The situation when the phone is ringing off the hook with calls from unfamiliar numbers offering loans, communication services or participation in surveys is familiar to almost every smartphone owner. This is not only annoying, but also distracts from important matters, and sometimes can become a threat to your finances. Fortunately, the mobile operating system Android provides powerful tools to combat unwanted calls, which are often hidden in the depths of the menu or require proper configuration.
In this article we will analyze in detail all the available protection methods: from built-in functions of Google and smartphone manufacturers to specific settings from telecom operators. You'll learn how to set up a blacklist, use Do Not Disturb mode, and which apps are really worth installing to forever forget about hard-selling.
Many users are unaware that the basic blocking feature is already activated by default, but does not work as effectively as we would like. Proper configuration of these settings can cut off up to 90% of junk traffic without the need to install additional software.
Using the identifier and filtering from Google
The easiest and most effective way to start the fight is to use the built-in opportunities Google Phone. This is a standard dialer that comes pre-installed on most modern smartphones, including models from Xiaomi, Motorola, Nokia and Pixel. The system uses a global database to identify suspicious numbers and automatically block them.
To activate, you need to go to the “Phone” application, click on the three dots in the upper right corner and select “Settings”. Next, you should find the “Caller ID and Spam” section and make sure that the “Show Caller ID and Spam” and “Filter Spam Calls” switches are in the active position. If the “Filter spam calls” feature is enabled, the phone simply will not ring when it detects a number on the Google blacklist, and the call will appear in the log as missed.
However, it is worth remembering that the database Google is not perfect. New scam numbers may appear faster than they are included in the registry. However, this is the first line of defense, which does not require the installation of third-party apps and saves battery power.
Turn on the "Notify about spam" option so that the phone vibrates or shows an alert even when a call is blocked - this way you will know that the filter has worked.
It is important to note that on smartphones Samsung or Huawei the dialer's own shells can be used. The setup principle is similar, but the path to the menu may differ: look for the “Blocking numbers” or “Antispam” section in the general settings of the device.
Setting the “Do not disturb” mode for complete silence
If spam attacks you at especially important moments, for example, during a meeting or rest, the best solution would be the mode Do Not Disturb (Do Not Disturb). Unlike simple blocking, this mode allows you to create flexible rules that allow calls only from selected contacts.
Go to Settings → Sound and vibration → Do not disturb. Here you can configure the schedule for the mode or enable it manually. The key point is the “Allowed calls” or “Who can call” section. Select the Contacts Only or Favorite Contacts option. In this case, any call from an unfamiliar number will be automatically rejected by the system, and the phone screen will remain black and silent.
⚠️ Attention: When you activate the "Do Not Disturb" mode with a restriction to "Favorites", you may miss an important call from a courier, doctor or delivery service whose numbers are not yet saved in your phone book. Use this method with caution during the daytime.
Additionally, you can set up repeat calls. If the same number calls twice within 15 minutes, the system will skip the second call, considering it an emergency. This is a compromise solution that allows you to weed out one-time spam, but stay in touch in case of real need.
Manual blocking and blacklisting through settings
When automatic filters fail, you have to take personal control of the situation. Manually adding numbers to blacklist is a labor-intensive method, but it guarantees that a particular offender will not get through again. This is especially true for persistent debt collectors or specific fraudulent schemes.
The blocking procedure is usually performed directly from the call log. Press and hold your finger on the unwanted number, then select Block or Add to Blacklist. In some shells, for example MIUI from Xiaomi, there is an extended blocking menu where you can add entire ranges of numbers or hide notifications about blocked calls completely.
For more advanced users, it is possible to block unknown numbers that hide their ID. In the blocking settings there is often an option “Block unknown numbers” or “Block hidden numbers”. Activating this feature will prevent calls from those who use special services to spoof numbers, but can also block calls from organizations using old equipment.
☑️ Checking blocking settings
Do not forget to periodically clean the black list. Sometimes the numbers you need get there by mistake, and you may wonder why the subscriber can’t reach you. Regular audit of the list of blocked contacts is part of digital hygiene.
Effectiveness of blocking applications
If the built-in tools are not enough, specialized applications come to the rescue. The market leaders are Yandex.Security, Kaspersky Who Calls and Truecaller. These apps use their own huge databases, replenished by users themselves, which allows them to identify spam even more effectively than solutions from Google.
The main advantage of such applications is the ability to see the name of the organization or the type of fraud even before you pick up the phone. For example, “Probable spam: Bank” or “Poll: MTS” may appear on the screen. This allows you to make an informed decision: answer to send them, or drop the call.
| App | Pros | Cons | Features |
|---|---|---|---|
| Yandex.Security | Excellent database for the Russian Federation, no advertising | Requires many access rights | Integration with the Yandex ecosystem |
| Truecaller | Global database, search by name | Lots of advertising in the free version | Works better abroad |
| Kaspersky Who Calls | Reliability, minimum settings | Paid functions in premium | Clear categorization of calls |
Installing a third-party blocker requires granting permissions to access contacts and the call log. This is necessary for correct operation, but raises questions among some users Regarding privacy. Before installation, carefully read the developer's privacy policy.
Why do applications ask for access to contacts?
Applications need access to your phone book in order to check incoming numbers with your records and not mark your friends as spam. In addition, they can (with your consent) anonymously upload your contacts to the cloud to improve the overall database, although this can often be disabled in the settings.
Blocking services from telecom operators
Don't forget that fighting spam is also possible at the network level. Large operators (“Big Four” in the Russian Federation) offer their own call filtering services. They work independently of your smartphone and are effective even on feature phones or when the device is turned off (spam will not pass through the operator's gateway).
Antispam service from MTS, "Spam protection" from MegaFon, similar services from Beeline i Tele2 usually inexpensive (about 2-3 rubles per day) or provided free of charge within certain tariffs. The connection is made through USSD commands, a personal account or the operator’s mobile application.
⚠️ Attention: Tariffs, names of services and connection conditions from telecom operators may change. Always check the current cost and activation methods in the official application of your operator or on the website in your personal account.
The advantage of operator solutions is that they do not drain the phone’s battery, since the number is analyzed on the company’s servers. However, their databases may be less detailed than crowdsourcing applications, and they may miss new scams.
Combining protection from the operator and the built-in Google filter gives the maximum result, covering the vulnerabilities of each method separately.
Radical measures and leak prevention
If no methods help and spam becomes unbearable, you can take radical steps. One of them is changing your number. This is a last resort and requires notification of all contacts, but it guarantees a clean start. Before doing this, it is worth analyzing where exactly your number could be “lit up.”
Often the reason lies in participation in dubious promotions, registration on unverified sites, or installation of applications with a dubious reputation that drain your contact database. Avoid entering your real number on sites that promise “winnings” or access to restricted content.
It is also recommended to create a second number or use a virtual number for registrations in delivery services, online stores and message boards. Services like Zvonok or virtual numbers from operators are popular in Russia. This will allow you to keep the main room clean and use it only for close and important matters.
Remember that complete isolation from the outside world is impossible, but reducing the noise level is quite possible. Regularly update blocking lists, stay tuned for news about new fraud schemes and don’t be afraid to block persistent callers.
If you receive calls from numbers starting with +7 (800), know that these are often free lines for customers, but they are the ones that scammers and spammers like to use because of the low cost of rent. Be vigilant.
Is it possible to block a call if the number is hidden (the identifier shows “Unknown”)?
Yes, this is possible. In the Phone application settings, find the “Call Blocking” or “Black List” option. There should be an option to “Block unknown numbers” or “Block hidden numbers”. Activating this item will reject any call where the subscriber ID is not transmitted.
Will SMS be received from a blocked number?
By default, call blocking does not block SMS messages. The spammer can continue to send text messages. To stop them, you need to add the number to the blacklist specifically for SMS (in the settings of the Messages application) or use the Spam Filter function in the messenger settings.
Will the spammer know that I blocked him?
No, the subscriber will not receive any special notification about the blocking. For him, the call will look like a normal one: the beeps will continue until the call is forwarded to voicemail or until the timeout expires. He may think that you are simply not answering the phone.
Will installing a blocker application slow down your phone?
Modern applications are optimized and consume minimal resources in the background. However, on very old devices with a small amount of RAM (less than 2 GB), any unnecessary application can affect the speed of operation. In such cases, it is better to use the built-in Android tools or operator services.
What to do if you blocked an important number by mistake?
Go to the settings of the “Phone” application, find the “Blocked numbers” or “Black list” section. Find the desired contact there and click on the unlock icon (usually a cross or an open lock icon). After this, calls from this number will go through again.