Continuous SMS from scammers and spam mailings continue to arrive on the Android smartphone even after blocking the number for calls, since the standard function often does not block the text message channel. This is a critical vulnerability due to which annoying notifications and potential threats to the security of personal data persist, requiring the user to apply deeper system settings to completely isolate the unwanted subscriber.
In this detailed guide, we will analyze all available protection methods. You will learn how to configure black list through the system menu, using the capabilities of Google Phone, and also consider third-party solutions for advanced filtering. It is important to understand that interfaces may differ depending on your device model and firmware version.
We will pay special attention to the nuances of telecom operators and hidden settings that are often forgotten. The correct security configuration will allow you to forget about intrusive communication and focus on important matters. Read carefully, as some steps require attention to menu details.
Standard blocking capabilities in the Phone application
The easiest and fastest way to stop communicating with an unwanted interlocutor is to use the built-in functionality of the calling application. In most modern smartphones, especially those that use pure Android or the shell from Google, this function is integrated directly into the dialing interface. You do not need to download additional software for basic protection.
First, open the application Phone and go to the tab with call history or contacts. Find the number that is causing you trouble. Typically, a long press on a name or number in the list is enough for a context menu to appear. In this menu, select item Block or Block/send spam. After confirming the action, the system will automatically add the number to the exception.
However, there is an important nuance. Standard blocking in some firmware versions may be limited to incoming calls only, skipping SMS messages. To check and change this behavior, you need to go to the settings of the application itself. Click on the three dots in the corner of the screen, select Settings, then go to the Blocked numberssection. Here you will see a list of all added contacts and switches for blocking types.
⚠️ Attention: On devices from different manufacturers (Samsung, Xiaomi, Huawei), menu items may be called in different ways. If you do not find the option to block messages in this section, your manufacturer may have made it a separate “Messages” application.
Make sure that the switch next to the desired number is active not only for calls, but also for text messages. In some cases, the system offers an option Block messages from unknown numbersthat works as a global filter. Use it with caution so as not to miss an important notification from a courier or bank.
Setting up a black list through the Messages application
If the standard “Phone” application does not provide the necessary control over incoming text messages, you should turn to the application settings Messages. This is the second line of defense, which often turns out to be more effective against SMS mailings. The operating logic here is similar, but the settings are isolated from voice calls.
Open the SMS application and find the menu icon (three dots or profile icon). Go to section Settings and look for item Spam protection or Blacklist. In modern versions Google Messages this feature is often enabled by default and uses databases to automatically identify scammers. You can manually add a specific number to exceptions by clicking on the corresponding add button.
It is important to note that blocked messages are not deleted irrevocably. They are moved to a special folder Spam and blocked, which can be found in the main menu of the application. This is done so that you can periodically check the content in case the filter is falsely triggered. Regularly cleaning this folder will help free up space in the device memory.
- 📱 Check if the “Filter unknown senders” option is enabled in the privacy settings.
- 🔒 Make sure that the number is added specifically to the message blocking list, and not just calls.
- 🗑️ Periodically empty your spam folder, as it can take up storage space.
Some users are faced with a situation where messages from a blocked contact still arrive, but do not display notifications. This may be a feature of the telecom operator or a specific firmware setting. In this case, it is recommended to use a combination of methods: blocking on the phone and requesting blocking from the operator.
To quickly add a number to the blacklist from the text of the message, open the dialog, click on the three dots in the corner and select “Details” or “Contact Information”, then find the block button.
Using third-party applications for advanced protection
Standard tools Android are good, but sometimes their functionality is not enough to combat smart spammers who change numbers. Specialized applications such as Mr. Number, Call Blocker or Truecallercome to the rescue. These apps have their own databases, updated in real time by a community of users.
Installing such an application gives access to advanced filters. You can set up blocking by number mask (for example, all numbers starting with a specific area code), block hidden numbers or messages containing keywords. This is especially useful during massive attacks by spammers who use a pool of different numbers.
When you first launch the application, it will ask for permission to access calls and messages. This is a necessary step for filtering to work correctly. After setting up the rights, go to the Black list section and add the required contacts. Many applications also have a “Silent Mode” function, which does not reset the call, but simply does not make sounds or vibrations, creating the appearance that the phone is turned off.
| Application name | Main function | Availability of a free version | Feature |
|---|---|---|---|
| Truecaller | Identification and blocking | Yes (with advertising) | Huge database of spam numbers |
| Mr. Number | Flexible blocking rules | Yes | Blocking by region code |
| Calls Blacklist | Full contact isolation | Yes | Lightweight, without unnecessary functions |
| Should I Answer? | Call risk assessment | Yes | User reviews of the rooms |
You should remember that installing third-party software increases the load on the system and battery consumption. Choose apps with high ratings and a large number of downloads to avoid malware. Always check the permissions that the app asks for before installing.
Why do third-party applications sometimes not work?
Modern versions of Android (starting from 10 and above) strictly limit the access of third-party applications to calls and SMS for security purposes. For the application to work correctly, you need to assign it as the default application for calls and SMS in the system settings, or provide special access rights in the “Accessibility” menu.
Blocking through the settings of the SIM card and operator
If software methods do not provide a 100% guarantee, you can use the services of your cellular operator. Most large providers (MTS, Beeline, Megafon, Tele2) offer Antispam services or the ability to block numbers at the network level. This means that the call or message will not even reach your device.
To activate such protection, it is usually enough to send a short message USSD command or use the operator’s personal account. For example, the Black List service allows you to add up to several dozen numbers from which you do not want to receive communications. The advantage of this method is that it does not depend on the battery charge or whether the phone is turned on at all.
However, the network method has its drawbacks. First, this service is often paid or provided by subscription. Secondly, managing the list may be less convenient than on the smartphone itself. You will have to log into the operator's application each time or call support to add a new intruder.
⚠️ Attention: Operator services may have technical limitations. For example, blocking may not apply to service short numbers or messages from banks. Always check the terms of service in the official source or tariff plan.
To find out the current commands for your operator, enter the query “blacklist [Operator Name]” in your browser search. Usually these are combinations of the form *110*44# or similar. Don't forget to check your account balance before connecting paid options.
Blocking features in different versions of Android
The ecosystem Android is extremely fragmented, and what works on one device may not exist on another. Owners of smartphones from Samsung, Xiaomi, Huawei and other brands are faced with unique shells that change the standard behavior of the system. Understanding these differences is critical to successful setup.
On devices Samsung with the One UI shell, the path to settings is often through the contacts menu. Open a contact, click the three dots and select Block. There is a separate section in your phone settings Blocking numberswhere you can enable protection from unknown callers. Samsung also offers a Smart Anti-Spam feature that needs to be activated separately.
Users Xiaomi (MIUI) has a powerful built-in security tool. The application Security contains a section Blacklistthat allows you to flexibly configure rules. Here you can block everyone except contacts from your phone book, or create exceptions for certain groups. The MIUI interface often offers more detailed settings than pure Android.
- 📲 On Huawei and Honor, look for settings in the application
Phone Manager. - 🛡️ On pure Android (Pixel, Motorola) everything is concentrated in the Phone and Messages applications from Google.
- ⚙️ On older versions of Android (below 6.0), you may need to install a third-party application to fully block SMS.
If you recently updated the firmware, the menu location may have changed. Manufacturers are constantly redesigning interfaces to add new security features. If you cannot find the item you need, use the search inside your phone settings by entering the word “blocking” or “spam.”
There is no universal way for all phones. Always focus on the name of your manufacturer and the version of the interface, using the search in settings to save time.
What to do if the contact continues to send messages
Sometimes it happens that you have followed all the instructions, but messages from the blocked number still arrive. This may be due to the fact that the spammer uses different numbers, sends messages through Internet services (messengers) or bypasses blocking through operator gateways. In such cases, an integrated approach is required.
First of all, check whether messages are coming through messenger applications, such as Viber, WhatsApp or Telegram. Blocking a number in the phone book does not block your messenger account. You need to go to the settings of each application separately and block the user there. To do this, open the chat, click on the contact's name and select Block.
If the problem persists with regular SMS, the number may have been entered with an error (for example, without a country code or with an extra space). Remove the number from the blacklist and add it again, carefully checking the format. Also try rebooting your device to reset the network settings cache.
In extreme cases, when you are being stalked by a real stalker or scammer, technical measures alone may not be enough. Keep message screenshots and call history as evidence. Contact law enforcement if the threats are serious. Technical means of protection are the first line, but not a panacea for illegal actions.
☑️ Actions in case of repeated spam
Frequently asked questions (FAQ)
Does a blocked contact know that he is on the black list?
No, the system does not send any notifications to the blocked subscriber. To it, your calls will sound like “the subscriber is busy” or will simply be dropped after one ring, and the messages will have the status “sent”, although you will not receive them.
Can I read messages that came from a blocked number?
Yes, in most cases such messages are saved in a special “Spam” or “Blocked” folder inside the Messages application. You can go there at any time and look at the contents, but you will not receive a sound notification about a new message.
Blocking a number prevents him from writing to WhatsApp?
No, blocking in the phone book (black list) does not affect instant messengers. To prevent writing on WhatsApp, Viber or Telegram, you need to block the contact inside the messenger application itself.
What happens if I unblock a contact?
After unblocking, you will start receiving calls and messages from this number as usual. Messages that were sent to you during the blocking period and ended up in the Spam folder will remain there and will not be moved to your inbox automatically.
Is there a limit on the number of blocked numbers?
The built-in Android tools usually allow you to block hundreds of numbers without problems. Restrictions are most often imposed by the services of telecom operators (for example, up to 30 or 50 numbers in a paid blacklist).