How to Remove Calls from Unknown Numbers on Xiaomi: A Complete Guide

Modern smartphone owners Xiaomi and Redmi often face intrusive phone spam that interrupts important conversations and interferes with daily life. Advertising, service offers and fraudulent calls are becoming a real problem that requires immediate solution at the operating system level. Fortunately, the MIUI shell offers powerful built-in tools to filter incoming traffic that are often underrated by users.

In this article, we will discuss in detail how to remove calls from unknown numbers on shaomi, using standard system tools without installing excessive software. You will learn about the intricacies of blacklisting, spam detection algorithms and additional Android settings that enhance protection. Competent phone configuration will allow you to forget about calls from hidden numbers and promotional offers forever.

Use of the built-in lock function in MIUI

The first and most reliable way to protect is to activate the built-in filter that is pre-installed in every Xiaomi smartphone, which works at the system call level, which ensures minimal battery consumption and high efficiency. To access the settings, you need to open the Security application, which is a standard component of the MIUI shell.

Inside the app, find the Antispam or Lock section where the main filter switches are located. This is where the user can activate the Block Unknown Numbers mode, which automatically rejects calls from numbers not in your phone book, a key setting for those who want complete silence from unwanted subscribers.

The system offers flexible lock scenarios, allowing you to choose which one to ignore: hidden numbers, international calls or all unknown contacts. Once the feature is turned on, all blocked calls will be displayed in the lock log, so you do not miss a really important call if you mistakenly entered someone on the list.

  • 📞 Open the Security app on the home screen.
  • 🛡️ Go to the Antispam section and select the lock settings.
  • 🚫 Activate the switch "Block unknown numbers».
  • 📝 Check the list of blocked calls in the event log.

⚠️ Warning: When you enable hard locking of all unknown numbers, you may miss an important call from a courier, doctor or bank employee whose number is not yet saved in contacts.

📊 How often do you worry about spam?
Every day.
Several times a week
Rarely.
Never.

Set up a blacklist through a system phone

If you find the built-in anti-spam too aggressive, you can use a finer setup through the standard Phone app. In the latest versions of Android and MIUI, the blacklist algorithms have been significantly improved. To get into the settings menu, open the call app, click on three dots in the corner of the screen and select Settings.

In the menu that opens, look for “Blocked Numbers” or “Call Lock” and the “Block Unknown Calls” option is available, which works similarly to the system, but controls the telephony module, which allows you to create exceptions and manually add specific numbers that continue to disturb despite common filters.

Special attention should be paid to the function of blocking hidden numbers, as many spammers use special services to mask their ID, enabling this option ensures that the call will not pass unless the subscriber number is displayed on the screen, which is critical for the security of your personal space.

The good thing about the system approach to blocking is that it doesn’t require additional apps that may require extra permissions, but it’s worth remembering that the number databases are updated less often than in specialized services, so manually adding spammers to the blacklist remains relevant.

☑️ Checking the lock settings

Done: 0 / 1

Using Google Assistant to Filter Spam

Google has implemented a powerful Call Filter feature in its smartphones and certified devices, including Xiaomi, which uses artificial intelligence to analyze incoming calls in real time, and if a call is flagged as spam in Google databases, the phone will automatically reset it or prompt it to respond automatically.

To activate this feature, go to your phone’s settings, search for the “Number Define and Spam” section, and turn on the appropriate switches. The assistant will check the incoming number against a global user complaint database and mark suspicious calls in red or automatically block them, one of the most effective methods of combating mass spam.

The advantage of using Google services is that it is constantly updated database that responds to new scams faster than any static listings, and it learns from user actions: if you manually block a number, the algorithm will remember this and take it into account for other users.

It is worth noting that this feature requires a stable Internet connection, since the number check takes place in the cloud. In poor network coverage, the function can work with a delay or not activate at all, so you should not rely on it alone.

  • 🤖 Go to the settings of the mobile application from Google.
  • 🌐 Select the item "number determiner and spam».
  • ✅ Activate the “Filter spam calls” switch».
  • 📡 Make sure sync with Google servers is enabled.
How does Google's algorithm work?
The algorithm analyzes the frequency of calls from the number, user complaints and behavior patterns. If a number makes hundreds of calls per minute or is marked by thousands of users as spam, it is automatically blocked at the network or device level.> Third-party applications for enhanced protection In cases where built-in tools are not enough, specialized applications from Google Play come to the rescue. Market leaders are Truecaller, Kaspersky Who Calls and Yandex with a number detector. These programs have huge databases collected from millions of users around the world. Installing such an application gives access to advanced features, such as recognition of the name of the caller, without even saving the region’s code. For example, you can set up an app to block all calls from certain regions where you don't expect important calls. However, using third-party software requires broad permissions, including access to all contacts and call history. This poses potential privacy risks, as your data can be used to replenish the number base. Weigh the pros and cons before installing. Many antivirus companies offer solutions that integrate deeper into the system than conventional determinants. They can scan SMS for phishing links and block calls based on behavioral factors, rather than just black ones with their arsenal of records. Application Type of database Paid version Features Truecaller Global There is the Largest database, recording calls Yandex Regional (CIS) Plus Precision for Russia, integration with the ecosystem Kaspersky Antivirus There is High security, protection against viruses GetContact Social Is Shows how you recorded other mode "Do not disturb" as a temporary measure When you need absolute silence, for example, during a meeting, sleep or rest, the optimal solution will be the mode "Do not disturb". Unlike full lock, this mode allows you to set exceptions, skipping calls from certain groups of contacts or repeat calls in the phone mode, you can automatically set up in the panemeter. This eliminates the need for manual activation every evening, and an important feature is the "Repeat Calls" setting: if the same number rings twice within 15 minutes, the phone will miss a second call. It's an emergency insurance policy when someone close to you tries to reach you, and it doesn't block calls forever, it just hides notifications and sound, sending calls straight to voicemail or dropping calls without sound. In the Missed Calls log, you will see who tried to contact you while the silence mode was active. ⚠️ Warning: Make sure the alarm is set correctly, as in some configurations of the Do Not Disturb mode, the alarm clock sound may also be turned off unless appropriate exceptions are given. 💡Combination of built-in antispam MIUI Google’s filters provide 95% protection against unwanted calls without the need to install third-party software (FAQ) Will SMS come from blocked numbers? By default, the call lock does not apply to SMS messages. To block text messages, you need to activate filtering separately. SMS In the same section, "Antispam" or in the settings of the Messages app, will the caller see that his number is blocked? No, the operator and the caller's phone do not send any notification of blocking. For a subscriber, your phone will just hum for a long time and then reset as if you didn't pick up the phone or are out of range. Can you restore deleted numbers from a blacklist? Yes, all locked numbers are stored in a lock log. You can log into the lock history at any time, find the number you want, and remove it from the list, and then call from that number will go back. Does the locking of numbers affect battery charge? Built-in locking functions consume minimal energy because they work at a low system level. Third-party applications with constant network monitoring can consume significantly more charge, especially when you are actively using mobile Internet.