to Settings → Applications → WhatsApp → Permissions Make sure permissions for Storage are enabled data-i="241">🔄 Restart the application. Settings → Applications → WhatsApp → Permissions.
• 🔓 Make sure permissions are enabled Contact And Storage.
• 🔄 Restart the application.

Method 3: Using WhatsApp Web

If blocking on your phone does not work, try blocking the contact via the web version:

1. Open web.whatsapp.com on computer.
2. Scan the QR code from your phone.
3. Find a chat with a contact, click on his name and select Block.

Method 4: Reset WhatsApp settings

On Galaxy S21 FE and similar models, resetting the messenger settings helps:

• 📱 Go to WhatsApp Settings → Chat → Backup → Reset Chat Settings.
• ⚠️ This will not delete messages, but it will reset notification and privacy settings.

Method 5: Reinstalling WhatsApp

A last resort if all else fails:

1. Create a backup of your chats in Settings → Chat → Backup.
2. Delete WhatsApp via Settings → Applications.
3. Install the messenger again from Galaxy Store or Google Play.
4. Restore chats from backup copies.

⚠️ Attention: On Samsung Galaxy s Android 14 after reinstallation WhatsApp you may need to re-configure permissions for contacts and storage. Without this, the blocking will not work.

7. How to unblock a contact and what happens after that

If you change your mind or block a user by mistake, you can unblock him at any time. On Samsung Galaxy it is done like this:

Steps:

1. Open WhatsApp and go to Settings → Account → Privacy → Blocked contacts.
2. Find a contact in the list and click long press on it.
3. Select Unblock.

After unblocking:

• ✅ The contact will be able to write and call you again.
• ✅ You will see all the messages that he sent to you during the blocking (they will arrive immediately after unblocking).
• ❌ Correspondence history will not be restored, if you deleted.
• 🔄 Statuses and profile changes will become visible to the contact again.

On Galaxy Z Fold4 and other folding models Samsung after unlocking, a notification may appear: "You have unblocked [name]. Now this contact can write and call you". However, the first messages from him may arrive with a delay of up to 5 minutes - this is normal.

8. Frequently asked questions about blocking in WhatsApp on Samsung

🔍 Is it possible to block a contact without saving it to the phone book?

Yes, but with reservations. On Samsung Galaxy to do this you need:

1. Open a chat with the user in WhatsApp (even if it is not saved).
2. Click on his name/number at the top of the screen.
3. Select Block in the profile menu.

If there is no chat, you will have to first save the number to contacts, block, and then delete the contact from the phone book.

📵 Will the contact know that did I block him?

WhatsApp does not send notifications about blocking, but the user may suspect this based on indirect signs:

• Messages are not delivered (one gray tick remains).
• Calls are dropped automatically.
• Your status "online" and the time of the last visit are not displayed.

However, if you are in a common group, he will still see your messages there.

🔄 What happens if you block a contact and then unblock it again?

After unblocking:

• The contact will be able to write and call you.
• All messages sent to them during the blocking will be sent to you immediately (if they have not expired).
• The correspondence history will not be restored if you deleted it.

On Samsung Galaxy s One UI 6.0 The first messages after unlocking may arrive with a delay of up to 10 minutes.

📱 Why do messages continue to arrive after blocking?

This is a typical problem on Samsung Galaxy, associated with:

• Application cache — clear it in the phone settings.
• Version conflict - update WhatsApp to the latest version.
• Notification settings - check if notifications are disabled for messenger.
• WhatsApp Business — if the contact has a business account, blocking in a regular one WhatsApp does not work.

If all else fails, try blocking the contact via WhatsApp Web.

🆔 Is it possible to block an unknown number that wrote to me?

Yes, but for this you need:

1. Open a message from an unknown number in WhatsApp.
2. Click on the number at the top of the screen.
3. Select Block.

On Samsung Galaxy s Android 13/14 after blocking an unknown number, the system may offer to add it to the phone's blacklist - this blocks not only WhatsAppbut also regular calls/SMS.