How to permanently disable calls from unfamiliar numbers on Android Xiaomi

Spam calls and intrusive calls from unfamiliar numbers have become a real problem for owners of Xiaomi, Redmi and smartphones. POCO. According to Truecaller, in 2026, every user in Russia receives an average of 12 spam calls per month — from scammers, telecom operators and advertising robots. MIUI There are hidden tools that allow you to effectively combat this scourge.

In this article, we will discuss 5 working ways to disable calls from unfamiliar numbers on Xiaomi – from standard settings to little-known features and third-party apps. You will learn how to set up a Blacklist, activate Spam Filter, use Do Not Disturb Mode with exceptions, as well as which applications will help in the fight against fraud. MIUI 12/13/14 smartphone models.

1. Standard MIUI Blacklist: How to Add a Number Manually

The easiest way to block is to use the built-in Blacklist, which works on all Xiaomi smartphones regardless of the model and firmware version, the main advantage of the method is that it does not require the installation of additional applications and does not affect the performance of the device.

To add a number to the Blacklist:

1. Open the phone application (pipe icon).
2. Go to the Journal tab and find the unwanted number.
3. Click on the number → select Block (or Blacklist in older versions of MIUI).
4. Confirm the action in the pop-up window.

You can also add the number manually through the settings:

Settings → Applications → Phone → Blacklist → Add a number

Is the number added to the Blacklist?| Is the call log checked for duplicates?| Is the spam filter activated in the settings?| Are the locks with the Mi--> account synchronized?

⚠️ Attention: B MIUI 14 locked numbers are automatically deleted from the call log after 30 days.To save the history, export the log to Settings → System and device → Backup.

2.Spam filter in MIUI: automatic blocking of scammers

MIUI firmware has a built-in Spam Filter that analyzes incoming calls and SMS from Xiaomi’s database.This feature works at the system level and does not require an Internet connection (unlike third-party applications), Filtering efficiency is about 70-80% for Russian operators.

How to turn on the filter:

1. Open the settings → Applications → Phone.
2. Select Spam Filter (or Spam Protection in MIUI 13).
3. Activate the Filter Calls switch.
4. In the filter settings section, select the level of aggression: 🔹 Low – blocks only obvious spam (banks, collectors). 🔹 Medium – adds filtration of robbrae and mass mailings. 🔹 High – blocks all numbers not saved in contacts (risk of missing an important call!).

Once activated, all blocked calls will be displayed in a separate Spam tab in the call log, where you can manually unlock the number if the filter is not working correctly.

Daily | Several times a week |Rarely, 1-2 times a month |Almost never-->

3.Do Not Disturb: A Radical Method of Blocking

If you're flooded with calls from scammers, you can use Do Not Disturb (DND) mode with exception settings, which blocks all incoming calls except favorite numbers or contacts, and is suitable for those who are willing to sacrifice convenience for silence.

Mode setting:

1. Go to Settings → Sound and vibration → Do not disturb.
2. Activate the mode and select Settings → Allow exceptions.
3. In the Challenges section, please indicate: 📞 Contacts only – miss calls from the phone book only. ⭐ Favorites – skip calls only marked “Favorites". 🔄 Repeated calls – if one number calls 2 times within 3 minutes, the call will pass.

Save the settings and activate the mode.

The downside is the risk of missing an important call (e.g. from a courier or support team) to reduce the risk, add frequently used numbers (bank, job, family) to your favorites in advance.

💡

Create a separate contact group "Important" in the Contacts app and allow calls only from it in DND mode. So you do not miss critical calls, but block spam.

4 Third-Party Applications: Truecaller, GetContact and Alternatives

The built-in MIUI tools don't always work with modern spam techniques, third-party apps that use global fraud databases and update them in real time come to the rescue, and the market leader is Truecaller, but there are lesser-known but effective alternatives.

Top.-3 Applications to block spam on Xiaomi:

• 📱 Truecaller – 500 million room database, Russian language support, integration with the Russian language MIUI. Cons: requires registration and collects contact data. Download to Google Play
• 🔍 GetContact — specializes in identifying fraudsters and "gray" numbers, shows the real names of the owners (according to users).
• 🛡️ Hiya - blocks robbrae and SMS-Spam, running in the background without battery drain.

How to configure Truecaller for maximum protection:

1. Install the application and complete the registration.
2. In the settings (⚙️ → Locking off) activate: 🔘 Blocking spam calls 🔘 Blocking hidden numbers 🔘 Blocking by keywords (e.g., “credit”, “winning")

Synchronization

⚠️ Note: Apps like Truecaller require access to contacts, call logs, and SMS. Before installing, check the permissions in Settings → Annexes → Permissions and disable unnecessary (e.g. location access).

5. Hidden MIUI functions: prefix and geolocation locking

MIUI 13/14 has little-known features that allow you to block calls by prefix number (for example, all numbers with code +7 495) or by geolocation (calls from other countries), these tools are hidden in the developer menu and require activation.

How to turn on the lock by prefix:

1. Activate Developer Mode: Settings → About Phone → MIUI Version (click 7 times)
2. Go to Settings → Additional → For developers.
3. Find the option “Blocking Calls” by template (or “Call Blocking Patterns” in English firmware).
4. Add room masks to lock, for example: 📞 +7495* – all Moscow rooms. 📞 +7800* – Free numbers (often used by fraudsters). 📞 +375* – All calls from Belarus.

For geolocation locking:

1. In the same developer menu, find International Call Blocking.
2. Select regions to block (e.g. Africa, Asia).
3. Save the settings and restart the device.

Additional measures: two-step lock and cloud synchronization

For maximum protection, we recommend combining several methods, such as using the built-in spam filter MIUI + Truecaller + Do Not Disturb Mode with exceptions, and it is also useful to configure cloud synchronization of the blacklist so that locks are saved when you change your device.

How to set up cloud synchronization:

1. Open the Settings. → Accounts. → Mi Account.
2. Make sure that the synchronization of Contacts and Call Log is enabled.
3. In the settings of the Phone application, activate the Synchronization of the black list.

For two-stage lockdown:

1. Add the number to the Blacklist through the standard menu.
2. Open Truecaller and lock the same number there (double protection).
3. Set up notifications for blocked calls in both apps.