How to add a number to the blacklist on the Xiaomi phone: all ways for MIUI

Why you need to lock numbers on Xiaomi and how it works

Spam calls, annoying SMS messages from banks and marketers, and unwanted contacts from former colleagues or casual acquaintances are all problems faced by every second Xiaomi owner. Unlike iPhones, where number locking is implemented via iCloud, MIUI smartphones offer flexible tools right in standard applications. But many users do not know that Redmi or POCO can not only block individual numbers, but also configure filters for entire ranges (for example, all numbers with the code +375 for blocking Belarusian spam).

In this article, we will look at all the current ways to blacklist Xiaomi in 2026, from basic locks through the Phone app to hidden MIUI features that are not even written about in the official documentation. Also, we will find out why sometimes locks don’t work (spoiler: not only carriers are to blame) and how to get around restrictions. If you are tired of calling from unknown numbers or want to restrict a particular person’s access to your messages, read on.

Method 1: Locking through the phone application (the fastest)

The standard method that works on all Xiaomi smartphones – from the budget Redmi 12C to the flagship Xiaomi 14 Ultra. the interface may vary slightly depending on the version of MIUI (14 or 15), but the algorithm of actions remains the same:

1. Open the Phone app (the tube icon on the desktop).
2. Go to the magazine tab (the icon of the clock at the bottom of the screen).
3. Find the number you want to block and tap it.
4. In the window that opens, press three points (⋮) in the upper right corner and select Block the number.
5. Confirm the action by pressing OK in the dialog box.

⚠️ Note: If the number is already saved in the contacts, the system will suggest either blocking only the number or removing the contact completely).

The number is not saved in "Favorites"

Notifications for missing numbers are disabled

No active WhatsApp/Telegram chats with this contact

History checked. SMS newsletter-->

Once blocked, the number will automatically be blacklisted by MIUI, and all the numbers will be ignored, but the caveat is that if the caller uses a hidden number (Anti-AON option for the operator), this method will not work.

Method 2: Manage blacklisting through settings

If you need to add a number manually (for example, you know the spam number in advance but it hasn’t called yet), or want to edit an existing list, use system settings:

1. Open Settings → Applications → Application Management.
2. In the search bar, enter the Phone and select the application of the same name.
3. Go to Number Block (or Blacklist in older versions of MIUI).
4. Click Add a number and enter it manually or select from contacts.

You can do this here.

• 📵 Remove numbers from the blacklist (slip by number and select Delete).
• 🔍 View the history of blocked calls (installation log).
• ⚙️ Set up exceptions (for example, allow calls from blocked numbers in emergency cases).

💡 Useful advice: B MIUI 15, Keyword Blocking is available, and if you turn it on in the blacklist settings, you can automatically block the numbers in the blacklist. SMS which contain the words “credit”, “winning” or “extension».

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To quickly find the blacklist settings, use the Settings search – enter the “number lock” request.

Method 3: Spam and Fraud Filter (for Hidden Numbers)

Normal locking does not work with hidden numbers (displayed as “Unknown” or “Private Number”). For these, MIUI has a separate tool – a spam filter that analyzes incoming calls from the database of Xiaomi and telecom operators.

1. Open the phone. → ⋮ (three-point) → Settings.
2. Go to Blocking and Filtering (or Spam Protection).
3. Turn on the switches: 🛡️ Spam filter – blocks known fraudulent numbers. 📞 Block hidden numbers – ignores calls with number definition disabled. 💬 Filter SMS — automatically sends spam messages to a separate folder.

⚠️ Note: Spam filter requires an internet connection because it checks numbers on Xiaomi’s cloud base. If you have mobile data or Wi-Fi disabled, the feature will not work. SIM-map.

🔹 Important: If after turning on the spam filter you have stopped receiving important SMS (For example, from a bank, add bank numbers to a whitelist. To do this, select Exceptions and enter numbers manually in the filter settings.

Method 4: Blocking through Google Messages (for SMS)

If you use Google Messages instead of Xiaomi’s standard Messages app, SMS blocking is set up separately, which is useful if spam is in the form of text messages rather than calls:

1. Open Google Messages and find a chat with an unwanted number.
2. Slip on the sender avatar at the top of the screen.
3. Select Details → Block and report spam.
4. Tick to Report Spam (optional) and click OK.

2. Conflict with the services of the operator

Some operators (e.g. Beeline or MegaFon) offer their own anti-spam services, which may conflict with the blocking of MIUI.

1. Send. USSD-request *111# (for MTS) or *105# (for Beeline) and make sure you do not activate the service "Spam Protection».
2. If the service is active, turn it off or set it up in the operator’s personal account.

3. Reset settings or update MIUI

Once you reset your phone to factory settings or update your firmware, the blacklist can be cleared to avoid data loss:

• 📱 Regularly export the list of blocked numbers: Settings → Annexes → Phone. → Number locking → ⋮ → Exports.
• ☁️ Enable contact sync with Mi Account (although the lock is not synchronized, this will help you to restore contacts faster).

💡 Useful advice: If you update after the update MIUI missing lock settings, try to clear the cache of the application "Phone»:

Settings → Applications → Application Management → Phone → Storage → Clear cache

Additional tools: applications for blocking

If standard MIUI tools are not enough, you can use third-party applications that offer advanced features such as:

• 🌐 Global spam number databases (updated in real time).
• 📊 Statistics of incoming challenges and SMS.
• 🔕 Geolocation lock (for example, all numbers from another region).

Top.-3 apps:

⚠️ Note: When installing third-party applications to block, only give them the necessary permissions. For example, Truecaller requests access to contacts, SMS And call logs are all for the job, but if you're confused, use alternatives like Blacklist Plus that work locally.

🔹 Important for users MIUI 15: In recent firmware versions, Xiaomi has limited the ability of third-party applications to block calls. If calls still pass after installing Truecaller, enable permission to change system settings in Settings for it. → Annexes → Special access.

FAQ: Frequent questions about locking on Xiaomi

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For maximum protection, use a combination of methods: system blocking MIUI + spam filter + third-party application (for example, Truecaller), which will help to weed out up to 95% of unwanted calls.