How to permanently block an unknown number on Xiaomi: all the ways

Every Xiaomi smartphone owner will sooner or later face annoying calls from unknown numbers, spammers or scammers. According to Truecaller statistics, users will be in 2026. MIUI 37% more spam calls than other Android devices are received, due to the popularity of the brand and the specificity of the Chinese operation. SIM-maps.

In this article, we will discuss all the current ways of blocking, from standard MIUI 14/15 functions to hidden settings and third-party applications. You will learn how to block not only a specific number, but also entire ranges (for example, all numbers with a code +375), as well as configure automatic spam filtering.

1. Standard lock through call log

The easiest way is to use the built-in MIUI tools. This method works on all models, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra, and does not require the installation of additional applications.

Instructions:

• 📱 Open the phone application (pipe icon)
• 🔍 Go to the Journal tab and find the desired number.
• 🚫 Press the number. → ⋮ (three-point) → Lock down
• ✅ Confirm the action in the pop-up window

Once blocked, the number will automatically be blacklisted, and all subsequent calls and SMS from it will be ignored, and important: this method does not block numbers in messengers (WhatsApp, Telegram), only standard calls and SMS.

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2. Manage blacklist in settings

If you need to massively edit blocked numbers or add a number manually (for example, if it does not have time to appear in a journal), use system settings:

1. Go to Settings → Applications → Phone → Lock numbers
2. Tap Add a number and enter it manually (e.g. +79991234567)
3. For mass import, click ⋮ → Import/Export and select the file.vcf or.txt

This menu also includes:

• 🔄 Unlock numbers (swipe left on record)
• 📋 Export the list for backup
• 🔍 Search for blocked numbers (useful if the list is large)

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If you often receive calls from international numbers, blacklist the prefixes of countries using a + sign (for example, +375 for Belarus or +92 for Pakistan), which will block all numbers from these countries.

3. Keyword blocking (hidden MIUI function)

The unique MIUI firmware feature allows you to block numbers not only by numbers, but also by keywords in the subscriber’s name, which is useful if spammers use different numbers but the same name (for example, “SberBank” or “Gift Card”).

How to set up:

1. Open Settings → Applications → Phone → Blocking by Keyword
2. Turn on the switch to Block calls with keywords
3. Add words by comma (for example: credit, winnings, savings, gift)
4. Select Action: Block or Send to Voicemail

Limitations of function:

• ❌ It only works for incoming calls (not for incoming calls). SMS)
• ❌ Does not recognize Cyrillic in the Latin layout (for example, "kredit" will not block "credit")
• ❌ Maximum 20 Keywords

4.Use Truecaller for Extended Filtering

Truecaller is integrated into MIUI firmware at the system level and offers the most powerful spam protection, it recognizes scammers from a database of 300 million users and blocks them before the first call.

Setting:

• 📥 Install Truecaller from Google Play (or upgrade if preinstalled)
• 🔑 Register with your phone number (required for work)
• 🛡️ Go to Settings. → Lockdown → Autolock spam and turn on all switches
• 🔄 B Settings → Calls. → Caller ID select Truecaller as the default application

Advantages of Truecaller:

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5. Blocking through the operator

If the phone calls are from the same number but the phone keeps changing the last digits (e.g. +799912345XX), locking the phone won't help.

The methods of blocking from popular operators:

• 📡 MTS: send SMS with the text BLOCK XXXXXX (where X is the number) on 111 or use your personal account
• 📡 Beeline: Call 067409 team *110*789# (where 789 — number)
• 📡 Megaphone: USSD-team *130# → "Number locking"
• 📡 Tele2: SMS with the text BLOCK XXXXXX at 5050

⚠️ Note: Operator blocking only works on the operator’s network. If you use a virtual operator (e.g. Yota or Tinkoff Mobile), this method may not work.

The advantage of the method: locking works even if you have another phone (not Xiaomi), the disadvantage: operators often charge a fee for the service (from 1 to 5 rubles per number).

6. Hidden MIUI settings for power users

There are hidden parameters in MIUI firmware that allow you to fine-tune the lock.

1. Open the phone application
2. Enter the code ##4636##
3. Go to the tab Phone Information
4. Scroll down and tap 5 times on your phone settings
5. Go back, a new option will appear.

You'll find this menu:

• 🔕 Blocking all incoming numbers from hidden numbers (if calling with the "Unknown" ID")
• 📵 Disable notifications about blocked calls (to avoid seeing them in the curtain)
• 🔄 Resetting the counter of missed from blocked numbers

⚠️ Warning: Sloppy changes to hidden settings can cause phone malfunctions.Before experimenting, back up through Settings → The phone. → Backup.

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Hidden MIUI settings allow you to block not only numbers, but also entire ranges (for example, all numbers with the code +86 for China) or calls with the "Unknown" determinant.

7. Alternative applications for blocking

If MIUI is not enough, consider third-party apps, and we tested 10 popular blockers and selected the best ones for Xiaomi:

When choosing an application, pay attention to:

• 🔒 Access Rights: A good blocker only requests Log Reading and Call Management
• 📊 Block statistics: the app should show how many calls it filtered
• 🔄 Update of the spammer database: the relevance of data is critical

FAQ: Frequent questions about locking numbers on Xiaomi