How to Set Up Anti-Spam on Xiaomi: From Basic Filters to Hidden Features

Spam in messages, calls and notifications is one of the most annoying problems for Xiaomi smartphone owners. Even on new devices with HyperOS or the latest versions of MIUI 14, users are faced with intrusive advertising, fraudulent SMS and robot callers. In this article, we will analyze all the available methods of protection, from standard features in the settings menu to hidden settings and third-party applications.

Xiaomi’s smartphones feature a built-in security system that works in parallel with Google’s services, but many users don’t know that anti-spam on Xiaomi can be configured not only for SMS, but also for calls, notifications from messengers and even system alerts, and we will show how to activate each of these filters, and also tell you about nuances that are not described in the official documentation.

Important: Some features may vary depending on the firmware region (global, Chinese, European) and the MIUI/HyperOS version. All instructions in this article are checked on current firmware in 2026.

1. Standard anti-spam in the Messages app

Xiaomi’s basic spam protection is implemented through the Messages app, which blocks SMS from known spammers and scammers, but by default it is often disabled or ineffective. Here’s how to set it up correctly:

Open the Messages app, then go to ⋮ (three-point) → Settings → Spam and blocking. There are three key options available:

• 📩 Spam blocking – includes filtering incoming SMS. We recommend activating this switch.
• 🔍 Number check – compares incoming messages to Xiaomi’s spammer database, only works when connected to the internet.
• 📊 Spam log - this is where all blocked messages are stored. Check this section once a week to avoid false positives.

Note that if you use Google Messages instead of the standard application, the built-in Xiaomi anti-spam will not work, in which case, go to the section on setting up protection in Google services.

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If important SMS (e.g. from a bank) stop coming after activating anti-spam, add sender numbers to the White List in the same Spam and Block menu.

2.Block spam calls through "Security"

Xiaomi's Unsolicited Call Blocking feature is hidden in the Security app, which runs on a cloud-based database and can screen out up to 90 percent of robo calls to enable it:

1. Open the Security app (the shield icon).
2. Go to the section "Call Blocking" (or "Call Blocking" in English firmware).
3. Activate the switch to block spam calls.
4. Enable the option of Checking numbers in the cloud for maximum efficiency.

You can also manually blacklist or set exceptions on the menu, for example, if you get frequent calls from unknown numbers (such as delivery services), add them to the White List to keep an important call from missing.

3. Hidden anti-spam settings via engineering menu

Few people know, but Xiaomi has a hidden engineering menu where you can fine-tune spam filtering, which is suitable for power users, because the wrong changes can lead to failures.

Open the phone application and enter the combination:

##4636##

In the menu that opens, select Phone Information → Testing menu (the path may be different on some firmwares).

• 🔧 spam.filter.level – the level of aggressiveness of the filter (values from 1 to 3, where 3 is the maximum lock).
• 📡 spam.cloud.sync – the sync frequency with the cloud base (we recommend a value of 1 for daily updates).

After the changes, restart the device. The effect of the settings will be noticeable in 12-24 hours, as it takes time to sync with Xiaomi servers.

4. Antispam in messengers: WhatsApp, Telegram, Viber

Xiaomi’s standard settings do not protect against spam in instant messengers. For each application, you need to configure filtering separately.

WhatsApp

WhatsApp doesn’t have built-in anti-spam, but you can limit the reception of messages from strangers:

1. Open up. ⋮ → Settings → Confidentiality.
2. In the Groups section, select My Contacts to prevent others from adding to the groups.
3. Enable Security Confirmation to protect against phishing.

Telegram

Telegram has more flexible settings:

• 🤖 Go to Settings. → Confidentiality → Calls and select My contacts to block calls from strangers.
• 📨 In the Messages section, activate the Message Filter – this will create a separate folder for spam.

Viber

In Viber, anti-spam is configured as follows:

1. More. → Settings → Confidentiality → spamming.
2. Enable Spam Blocking and Hide Spam Chats.
3. Add problem numbers to the blacklist manually.

5. Third-party applications for extended protection

If Xiaomi's built-in features aren't enough, you can install specialized anti-spam apps, and we tested three of the most effective ones:

When installing third-party anti-spam applications, consider:

• 🔒 They're requesting access to the Call Log, SMS Contacts – only give permissions to verified programs.
• 📱 Some apps may conflict with Xiaomi’s built-in security system.If standard features stop working after installation, clear the app’s cache.

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The anti-spam side of the application is more effective than the built-in filters Xiaomi, but require more rights and can affect the autonomy of the device.

Additional measures: SIM-map, operator, network settings

Sometimes spam can even get through all the filters, and you should pay attention to:

Operator services

Most mobile operators (MTS, Beeline, MegaFon, Tele2) provide free anti-spam services, for example:

• 📵 MTS: service "Spam Protection" (activated by the USSD-code *111*769#).
• 🛡️ Beeline: "Antispam" (connects in the personal account).
• 🔄 MegaFon: Spam filter (available in the operator’s mobile application).

Settings SIM-map

If you use two of them SIM-The spam can come to any number, to limit this:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose. SIM-map on which spam arrives.
3. Disable Incoming Calls from Unknowns or SMS from Strangers (not available on all firmware).

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If spam comes from short numbers (e.g. 1234, 5678), contact the operator – these messages are often sent on behalf of banks or government services, but are actually fraudulent.

7. Frequent problems and their solutions

When setting up anti-spam on Xiaomi, users encounter common errors, and we have collected the most common ways to eliminate them:

⚠️ Note: If after activation of anti-spam stopped coming SMS From the bank or confirmation codes, check the whitelist in the message settings, add numbers like 900, 909, 2100 and other short numbers that financial institutions use.

If none of the methods worked, try resetting your network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Network Resetting.
3. Confirm the action and restart the device.

FAQ: Frequently Asked Questions