A lot of advertising messages, notifications about unexpected winnings and strange mailings from banks where you do not have an account - almost every smartphone owner faces this problem. Spam SMS on Android is not just annoying, it can hide a real threat to the security of your personal data and finances. Fraudsters are constantly improving their mailing methods, masquerading as official services, which forces users to be extremely careful.
Fortunately, the modern Android operating system has powerful built-in tools for filtering unwanted content, and third-party developers offer effective solutions for additional protection. In this article, we will look in detail at how to set up spam blocking, which settings should be changed first, and what to do if standard methods do not help. You will learn to distinguish dangerous messages from simply annoying ones and will be able to return silence to your phone.
Ignoring the problem may lead to you accidentally clicking on a malicious link or transferring confidential data to attackers. Therefore, it is important not just to hide notifications, but to configure the system so that spam does not reach your attention at all. We will look at both software methods and interaction with telecom operators to completely clear the incoming stream.
Built-in blocking capabilities on Android
The first step in the fight against unwanted messages should be to use the standard functions of your operating system. Google developers and smartphone manufacturers such as Samsung, Xiaomi and Realmehave implemented effective filters in their shells. They are usually found in the Messages app, which is installed by default. To access the settings, you need to open the application and click on the three dots or the profile icon in the upper corner of the screen.
In the menu that opens, you should find the section Spam and protection settings or Blocking numbers. Here you can activate the Filter Spam switch, which automatically moves suspicious messages to a separate folder without alerting you with audio notifications. The system's algorithms analyze the contents of the text and the sender's number, comparing them with a global database of known scammers.
However, you should understand that the built-in filter is not ideal. It can miss new deception schemes or, conversely, block important notifications from delivery services. Check your spam folder regularly to make sure nothing important is in there. Also in this section, you can manually add a specific number to the blacklist if it continues to bother you.
⚠️ Attention: The menu interface may vary depending on the version of Android and the model of your device. If you do not find these items, try searching inside your phone settings for “spam” or “blocking.”
Use of third-party blocker applications
If standard tools are not enough, specialized applications from the store come to the rescue. Google Play. They have more flexible settings and extensive databases that are updated by a community of users in real time. The leaders in this category are Truecaller, Call Blocker and Kaspersky Who Calls. These apps can detect not only spam, but also the names of organizations calling you.
When installing such an application, you will need to grant it the rights to read SMS and manage calls. This is necessary so that the app can intercept incoming messages and compare them with the database before they are displayed on the screen. Once configured, you can choose the level of filtering aggression: from soft blocking only known spammers to a hard mode that allows only contacts from the phone book.
Free versions often show ads or have limits on the number of numbers blocked. However, even the basic functionality of free versions usually copes with the bulk of advertising mailings better than standard system tools.
☑️ Setting up a blocker
Why do applications require many rights?
Blocking applications work in the background and must have access to all incoming calls and messages in order to have time to analyze and block them before the standard phone interface works. Without these rights, they will be just a list of numbers, and not an active filter.
Manual blocking and blacklist
The simplest, but most time-consuming method is to manually add annoying numbers to the blacklist. This method is effective against specific senders who do not change their numbers, such as local delivery services or intrusive lenders. In most Android smartphones, this function is available directly from the message or call log.
To do this, you need to open a dialogue with the unwanted sender, click on the menu (three dots) and select Block number or Add to blacklist. After this, all messages from this number will be silently rejected by the system. You will not receive notifications, and the messages themselves may be saved in a separate blocked log or deleted automatically depending on the settings.
The disadvantage of this method is that spammers often use a pool of numbers by changing the last digit or operator code. Blocking them one by one can take a long time. However, to combat personal harassment or specific companies, this method remains the most reliable and does not require the installation of unnecessary software.
| Blocking method | Efficiency | Complexity of setup | Risk of false positives |
|---|---|---|---|
| Built-in Android filter | Medium | Low | Low |
| Third-party applications | High | Average | Medium |
| Manual blacklist | Low (for mass spam) | High | None |
| Operator services | High | Low | Low |
Periodically clear the black list of old numbers. Spammers often abandon old numbers, and blocking can be a nuisance if the number is resold to another person who really needs it.
Carrier anti-spam services
Large mobile operators such as MTS, Beeline, MegaFon and Tele2offer their own protection services subscribers from spam and fraud. These services work at the network level, filtering traffic before it even reaches your phone. This means that you won’t even see a notification about a blocked message.
You can activate such a service through the operator’s personal application, a USSD command or a call to the support service. For example, MTS has the Antispam service, Beeline has the Beeline.Antispam service. Often the basic version of the service is free, and the advanced version, which allows you to configure stop words or sender categories, costs little money per month.
The advantage of operator solutions is that they do not consume your smartphone’s battery and do not require installation of applications. Filtering takes place on the company's servers. However, it is worth considering that the operator cannot always recognize a new type of fraud, and sometimes important SMS from banks may be blocked if their pattern seems suspicious.
⚠️ Attention: The terms of service and their cost may be changed by operators without prior notice. It is recommended to check the current tariffs and settings in the official application of your telecom operator before connecting.
The combination of the built-in filter of the phone and the operator's services provides maximum protection, covering the weak points of each method separately.
How to complain about spam and scammers
If you are faced with a frank fraud or aggressive advertising, you should not remain silent. The complaint helps update antivirus and operator databases, protecting other users. Google's Messages app has a built-in reporting feature. Open a suspicious message, click on the three dots and select Report spam.
This action will send the message text and sender number to Google for analysis. If the message is determined to be malicious, the number will be added to the global blacklist and Android users around the world will be protected from it. You can also send a screenshot of the message to special hotlines or to the security service of your bank if the spam is masquerading as a financial institution.
In some countries there are government registries where you can send a complaint about illegal advertising. In Russia, for example, you can contact the FAS (Federal Antimonopoly Service) through an online reception if an advertisement violates the advertising law. This is a long process, but it is effective against large companies that violate the mailing rules.
- 📱 Use the “Report” button directly in the message application to quickly send data to analysts.
- 🏦 Send screenshots of phishing SMS to the bank on behalf of which they came to block the domain.
- ⚖️ Save evidence of mailing (screenshots, time of receipt) for a possible complaint to regulatory authorities.
Prevention: how to avoid becoming a victim of spam
The best protection against spam is prevention. Often we ourselves transfer our phone numbers to marketers’ databases by registering on dubious sites or participating in lotteries. Try not to indicate your main number on resources with a low reputation. For registrations, use virtual numbers or a second SIM card.
Never follow links from SMS from unknown senders, even if the message looks very urgent or attractive. Phrases like “Your card is blocked” or “You have won a prize” are classic scam triggers. Clicking on such a link may lead to a phishing site that will steal your data or download a virus to your phone.
It is also recommended to disable message previews on the lock screen. This won't remove spam, but it will protect you from accidentally clicking on a link and hide the contents of messages from prying eyes while your phone is on the table. You can set this up in the section Settings → Notifications → Messages.
What is a virtual number?
This is a temporary phone number that can be obtained through special services or applications. It received SMS and calls, but is not tied to your physical SIM card. Ideal for registering on sites, so as not to clog up the main number with spam.
Is it possible to completely get rid of all SMS spam?
It is almost impossible to completely get rid of 100%, since mailing technologies are constantly evolving. However, an integrated approach (operator + application + caution) reduces the amount of spam to a minimum, making it invisible.
Is it safe to install call blocking applications?
Yes, if you download them from the official Google Play store and choose trusted, highly rated developers. Avoid dubious apk files from the Internet.
Why do I receive SMS from other banks?
Most likely, your phone number previously belonged to another person who did not inform the bank about the change of number, or scammers use number substitution (spoofing) to look like a bank.
What to do if Did I accidentally click on a link from a spam SMS?
Immediately turn off the Internet, check your phone with antivirus, change passwords for important accounts and contact the bank if you entered card details. It's better to be safe.
Do iPhones block spam just as well?
iPhones also have built-in filtering, but it works a little differently. Effective protection on iOS often requires third-party applications that need to be activated in the phone settings in the “Messages” section.