How to turn off anti-spam on Xiaomi phone: step-by-step instructions

Modern Xiaomi smartphones, which are based on MIUI or HyperOS shells, are equipped with powerful built-in protection mechanisms that by default block unwanted calls and SMS. However, sometimes these functions begin to work too aggressively, skipping important notifications from banks, delivery services or blocking the numbers of loved ones if they are mistakenly labeled as spam. Users often face a situation where the security system without the owner’s knowledge rejects incoming calls, creating communication problems.

So, let's look at why this is happening and how to manage filters properly. Built-in antispam uses databases and machine learning algorithms to detect suspicious activity. If you get notifications about blocked calls but you haven't set up a blacklist yourself, then automatic mode is active. It's important to know that completely disabling all filters can lead to a flurry of advertising calls from robots.

In this article, we will take a closer look at all the ways you can set up and disable anti-spam protection, and we will cover system settings, the Security app, and the nuances associated with Google’s caller, and you will learn not only to turn off the protection completely, but also to fine-tune it to your needs, creating whitelists and eliminating important numbers from the lock.

Analysis of built-in MIUI and HyperOS protection features

Before you start to shut down, you need to understand the security architecture in Xiaomi smartphones. The security system here is divided into several levels. The first level is the basic call filter, which analyzes the number of the caller. The second level is the blocker. SMS-The third layer is integrated with cloud databases, allowing the system to instantly respond to new fraud patterns.

Many users confuse the usual "Do Not Disturb" with the full-fledged anti-spam. Do Not Disturb mode simply drowns out the sound and vibration, but the call passes, and the anti-spam physically interrupts the connection or resets it before the phone rings. In the shells of the latest versions, these functions are combined into a single control center, accessed through the standard Security application. This is where all the levers of incoming traffic are concentrated.

It’s worth noting that Xiaomi’s algorithms can be too sensitive to regional features, such as taxi or courier numbers that frequently change SIM cards, which can be flagged as potentially dangerous by the system. So blind trust in automation is not always warranted, and manual adjustments are a necessity for a device to be comfortable.

• 📱 Call Analyzer: Checks the number on the database of known spammers in real time.
• 🔒 Locker SMS: hides messages with advertising and phishing links in a separate folder.
• ☁️ Cloudbase: Update lists of suspicious numbers every minute.

⚠️ Caution: Completely disabling all levels of protection will leave your smartphone without filtering advertising calls, the number of which in some regions can reach tens per day.

Setting up the blocker in the Security application

The main management tool is the system application Security (green shield icon). This is where any setting starts. Go to the application and find the Antispam section.** In some versions of the firmware, it may be called Lock or have a ban icon, inside you will see statistics of blocked calls and messages, as well as access to settings.

For a detailed configuration, click on the settings gear at the top right of the screen, and it opens a menu where you can control the behavior of the system, and you will see the lock rules, the blacklist, and the whitelist. To turn off filtering completely, you need to remove the switches at the "Block by the rules" or select the "Do not block" option.

However, if your goal is not to shut down completely, but to prevent specific numbers from being blocked, it is better to use the White List, which ensures that the contact will always pass even if the number is marked in the database as spam, a more sensible approach than removing protection from the entire device.

Inside the settings menu, you can also find the option to "Update databases." If your phone starts skipping spam or blocking everything, try updating the databases manually, sometimes the cache of antivirus signatures can get corrupted, which leads to a malfunctioning filter.

Manage the settings of Google Phone and Assistant

Complicating matters, the global versions of Xiaomi’s firmware (Global ROM) often replace the standard MIUI call with Google Dialer, in which case the system settings of Xiaomi’s anti-spam may conflict or duplicate with the settings of the Google app itself, so check both places.

Open the Phone app (Google's green handset), click on the three dots in the top right corner and select Settings. Then go to Number and Spam Definition. Here are the switches for Filter Spam Calls. If this switch is active, Google will automatically reset suspicious calls, even if Xiaomi's settings allow everything.

Also worth a look at the Google Assistant settings, often the Call Screening feature is activated automatically when you change region to the United States or other countries where the feature is popular, and the Assistant can answer calls for you or block them, which users perceive as a phone malfunction.

Working with black and white contact lists

Flexible contact management is the key to solving the problem without losing protection. The blacklist in Xiaomi phones works as an absolute barrier: calls from these numbers never pass, and the caller hears beeps or resets, depending on the operator's settings. Unlike it, the Whitelist is a priority.

To add an exception number, go to your anti-spam settings and select Whitelist, you can add a number from contacts, call history, or manually enter. Contacts on the white liste ignore any lock rules, which is ideal for situations where you get a call from work numbers that the system marks as "Robot" or "Telemarketing".

The reverse is when you want to block a particular subscriber. In the call history, click on the contact number or name, and in the menu that appears, select "Block"**. The number will automatically be blacklisted in the Security app. Remember, locking through the standard phone interface and through the security application is the same thing in the MIUI ecosystem.

• 📝 Logistics: All blocked calls are saved in the anti-spam log for verification.

⚠️ Note: Do not blacklist short service numbers (such as banks) unless you are sure of their origin.This may block you from accessing an online bank or confirming transactions.

Third-party applications and system conflicts

Often users install additional applications to determine the number and block spam, such as Kaspersky Who Calls, Yandex with Alice, NumBuster or Truecaller. These programs require deep permissions, including the right to manage calls. If you have such software, the built-in anti-spam Xiaomi can turn off automatically or work incorrectly due to resource conflicts.

If you use a third-party blocker, there is no point in setting up the system one. Moreover, having two active filters can cause the phone to stop receiving calls at all or to reset them instantly, in which case you either need to remove the third-party application or completely deactivate the built-in Antispam module in the Security application.

To remove the third-party blocker, go to Settings → Apps → All apps, find what you want and click “Delete.” If you want to leave the app only to determine the number (who is calling), but not to block, go to its settings and turn off the “Block Calls” function, leaving only “Determine the number”.

You should also mention access rights. Go to Settings → Apps → Permissions → Permission Manager → Phone. Make sure that only the system call and, if necessary, one trusted application have access to calls. Having multiple programs with access to the phone is a potential security hole and a source of instability.

Solving problems with telecom operators

Sometimes the reason for blocking is not the phone, but the services connected at the SIM level. Telecom operators (MTS, Beeline, MegaFon, Tele2 and others) offer antispam services that operate at the network level, in which case the call does not even reach your device, so no settings Xiaomi will not help to miss it.

To check if this service is active, try dialing USSD-command specific to your operator (usually combinations like *111# or go to My Operator) If the service is active, you will see it in the list of connected options.

The peculiarity of a network lock is that it often marks calls as "Spam" in the number detector, but the call itself can pass. However, in some tariff plans, such calls are simply reset. If you are waiting for an important call from an unknown number (for example, a courier), temporarily disconnect the service from the operator.

• 📡 Network layer: locking occurs before the signal arrives on the phone.
• 💳 Paid services: Many operators charge for advanced antispam on a monthly basis.
• 🔄 Settings conflict: simultaneous operation of network and telephone locks can confuse the logic of the work.

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If you have changed carriers but the lock problem remains, check to see if the Antispam service has moved along with the number saving (MNP).

Diagnostics and frequent user errors

Users often make mistakes during the setup process that negate the effort. One of the most common is changing the settings in the wrong profile. Xiaomi has a division into profiles (e.g., Work, Personal), and anti-spam settings can only apply to the active profile. Make sure you are in the main profile when making changes.

Another mistake is ignoring system updates. MIUI If you've tried all the methods, but the phone keeps getting weird, check for updates in the Settings section. → The phone. → Version. MIUI/HyperOS. Security patches often fix errors in the security module.

Also, check Do Not Disturb mode, which can be set to automatically turn on on a schedule (e.g. at night) or geolocation (in a movie), in which the caller may not be able to make calls unless the caller is on the Favorites list. Check the settings in Settings → Sound and Vibration → Do not disturb.

⚠️ Warning: Resetting all your phone settings to the factory settings will return the anti-spam settings to the original settings, but delete all your data.

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The main reason for the blockage problems is the conflict between Xiaomi’s system filter, Google Phone settings and operator services.

Frequently Asked Questions (FAQ)