How to disable calls from hidden numbers on Xiaomi

The problem of anonymous calls has become a real scourge for smartphone users around the world, and owners of Xiaomi devices are no exception. Every day thousands of subscribers face intrusive offers, fraudulent schemes or simply silent horns when the screen displays the words “Hidden number” or “Unknown”. In today’s digital environment, ignoring such calls often does not help, as spammers change tactics, and automatic robots can make hundreds of calls per minute, occupying the line and interfering with normal life.

Fortunately, Android, in conjunction with the proprietary shell MIUI or the new HyperOS, offers powerful tools to filter incoming traffic. However, standard settings are often hidden in the depths of the menu or not as obvious as the user would like. Understanding the mechanisms of telephony and knowing specific locking algorithms allows you to effectively cut off unwanted contacts, while retaining the ability to take important calls from real people.

In this guide, we will take a look at all the available protection options, from built-in smartphone features to carrier services, how to set up the Blacklist for anonymous users, which USSD codes to activate and why you need to contact the salon in some cases. Competent settings will not only restore your peace of mind, but also protect you from potential financial losses associated with the actions of phone fraudsters.

Use of the built-in anτισpam MIUI filter

The first and most logical step for Xiaomi owner is to activate the built-in security guard, which is already integrated into the system of “callers”. Unlike many other manufacturers, the Chinese giant provides native functionality to block not only specific numbers, but also entire categories of calls, including hidden ones. This method does not require the installation of third-party software and works at the system level, which ensures minimal battery consumption.

To access the necessary settings, you need to open the standard Phone application and go to the call management menu. The interface may vary slightly depending on the shell version, but the logic remains the same. It is important to note that in some regions (for example, in the European version of firmware), the functionality may be limited by legal regulations, so the availability of certain options is worth checking individually.

Inside the spam protection menu, you need to find a point that filters unknown subscribers, and the system allows you to flexibly adjust the response to such calls, from a quiet reset to a full lock with a busy signal sent, activating this feature instantly stops calls, where the number detector does not transmit subscriber data.

It is worth remembering that aggressive filtering can have side effects: Some organizations, such as banks, hospitals or delivery services, sometimes use equipment that hides the outgoing call number for security reasons or because of the peculiarities of setting up the PBX. Locking all hidden numbers can lead to the fact that you miss a really important call from the courier or doctor.

Setup of lock through the system menu

If you don't think the automatic filter is flexible enough, you can use the deeper settings of the system application, which gives you complete control over which calls to be rejected, and in modern versions of MIUI and HyperOS, the contact algorithms have been redesigned, and now lock management is brought to a separate, more intuitive interface.

To get to the menu, open your smartphone's Settings, scroll down to the Apps section, and select System Apps. Find Phone. That's where the key switches that control the device's behavior when you call are hidden. Notice the tab or section called "Block" or "Antispam."

In the window that opens, you'll see a list of rules, and you'll need to find an option that sounds something like "Block Unknown Numbers" or "Block Hidden Numbers." Once you activate the slider, the system will automatically reject calls that don't have an ID, which is the most reliable software solution to the problem without using third-party services.

⚠️ Warning: Once hard filtering is enabled, be sure to check if you have accidentally blocked important service numbers.Some bank confirmation services use hidden numbers for feedback.

Additionally, you can manually configure Blacklist on this menu. If you encounter a specific scammer who has changed his SIM card but keeps calling, adding his new number to the blacklist will take a few seconds. Xiaomi's system also allows you to import unwanted contact lists from cloud databases, which greatly improves the effectiveness of protection.

Use of the USSD-operator codes and commands

Beyond the settings of the smartphone itself, there are locking methods that work on the carrier side, which means that the call will be cut off even before it reaches your device, which saves battery power and does not create even a short-term horn. The Big Four operators in Russia and CIS provide various services that can be activated with the help of the service. USSD-request.

There is no universal code for all operators, as each provider uses its own encryption. However, the principle of operation is the same: you send a special combination of numbers, and the network reconfigures the routing of your incoming calls. Antispam or Unknown Number Block often requires confirmation via SMS or call to support.

Below is a table with the current codes for major mobile operators. Please note that some services may be paid or provided only under certain tariff plans.

Use of the USSD-It's a quick way to do code, but it has its limitations, for example, by activating a complete ban on hidden numbers coming from an operator, you may lose the ability to receive calls from overseas or from corporate customers whose PBX does not transmit. ID. It is important to know: disabling the service through USSD Often requires the introduction of another combination, which is best preserved immediately after activation.

Application of third-party applications for filtering

Xiaomi’s built-in tools are good, but they don’t update spam databases as often as they do in specialized apps. Third-party developers have built powerful tools that use crowdsourcing to identify callers. If even one user tags a number as spam, the entire database is updated instantly.

One of the most popular solutions is the Truecaller app or its counterparts, such as Getcontact or Yandex.C Spectr. These programs require extensive permissions, including access to the phone book and call history, which raises questions about privacy among some users, but the effectiveness of such applications in combating hidden and changed numbers often exceeds the standard solutions.

To install and configure, follow the algorithm: download the application from Google Play, grant the necessary access rights (this is critical for the blocker to work), and enable the “Block Hidden Numbers” function in the settings of the application itself, and then the system will analyze each incoming call through its database.

It's worth noting that some antiviruses, like Kaspersky or Dr.Web, also have spam protection modules. If you already have an antivirus installed on Xiaomi, check its settings - you may not need a separate application for calls, which will save the performance of the smartphone and not overload RAM with unnecessary processes.

Do Not Disturb as a Temporary Solution

In situations where absolute silence is required and the blocker settings seem too complex or insufficient, you can use Do Not Disturb, a mode built into Android that allows you to create a whitelist of contacts, calls from which will pass, and all others, including hidden numbers, will be blocked.

You can activate this mode through the Quick Access Panel (notification curtain) or in the Sound and Vibration settings, and the main advantage of the method is that you can fine-tune your schedule, so that at night or during meetings only calls from Favorites are allowed, and all anonymous calls are ignored.

However, this method is more of a temporary measure than a permanent solution: it requires manual activation and deactivation, which can be inconvenient in everyday life, and there is a risk of missing an emergency call if you forgot to add an important number to the exception list.

⚠️ Warning: In Do Not Disturb mode, alarms usually continue to work, but make sure that the settings for repeating events do not get lost after the device restarts.

This mode is especially relevant at night or during important meetings, when the likelihood of a call from a live person (not a robot) is minimal and the risk of missing a hidden spam call is high. The competent combination of schedules and contact filters makes this tool a powerful ally in the fight for digital hygiene.

Frequently Asked Questions (FAQ)

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Comprehensive approach: the combination of the built-in MIUI filter, operator services and Do Not Disturb mode gives maximum protection against anonymous spam.

To sum up, dealing with hidden numbers on Xiaomi devices requires a holistic approach: Start by setting up the built-in anτισpam, then consider connecting the service to the operator, and only if that is not enough, resort to third-party applications.