How to block numbers starting with certain numbers on Xiaomi: all ways

Spam calls, scammers and intrusive operators with numbers starting at +79XXXXX, 8800 or +375 are a familiar problem for Xiaomi owners. Unlike iPhones or naked Android, MIUI firmware offers several ways to block such numbers, from embedded tools to hidden features to third-party apps.

In this article, we will understand 4 Proven methods, including mask locking (e.g. all numbers with prefix) +7926***), setting up a “blacklist” through the standard Phone application, as well as bypassing restrictions MIUI For users of Redmi Note 12, POCO X5 We'll focus on the nuances of why some numbers still pass, how to avoid blocking important calls, and what to do if you update them. MIUI 14/15 settings dropped.

Why Xiaomi’s standard lock doesn’t work with room masks

Xiaomi owners often find that the built-in lock feature in the Phone app does not support first digit filtering. +7926 and lock all numbers with this prefix. MIUI:

• 📱 Database Limitation: A standard blacklist stores numbers as separate records, not templates, which simplifies the system but leaves it unflexible.
• 🔍 Google policy: with Android 10, Google tightened rules for manufacturers, banning blocking on regular expressions without the explicit consent of the user.
• 📊 Performance: scanning incoming mask calls requires more resources, which can slow down budget models (Redmi) 10A, POCO M5).

There are workarounds, however, such as MIUI 14+, which has a hidden feature called Advanced Lock that allows you to add prefixes manually through an engineering menu, and for older firmware versions, third-party software like Truecaller or Call Blocker will help.

⚠️ Note: If you use two of these SIM-card, number locking may not work properly on the second line. SIM Active by default for calls to Settings → SIM-maps and mobile networks.

Method 1: Locking through the standard “Phone” application (for individual numbers)

If you need to block specific numbers (not entire ranges), use the built-in functionality:

1. Open the Phone app (the tube icon on the home screen).
2. Go to the Journal tab and find the number you want to block.
3. Slip the number, then press. ⋮ → Lock down.
4. Confirm the action by selecting the option to Block this number.

For mass lockdown:

1. Go to Settings → Lock numbers.
2. Click Add manually and enter numbers via comma (maximum 500 entries).

The downside is, you have to type in each number separately, and if there are a lot of spammers, it's not effective.

Keep important numbers in contact

Make sure the number does not belong to the bank or support team

Check if this number is already blocked.

Sync the blacklist with your Mi Account (if necessary)

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Method 2: Use the engineering menu to block by prefix

This method works on MIUI 12-15 and allows you to block numbers by the first digits (for example, all +7926*).

Instructions:

1. Open the phone app and enter the combination: ##4636##
2. In the menu that appears, select Phone Information (or Phone Information).
3. Scroll down to the Set Blocking Rules section (could be called Call Blocking).
4. In the Prefix Block field, type a prefix (e.g. +7926) and press Add.
5. Save the settings and restart the phone.

After that, all numbers starting with the specified prefix will be automatically blocked. If the Set Blocking Rules section is missing, then your version of MIUI does not support this feature - try updating the firmware or use method 3.

Method 3: Third-party applications for mask locking

If the built-in MIUI tools fail, install one of these apps:

Recommendation: Truecaller is best suited to block prefixes (for example, all numbers with +375).

1. Open the application and register.
2. Go to Settings → Block → Blocking Rules.
3. Select Add the rule → Prefix of the number.
4. Enter the prefix (e.g. +7926) and save.

⚠️ Warning: Truecaller may conflict with system lock MIUI. If after installation, the standard rules stopped working, turn off the synchronization of the blacklist in the application settings.

Truecaller

Call Blocker

Blacklist Plus

Other

I do not use third-party applications

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Method 4: Blocking through operator settings (for MTS, Beeline, Tele2) subscribers

Some mobile operators offer their own services to filter spam calls, such as:

• 📶 MTS: service "Spam Protection" (free for tariffs "Ultra" and "Tariff designer"). USSD-team *111*777#.
• 📶 Beeline: Antispam service (20)₽/Connected via personal account or by number 067409.
• 📶 Television2: «Protection from fraudsters” (free of charge) Included in the My Television app2 orally *155*1#.

The advantage of this method is that the lock occurs at the network level, so spam calls do not reach the phone at all (it saves battery power).

• Not all prefixes are supported (for example, +375 may not be blocked).
• The service does not replace the local blacklist on the phone.
• On some tariffs, the service is paid (check on the operator's website).

To check if the lock is working, call the blocked prefix from another phone. If you hear the message "Subscriber temporarily unavailable", the setting worked.

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If you have spam calls after you connect, try turning them off and switch them on again, and sometimes they are due to unsynchronized data in the billing system.

Frequent problems and their solutions

Even after setting up the lock, Xiaomi users are faced with typical errors:

If none of these methods helped, check:

• 🔄 Firmware updates: in MIUI 15 patched blocking bugs for some regions (e.g. Yota subscribers).
• 📵 Do Not Disturb: If it's on, it can block the locking rules. Turn it off in Settings. → Sound and vibration.
• 🔒 Administrator rights: Some apps (such as Blacklist Plus) require superuser rights (root) and will not work on unblocked Xiaomi.

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If spam calls come from different prefixes (e.g. +7926, then +7985), combine several methods: locking through Truecaller + operator service, which will increase the filtering efficiency to 95%.

FAQ: Answers to Frequent Questions