How to block unfamiliar numbers from writing on WhatsApp on Android: a complete guide

Every user WhatsApp sooner or later encounters annoying messages from unfamiliar numbers: these can be spam mailings, scammers, random contacts or former acquaintances with whom you do not want to communicate. On Androiddevices there are several ways to limit such messages - from basic privacy settings to hidden messenger functions. But most users only use blocking of individual contacts, unaware of more effective methods.

In this article we will examine 7 proven methodshow to prevent strangers from writing to WhatsApp : from filtering messages to radical measures like changing the number or using alternative clients. We will pay special attention to the settings that work even if the spammer’s number is not saved in your phone book. All instructions are current for the latest versions WhatsApp (including WhatsApp Business) and tested on Android 12–14.

Before moving on to the instructions, it is important to understand: WhatsApp does not have a built-in function to completely block messages from all unfamiliar numbers (as opposed to Telegram with its "Confidentiality"). However, a combination of several methods can achieve a similar result. Let's start with the simplest - and gradually reach advanced solutions.

1. Blocking individual numbers on WhatsApp

The most obvious way is to block a specific number directly in the chat. This won't prevent messages from other strangers, but it will help get rid of already annoying contacts. Here's how to do it:

1. Open a dialogue with the unwanted contact in WhatsApp.
2. Tap on the three-dot menu (⋮) in the upper right corner.
3. Select More → Block (or Block in the English version).
4. Confirm the action by clicking Block.

After blocking, contact:

• 🚫 Will not be able to send you messages (they will be marked as "delivered", but you will not see them).
• 📞 Will not be able to call via WhatsApp (the call will simply be dropped).
• 🔄 Will not see your "online" status or changes in your profile.
• 📌 Will not be able to add you to group chats (unless another participant adds it).

Important: blocking only applies within WhatsApp. The contact will still be able to call or text your number through the standard application Phone.

⚠️ Attention: If you block a number and then unblock it, all previous messages from this contact will not be restored will be permanently deleted from the chat.

2. Privacy settings: who can see your profile

Many spammers find victims through public profiles. If your account WhatsApp is visible to everyone, the likelihood of receiving a message from a stranger increases. Limit access to your data:

1. Open WhatsApp and go to ⋮ → Settings → Account → Privacy.
2. Customize each setting:
   • Last visit: select Nobody or My contacts.
   • Photo profile: set My contacts.
   • Information: limit to My contacts.
   • Status: select My contacts or My contacts, except....

These settings do not block messages directly, but make your profile less visible to spammers and random people. For example, if a fraudster does not see your photo or status, he is less likely to decide to write to you.

Parameter	Recommended value	What it gives
Last seen	Nobody	Hides your online time from everyone, including contacts.
Profile photo	My contacts	Prevents spambots from downloading your avatar.
Information	My contacts	Hides the profile description from strangers.
Status	My contacts, except...	Allows you to share stories only with trusted people.

⚠️ Attention: If you use WhatsApp Business, some privacy settings may differ. For example, business accounts must display the last visit time for clients.

3. Filtering messages from unknown numbers

WhatsApp has a hidden function for filtering messages from unsaved contacts. It doesn't block them completely, but sends them to a separate folder so they don't clog up the main chat list. Here's how to enable it:

1. Go to Settings → Notifications → Messages from strangers.
2. Activate the switch Filter strangers (or Filter unknown senders).

After this, all messages from numbers that are not in your phone book will fall into a special section Strangers (accessible through the arrow at the top in the list of chats). You can view them manually without receiving notifications.

The advantages of this. method:

• 📵 There are no annoying notifications from spammers.
• 🔍 Important messages (for example, from delivery services) will not be lost - they can be found in the folder.
• 🚀 Does not require blocking each number manually.

Disadvantage: the filter does not work for group chats. If you are added to a group with strangers, messages from there will come as usual.

4. Using two-step authentication

Two-step the verification does not block messages, but protects your account from hacking - and this is one of the reasons why strangers may write to you (for example, if your number is included in the database of stolen accounts. Turn it on like this:

1. Open Settings → Account → Two-step verification.
2. Click Enable and create 6-digit PIN code (do not use your date of birth!).
3. Add a backup email for recovery access.

Now, even if a fraudster receives an SMS with a confirmation code (for example, through a data leak from the operator), he will not be able to log into your account without a PIN code.

Why is this important for blocking spam:

• 🔒 Closed accounts are less likely to be included in mailing lists.
• 🛡️ Fraudsters will not be able to use your number to send spam to your contacts.
• 📱 The risk of being included in the "grey" lists of mailers is reduced.

⚠️ Attention: If you forget your PIN code and lose access to your backup email, you will be able to restore your account impossible — WhatsApp does not provide support in such cases.

5. Changing your phone number without losing chats

If spam has become unbearable, a radical solution is to change your phone number. WhatsApp allows you to do this without losing your correspondence history. Here's how:

1. Get a new number from the operator (for example, through the "Change number" service or purchasing a new SIM).
2. In WhatsApp go to Settings → Account → Change number.
3. Enter the old and new number, confirm via SMS.
4. Select who to notify about the change of number (you can skip this step).

After the change:

• 📱 All your chats and media files will remain in place.
• 🔄 Contacts who wrote to the old number will not be able to find you using the new one (unless you notify them manually).
• 🚫 Spammers who knew your old number will lose access to you.

Disadvantages of this method:

• ❌ You will have to update your number in all services (banks, social networks, etc.).
• ❌ Some contacts may not recognize you and mistake you for a scammer.

What to do with the old number?

If you no longer plan to use it, it is recommended:

1. Disable it from your operator after 1-2 months (so that all services have time to update).
2. Delete the WhatsApp account linked to the old number (via Settings → Account → Delete account).
3. Check whether it is linked to other instant messengers (Telegram, Viber).

This will prevent fraudsters from using the number to register new accounts.

6. Alternative WhatsApp clients with advanced functions

Official WhatsApp does not allow you to completely block messages from strangers, but there are unofficial clients (mods) with advanced privacy settings. For example:

• GBWhatsApp — allows you to block messages from all unsaved contacts, hide read receipts and much more.
• FMWhatsApp —has a built-in “incognito mode” and filters for spam.
• YoWhatsApp (YoWA) —supports blocking by keywords in messages.

How to install:

1. Download the APK file from the official website of the mod (for example, gbwhatsapp.com).
2. Allow installation from unknown sources in the settings Android (Settings → Security → Unknown sources).
3. Install the application and log in with your number.
4. In the privacy settings, activate the option Block strangers or Anti-Spam.

Warnings:

• ⚠️ These clients are unofficial - WhatsApp may block your account for using them.
• ⚠️ There is no guarantee of data security (risk of correspondence leakage).
• ⚠️ Updates come less often than in the official application.

7. Additional measures: from the operator to third-party applications

If spam comes not only through WhatsApp, but also through SMS/calls, it is worth using tools at the operator level or Android:

A. data-i="204">Most Russian operators have anti-spam services:

Most Russian operators have anti-spam services:

• MTS: "Antispam" service (free for subscribers). Activated via *111*25#.
• Beeline: "Antispam" (connected via USSD command *110*789#).
• MegaFon: "Protection from fraudsters" (available in your personal account).
• Tele2: "Stop Spam" (free for tariffs with a subscription fee).

B. Third-party blocking applications

Applications like Truecaller or Hiya can filter not only calls, but also SMS from spammers. Some of them are integrated with WhatsApp via notifications:

• 📱 Truecaller: detects spam numbers in the database and blocks them automatically.
• 🛡️ Hiya: has a "Black List" function for manual blocking.
• 🔍 Should I Answer? - analyzes incoming calls and messages based on reviews from other users.

B. Setting up Android to block notifications

If you don’t want to completely block numbers, but don’t want to see notifications from them:

1. Press the notification from WhatsApp in the curtain.
2. Select Disable notifications or Customize.
3. Disable sounds and banners for chats with strangers.

⚠️ Attention: Operator services and third-party applications may conflict with settings WhatsApp. For example, if you block a number through Truecaller, but not in the messenger itself, the spammer will still be able to write to you in WhatsApp (you just won’t receive notifications).

FAQ: Frequently asked questions about blocking strangers on WhatsApp

Is it possible to block all strangers at once without adding them to a blacklist?

No, in official WhatsApp there is no such function. But you can:

• Enable filtering of messages from strangers (they will end up in a separate folder).
• Use unofficial clients like GBWhatsApp with the option to block all unsaved contacts.
• Change phone number if the spam has become unbearable.

If I block a number on WhatsApp, will he know about it?

No, WhatsApp does not notify users about the blocking However, the spammer may suspect this if:

• His messages always remain with one tick (unread).
• He does not see your "online" status or changes in your profile.
• Calls through WhatsApp are immediately reset.

But direct notifications like "You blocked" does not exist.

Why do strangers write to me asking me to confirm the code from SMS?

This is a classic fraud scheme: an attacker is trying to register WhatsApp to your number, but he needs the confirmation code that comes to you in SMS. If you send him this code:

• He will gain access to your account.
• Can send spam to your contacts.
• Change the linked number and you will lose access.

Never share SMS codes with strangers If you have already been hacked, immediately contact support WhatsApp via form Settings → Help → Contact us.

How to restore access if I was blocked for using GBWhatsApp?

If your account is banned for using unofficial client:

1. Delete the mod (GBWhatsApp, FMWhatsApp etc.).
2. Install the official one WhatsApp from Google Play.
3. Login with your number - the system may ask you to confirm that you will no longer use the modified ones version.
4. If the blocking is not removed, wait 24-48 hours and try again.

As a last resort, create a new account with a different number.

Is it possible to return messages from a blocked contact?

No after blocking and deleting. chat, all messages from this number are permanently deleted. If you unblock a contact, the correspondence history will not be restored - a new chat will begin. To avoid losing important messages:

• First, export the chat via as a text file). ⋮ → Export chat (will be saved as a text file).
• Or make a backup via Settings → Chat → Backup.