Why spam calls have become a problem โ1 for Xiaomi owners in 2026
Spam calls have become a nightmare for smartphone users โ according to Kaspersky, in 2023, one in three subscribers in Russia received at least one fraudulent call a week. Xiaomi owners suffer especially hard: open MIUI architecture and brand popularity make them a priority target for spammers. Scammers use number swapping (spoofing), automatic robbells and even vulnerabilities in the VoIP protocol to bypass standard locks.
Compounding the problem, many users are unaware of MIUIโs built-in spam control tools. Meanwhile, even the phoneโs basic settings allow you to cut off up to 80% of unwanted calls without installing additional apps. In this article, weโll take a look at 5 proven methods, including hidden features that arenโt mentioned in the official instructions, and explain how to set up security to keep an important call from a bank or delivery service from missing.
Xiaomi's feature is that the spam blocking system works on three levels: the MIUI shell level, the Phone app level, and the carrier level, and we'll show you how to use all three at the same time for maximum protection, and for the most persistent spammers, we've got a secret method, using ADB, which blocks calls before they even get to the log.
Method 1: Built-in blacklist in MIUI - how to add a number to the lock in 10 seconds
The fastest way to block an annoying number is to use the built-in blacklist in the Phone app, which works on all Xiaomi smartphones with MIUI 12 and later, including the Redmi Note 12, POCO X5 and Xiaomi 13. The main advantage is that you do not need to install third-party apps, and the lock is triggered before the first horn.
To add a number to the blacklist:
- Open the Phone app (the phone icon on the home screen).
- Go to the Call Log and find the number you want to block.
- Click on the number, then select โฎ โ Lock the room.
- Confirm the action in the pop-up window.
For mass blocking of spammers:
- ๐ฑ Go to Settings. โ Annexes โ Phone. โ Number locking.
- ๐ Click Add manually and enter numbers via comma (up to 500 pieces).
- ๐ Turn on the option "Block unknown numbers" - this will cut off robbrae with swapped numbers.
- ๐ Keep in mind to update the list: spammers often change numbers, but the first ones are the ones who are the first to change numbers. 3-4 The numbers often remain the same.
Added all known spam numbers | Unknown number blocking enabled | Checked block test call | Cleared log from old spam calls-->
An important nuance: the built-in blacklist does not block SMS, you need to separately configure filtering in the Messages app. Also, it is worth remembering that the lock only works for voice calls, but ViBER calls or WhatsApp calls will have to be blocked in the messengers themselves.
๐ก
If the spammer calls from different numbers, but the first 3-4 digits match (for example, +7 9xx 123-XX-XX), add the +79xx123 template to the blacklist - this will block all numbers with such a prefix.
Method 2: Google Spam Filter โ How to Enable Android-level Protection
Few people know, Xiaomi has disabled Google's built-in spam filter, which works at the operating system level, by default, and it analyzes a real-time database of spam numbers, and blocks known fraudulent calls before they even get to the log, and it can be turned on in 3 steps:
Instructions for MIUI 13/14:
- Open the phone app.
- Press three points (โฎ) in the upper right corner and select Settings.
- Go to Spam and Call Blocking.
- Activate the Spam Filter switch (may be called Spam Protection on some firmware).
- Turn on the โShow spam warningsโ option to see which calls have been blocked.
Once the filter is activated, all spam calls will be marked with a red exclamation point in the call log, and the most dangerous numbers (scamers, collectors) will be blocked automatically. Google's database is updated daily, so the effectiveness of this method is ~70% for new spam numbers.
| Function | Description | Recommendation |
|---|---|---|
| Spam filter | Blocks spam numbers from Google database | Include it. |
| Spam warnings | Shows notifications of blocked calls | Insert for control |
| Blocking of unknowns | Cuts off calls from hidden numbers | Turn on if you are not waiting for important calls |
| Spam report | Allows you to send data about new spammers to Google | Include to improve the base |
Googleโs Spam Filter only works for standard voice calls SIM-It doesn't block VoIP calls (WhatsApp, Telegram, Viber) and if you use instant messengers often, then you can set up a lock on each one.
Daily | Several times a week | Rare (once a month) | Never-->
Method 3: Operator-level locking setup โ why it matters
Many users overlook the fact that telecom operators (MTS, Beeline, MegaFon, Tele2) provide their own spam blocking services, which operate at the network level and can cut off up to 90% of robbrae before the signal reaches your phone, the main advantage is that spammers do not see that their number is blocked, and can not adapt.
How to connect protection to popular operators:
- ๐ก MTS: send SMS 1 to 3662 (free) or connect the "Spam Protection" option in your personal account".
- ๐ก Beeline: Dial *110*789# Or activate My Beeline in the Antispam section".
- ๐ก MegaFon: Send an empty SMS room 0001 Or connect the service "Spam filter" through USSD-team *105*457#.
- ๐ก Television2: type *155*1# or activate the option "Protection from fraudsters" in your personal account".
It is important to understand that operator filters work in different ways:
- โ Pros: network-level lock (spam doesnโt reach your phone), updated scam databases, often free of charge.
- โ Cons: Can block legitimate calls (e.g. from banks) and do not work for VoIP calls.
What if the operator has blocked an important number?
Professional advice: combine operator-level locking with built-in MIUI tools. For example, if you have MegaFon, plug in a Spam Filter, and on your phone activate Google Spam Filter and blacklist numbers that have still been leaked, this multi-layer approach provides almost 100% protection.
Method 4: Third-party applications โ when embedded tools are not enough
If spam calls continue to penetrate despite all settings, it is time to turn to third-party applications.
- ๐ Cloud-based spam numbers (updated in real time).
- ๐ Behavior analysis (blocking repeated calls from different numbers).
- ๐ก๏ธ Protection against number swapping (spoofing).
- ๐ Personal whitelists (to avoid missing important calls).
Top.-3 applications for Xiaomi 2026 year:
| Annex | Features | Cost |
|---|---|---|
| Truecaller | Largest spam number database (500 million users), identification of unfamiliar numbers, blocking of SMS | Free (premium - 299) โฝ/moss) |
| Hiya | Specializes in fraudulent calls, integration with operators, minimalist interface | Free of charge. |
| Who's calling? (from Mail.ru) | Optimized for Russia, recognizes regions of calls, blocking by category (banks, collectors) | Free of charge. |
How to set up Truecaller (the most popular solution):
- Download the app from Google Play (avoid third-party sources!).
- Register with a phone number (required) SMS-confirmation).
- In the Settings section โ Lock it on:
Journal
Spam.
โ ๏ธ Note: apps like Truecaller require access to your phone book and call log. If you are confused, use them in guest mode without registering - some features will be limited, but the basic spam lock will remain.
Alternatively, if you donโt want to install a separate application, try MIUI Security (built into firmware) which has a Call Lock module with the ability to import blacklists from a.csv file. This is convenient if you have a ready-made database of spam numbers (for example, from colleagues or from the Internet).
Method 5: Advanced ADB lock for power users
If youโre ready to dive into the technical details, blocking through ADB (Android Debug Bridge) will block spam calls at the system level, a method that works for Xiaomi with an unlocked bootloader or root rights, but works on standard MIUI 14 firmware without root.
Step-by-step:
- Install ADB Tools on your computer.
- Enable Developer Mode on Phone: Settings โ About Phone โ MIUI Version (click 7 times)
- Activate USB Debugging in Settings โ Additional โ For developers.
- Connect your phone to your PC and execute a command to lock the number (for example, +79123456789): adb shell content insert --uri content://call_log/calls --bind number:s:"+79123456789" --bind type:i:3
- For mass blocking, create a blocklist.txt file with numbers (one per line) and execute the script: for number in $(cat blocklist.txt); do adb shell content insert --uri content://call_log/calls --bind number:s:"$number" --bind type:i:3 done
Psychological trick: if you get a call from a scammer, don't rush to drop it. Say, "Hello, security. Your number is marked as fraudulent. All the data is passed to the police." In 80% of cases, this stops further calls, spammers label your number as "problematic" and exclude from the database.
What to do if spam calls continue despite all settings
If you have tried all methods, but spam calls still penetrate, then you are faced with targeted spam (for example, your number was in the database of microfinance institutions or collectors), in this case, only a comprehensive approach will help:
- File a complaint with Roskomnadzor. ๐ Record the spammer number (take a screenshot of the call log). ๐ Fill out the form on the website of Roskomnadzor (section "Complaints on spam"). ๐ The complaint is considered up to 30 days, but after its satisfaction, the operator is obliged to block the number at the network level.
Contact the operator to block the number.
Write in support of your operator (via chat in the app or on the website) asking to add a number to the blacklist at the network level. โ 230 On the Protection of Consumer Rights".
Use the white list as a last resort.
If spam is completely flooding your number, set your phone to only receive calls from contacts:
Settings โ Applications โ Phone โ Locking numbers โ Enable โContacts Onlyโโ ๏ธ The downside is that you will miss calls from new contacts (such as a doctor or courier) and only use this method in critical cases.
If spam calls are accompanied by threats or blackmail (for example, collectors demand to pay back someone else's debts), immediately contact the police.
- ๐น Record the conversation (in Xiaomi, you can do this through Settings) โ Annexes โ Phone. โ Recording of conversations).
- ๐ Save the details of the call (number, time, duration).
- ๐ Write a statement to the nearest police station or through the Interior Ministry portal.
One last tip: if nothing works, consider changing the number, and in 2026, you can do it remotely via an operator's app (for example, MTS or Beeline) without visiting an office. โฝ tariff-dependent.