How to blacklist Xiaomi smartphones: A complete guide to 2026

Spam calls, intrusive SMS messages and promotional mailings have become a real problem for smartphone owners. Xiaomi offers a built-in solution, a blacklist that allows you to block unwanted contacts automatically, but many users do not know how to set up this feature correctly or face the fact that it does not work after the MIUI update.

In this article, you will find the most current ways to include a blacklist on all Xiaomi models (including Redmi and the Redmi). POCO) latest-edition MIUI 14/15, We'll also take a look at the fine-tuning instructions, from adding numbers manually to importing lists from third-party apps, and we'll look at common errors (such as why a lock doesn't work). SIM-maps of some operators and give recommendations on optimizing the function.

What is a blacklist on Xiaomi and how does it work?

The MIUI blacklist is a system tool that automatically filters incoming calls and SMS from blocked numbers, and unlike third-party applications like Truecaller, it works at the operating system level, which ensures:

• 🔋 Minimum battery consumption – no background processes from third applications
• 📵 Blocking to the signal – the phone does not vibrate or make sounds when a spammer calls
• 📊 System Log Integration – Blocked calls are displayed in history (if not disabled in settings)

It’s important to understand that the Xiaomi blacklist has limitations: it doesn’t block messengers (WhatsApp, Telegram) or filter push notifications from apps, and it will require additional tools, which we’ll discuss in the section on alternative methods.

Official method: enable via MIUI settings

The most reliable method of activating the blacklist is to use built-in MIUI tools. The interface may vary slightly depending on the firmware version, but the general logic is maintained.

1. Open the Phone app (the tube icon on the home screen).
2. Slip on the three dots in the upper right corner and select Settings.
3. Go to the Blocking Numbers section (or the Blacklist in older versions).
4. Activate the Block Unknown Numbers Switch if you want to filter calls without an ID.
5. To add a specific number, click Add and select the contact from the phone book or enter the number manually.

In the models with MIUI 14+ (For example, Xiaomi 13 Pro or Redmi Note 12, the path may look like this: → ☰ → Settings → Lockdown and identification → Blacklist.

Update MIUI to the latest version

Check the permissions for the phone application

Make sure that SIM-The card supports the lock function (see table below)

Make a backup copy of your contacts-->

Compatibility table: blacklist and SIM-card

One of the common problems is that the blacklist doesn’t work. SIM-This is because the lock is implemented at the level of the MIUI, The following is a compatibility table for Russia, Ukraine, Kazakhstan and Belarus (current as of July 2026):

⚠️ Note: If your carrier does not support network-level locking, blacklist MIUI It will only work for local contacts (those saved in the phone book) and will require third-party software to block external numbers.

Additional settings: exceptions and blocking rules

In MIUI, you can flexibly configure your call filtering and SMS rules, like allowing calls from all contacts except certain numbers, or vice versa, blocking everyone except the whitelist.

1. Go to Phone → Settings → Lock and Identity.
2. Select the Locking Rules.
3. Activate options: 📞 Block unknown numbers to filter calls without ID 📩 Lock down SMS Unknown – to filter messages 🔄 Allow repeat calls – if one number is calling 2+ Once in a row, the lock will be removed (useful for important calls)

Exceptions

On the POCO F5 and Redmi K60 models, there is an option to block keywords in SMS. For example, you can automatically send spam messages containing the phrases “you won”, “loan online” or “call back the number”.

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If you get calls from multiple numbers (such as collectors or scammers), use the mask lock feature. Add a template like +79*** to block all 9 numbers.

Blacklist through the Security app

An alternative way to manage locks is through the standard Security app (shield icon), which is convenient if you want to centrally manage all Xiaomi protection features, including antivirus and application control.

1. Open Security → go to the Tools tab.
2. Select Blacklist (or Block Calls in New Versions).
3. Activate the function with a switch at the top of the screen.
4. Add numbers manually or import from: 📇 Contacts – Choose from the phone book 📋 Call logs – block the last incoming 📄 File - importing a list from CSV (format: number; name)

The advantage of this method is the ability to sync the blacklist with your Mi Account. If you are logged in to Xiaomi Cloud, locked numbers will be available on all your devices (for example, on Redmi Pad or Xiaomi Smart Band, if supported).

The solution to the problem: why the blacklist does not work

If the lock does not work after setting up, check the following points:

• 📱 Update MIUI: older versions MIUI 12 may be filtered bugs SMS. Update the firmware through Settings → The phone. → Updating the system.
• 📶 Problems with SIM-card: some virtual operators (such as Yota or Tinkoff Mobile) do not support network-level locking.
• 🔧 Resetting Permits: After Updating MIUI The phone application may require new permissions. → Annexes → Permit management → Phone and enable access to contacts, calls and SMS.
• 🔄 Conflict with other applications: If you have Truecaller, GetContact or similar installed, they can intercept the lock.

To diagnose the problem, use the lock log: Phone → Journal → ☰ → Blocked. This shows all blocked calls and SMS. If the list is empty, despite the fact that the calls were received, the problem is in the settings of the operator.

⚠️ Attention: On devices with MIUI for POCO (for example, POCO X5 Pro) The blacklist function can be hidden. To activate it, go to Settings. → Special facilities → System settings → Show the blacklist.

Alternative methods: third-party applications and hidden features

If the built-in blacklist doesn’t do the job, consider these options:

1. Spam blocking applications

• 🛡️ Truecaller: Spamer number databases, identification of unfamiliar subscribers.

2. Hidden MIUI functions

Some devices (such as Xiaomi 12T or Redmi Note 11 Pro+) have undocumented geolocation locking.

Enter the phone code in the app: ##4636##


Go to "Phone Information" → "Battery Settings"




Enable the option "Blocking international calls"

This will block all incoming numbers from foreign numbers (useful for protection from fraudsters from abroad).

3. Locking through the operator

Many operators provide their own anti-spam services:

• 📱 MTS: Antispam service (connected by USSD-code *111*789#).
• 📱 Beeline: "Spam Protection" (free for subscription fees).
• 📱 MegaFon: "Spam filter" (activated in the personal account).

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Third-party applications may conflict with the built-in MIUI blacklist. If you use Truecaller or analogs, disable the lock function in them to avoid duplication.

FAQ: Answers to Frequent Questions