Intrusive calls and advertising are a problem for every smartphone owner, and Xiaomi, Redmi and POCO devices are no exception. In 2026, spam filters have become not just a convenient option, but a critical element of protecting personal space and digital hygiene. Many gadget owners mistakenly believe that third-party software is necessary for effective protection, but the built-in tools MIUI and HyperOS offer powerful solutions that work at the system level.
Installing and properly configuring anti-spam on Xiaomi not only eliminates annoying calls, but also saves battery power by preventing background malware activity. In this article, we will discuss in detail all available methods of protection, from activating hidden security features to fine-tuning databases to block unwanted numbers. You will learn to distinguish between real threats and false positives, ensuring maximum comfort of using a smartphone.
Activation of the built-in security defender
The first step to creating a robust spam barrier is to activate the regular Security app, which is pre-installed on every Xiaomi device, which is integrated deep into the shell and has privileged access to telephony, allowing you to block calls before they even reach the user's screen.
Inside the application interface, you'll find the call filtering section, which, depending on the firmware version, can be called "Antispam" or "Blocking," and that's where the main controls for incoming traffic are, and the locking algorithms work in conjunction with cloud databases, making them much more effective than simple blacklists, where numbers need to be entered manually.
Why is built-in anti-spam better than third-party?
Once you log in to the lock menu, the system will suggest you turn on the spam protection feature. It is important to agree to the terms of use and allow the application to access contacts and call logs. Without these permissions, filtering will not work. It is also recommended to activate database updates to allow the smartphone to receive information about new fraud schemes in real time.
Filters and Blacklist Configuration
Basic activation is just the beginning of the journey. To maximize efficiency, you need to fine-tune your filters to your needs. The Antispam menu has a settings section where you can select the level of lock severity, you can adjust your response to hidden numbers, international calls, or numbers that start with specific prefixes.
Special attention should be paid to the Blacklist function, which can be manually added to specific numbers that are guaranteed not to pass, and the system allows you to create rules based on keywords in the Internet. SMS-messages that are relevant for blocking advertising mailings from banks or stores.
☑️ Configuring the lock filters
An important element of the setup is to create a White List, which includes emergency numbers, work, relatives and other contacts, calls from which must always pass, even if they are mistakenly labeled as spam, which will prevent a situation where a critical call is lost due to aggressive filtering.
⚠️ Note: When you turn on Contacts Only or Whitelist Only, all other calls will be automatically reset. Use this mode with caution to avoid missing important calls from couriers or delivery services.
Integration with cloud databases
The effectiveness of any antispam depends on the relevance of its number database. Xiaomi’s built-in solutions often use third-party databases such as 360 Security or Tencent, which aggregate complaints from millions of users around the world. Connecting to these services allows you to identify the caller as “Advertising”, “Fraudster” or “Telemarketing” before the buzz.
To activate this feature, you need to find the option “Update databases” or “Use online services” in the anti-spam settings. It is recommended that you set up automatic updates of these databases via Wi-Fi so that the smartphone always has updated information about new cheating schemes. Statistics show that cloud filtering cuts off up to 95% of all unwanted traffic.
It is worth noting that using cloud databases can raise privacy concerns among users, and when enabled, incoming call numbers can be checked on the partner’s servers, but for most users, the level of protection provided by this method outweighs the potential risks of leaking metadata about calls.
Third-party applications to enhance protection
If the built-in system is not enough, the market offers powerful alternatives in the form of specialized applications, with Truecaller, Kaspersky Who Calls, and GetContact leading the niche, with their own, often more extensive number databases, and using machine learning techniques to identify new spammers.
Installing third-party anti-spam on Xiaomi requires careful attention to permissions. The application must be given rights to manage calls and access contacts. Without this, it will not be able to determine the number and block the call. Once installed, the application will offer to conduct initial configuration and synchronization with the server.
However, it is worth remembering that these programs are resource intensive, they can consume more power and RAM than built-in counterparts, and some of them can aggressively request access to personal data of the user, which requires careful study of privacy policies before installation.
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When installing third-party anti-spam, be sure to turn off Xiaomi’s built-in filter to avoid conflicts.Simultaneous operation of two locking systems can lead to malfunctions in telephony and miss calls.
For advanced users, it is possible to configure automation scenarios through applications like Tasker in conjunction with telephony plugins, which allows you to create complex logical chains, for example, block calls during business hours if the number is not entered in contacts, or enable silence mode when in a certain geolocation.
Comparison of Spam Protection Methods
To choose the best protection option, you need to compare the available methods by key parameters. Below is a table showing the differences between embedded tools, third-party applications and operator services.
| Parameter | Built-in anti-spam | Third-party annexes | Operator services |
|---|---|---|---|
| Efficiency | Tall. | Very high. | Medium |
| Impact on the battery | Minimum | Medium/High | Absent. |
| Confidentiality | Tall. | Depends on the app. | Low (operator sees everything) |
| Cost | Free of charge. | Freemium/Paid | Paid (usually) |
And you can see from the table that embedded tools are the middle ground for most users: they don't require additional software to install, they don't put the battery on. Third-party apps win exactly the number determinant, but they require more resources. Operators like MTS's Antispam, Beeline, or MegaFon operate at the network level, but they are often paid and don't always allow flexible list management.
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The optimal security strategy is to combine Xiaomi’s built-in filter for basic locking and use cloud databases carefully to identify unknown numbers.
The choice of method also depends on the device model. On budget models of Redmi with limited RAM, the use of heavy third-party applications can lead to slowdown of the system, in such cases, the built-in functionality is the best choice.
Typical Problems and Conflicts
Users can face a number of problems during the setup process, and the most common is that calls pass despite the filter being turned on, often because the Security app was shut down by the power saving system, and Xiaomi needs to manually prevent the system from "killing" the security application processes.
To do this, go to Settings → Applications → All Applications → Security (or Antispam). Find Activity Control and select No Limits mode. It is also recommended to fix the application in memory by opening a list of running processes and clicking on the lock next to the desired application.
⚠️ Warning: If missing notifications are missing after setting up anti-spam, check the lock log inside the Security app.
Another common problem is conflict with other calling apps, for example if you use Google Phone instead of Xiaomi's standard dialer.In this case, lock settings may be duplicated or ignored.