Application core security system Xiaomi: functions, settings and tips

Xiaomi, Redmi and POCO smartphone owners often see an icon on their desktop called “Security” or “Security” that many users perceive as a common antivirus, but the real functionality of this component is much broader and deeper. The security core is a centralized tool for managing device resources that is integrated into the shell of MIUI and HyperOS.

This app doesn't just scan files for threats, it regulates all running processes, controls access to personal data, and optimizes power consumption. Understanding how this module works will allow you to significantly improve the stability of your gadget and extend its battery life. In this article, we will discuss in detail the protection architecture, available settings and hidden features that not everyone knows about.

It is important to note that removing or forcing this application to stop can lead to malfunctioning of the operating system. The system monitor is a critical element of the manufacturer's ecosystem, providing a balance between performance and protection.

Main functions and purpose of the protection module

The application’s main objective is to create a secure environment for storing personal data and banking applications. The antivirus engine built into the system uses databases from leading global vendors such as Avast and AVL. This allows you to detect malicious code, Trojans and spyware in real time, even if you downloaded a file from an unverified source.

But virus protection is just the tip of the iceberg, and the module is actively optimizing memory by closing down background processes that consume CPU resources, especially in budget smartphones, where every megabyte of RAM is counted, and it analyzes usage patterns and decides on its own which applications can be “freezed” without compromising the user experience.

• 🛡️ Payment protection: Automatic scanning of the environment before launching banking applications and blocking suspicious Wi-Fi networks.
• 🔋 Charge control: deep diagnosis of battery status and identification of programs causing rapid discharge.
• 🚫 Blocker: filtering incoming calls and SMS from fraudsters and advertising services based on updated databases of numbers.
• 📡 Traffic monitoring: detailed accounting of mobile and Wi-Fi Internet consumption for each installed application.

The application licensing function deserves special attention. APK-If the signature is changed or the file is modified, the user will receive a warning, which helps to avoid installing fake versions of popular programs that may contain hidden miners.

Permit and confidentiality management

With modern versions of MIUI and HyperOS, the privacy section is taken to a new level. The security application allows you to customize in detail what data each application installed can request. You can deny access to geolocation, microphone or contacts for specific programs, even if they require it to work.

⚠️ Warning: Forcing a ban on critical permissions (such as network access for the messenger) can lead to unstable operation of the application or its constant crashes.

One of the most useful features is Virtual Identity (Blank). ID). When an application requests access to unique device identifiers (IMEI, MAC-The address, the system can provide fake data, which protects your real identity from being collected by advertising trackers, and the functionality of the program does not suffer.

It also has a privacy feature that hides the contents of notifications on a locked screen, so you can set the notifications to display the message so that the text is only visible after unlocking your smartphone on your face or fingerprint, which prevents information from leaking if you leave your phone on a desk in a public place.

For critical files and applications, you can create a separate password-protected profile where you can transfer your selected apps, photos and files, and they will be completely invisible to an outsider, even when you connect your phone to your computer.

Memory Cleansing and Speed Optimization

Over time, a huge amount of cached data accumulates in the memory of a smartphone: temporary files, remnants of deleted programs, thumbnails of images and error logs. The security application allows for deep cleaning, freeing up gigabytes of free space.

Acceleration doesn't just shut down applications, it defragments RAM, it helps you run heavy games or resource-intensive tasks without delay, but it's worth noting that the constant forced memory cleanup can have the opposite effect: the system has to reload frequently used applications, which increases battery consumption.

There's also a Deep Cleaning tool that analyzes large files, duplicate photos, and rarely used apps, and the user can manually choose what to delete and what to leave behind, a safer approach than automatically cleaning everything.

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Do not use the "Accelerate" function before launching heavy games. Modern processors allocate resources efficiently themselves, and artificially closing background services can disrupt the work of gaming services.

Antivirus protection and scanning of devices

The built-in antivirus works at the core level of the system, which provides a high level of protection without the need to install third-party solutions. It checks not only files in memory, but also installation packages when they are downloaded or transmitted over Bluetooth. If the file is marked as dangerous, its download will be blocked.

Regular scanning allows you to identify potentially unwanted programs (PUPs), often disguised as useful utilities, but in the background show ads or collect statistics. The security engine checks file signatures with a cloud database that is updated several times a day.

Special attention is paid to connection security: when trying to connect to a public Wi-Fi network, the system analyzes encryption protocols. WEP), You'll get a notification, and you'll also be checked. DNS-Threats that could redirect you to phishing sites.

• 📱 Scanner. QR-Codes: built-in link verification before moving to the site.
• 🔒 Protection SIM-Cards: Notification when changing SIM-Cards (requires settings in your Mi Account).
• 🌐 Anti-phishing: blocking the transition to sites seen in theft of data.
• 📂 Storage scanner: search for files with personal data (passports, cards) left in the public domain.

It’s worth noting that for maximum effectiveness, antivirus databases need to be up to date.The app automatically updates them when you connect to Wi-Fi, but you can initiate a manual update in the scanner settings.

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Xiaomi’s built-in antivirus is enough for 95% of users, and installing an additional antivirus will create a conflict of processes and significantly reduce the performance of the device.

Configure the call and message blocker

Spam calls and emails are the scourge of modern smartphones. The built-in blocker allows you to create a reliable shield against unwanted communication. It works at the system level, so the caller will hear the signal "busy" and your phone will not even vibrate.

You can set up multiple filtering levels, and the simplest is Quiet Mode, which blocks all calls except those on the favorites list, and the more flexible option is to block hidden numbers or numbers from other regions, and the database of advertising numbers is updated over the Internet, which allows you to effectively fight auto callers.

⚠️ WARNING: When you enable the hard lock of Unknown Numbers, you may miss an important call from a courier or doctor if their number is not saved in your notebook.

For SMS There's a separate tab where you can create keywords to block, for example, by adding the words "credit," "winning," or "share," you automatically hide all the messages that contain that text. SMS-spam from financial institutions.

All blocked calls and messages are stored in a separate log, so you can check who tried to reach you at any time, and if an important number was blocked incorrectly, it can be quickly added to the whitelist.

Parental control and child regime

Child Mode makes a smartphone a safe device for a child, and you can limit your time using the device, block access to certain apps (such as YouTube or shopping games), and prohibit calls to paid numbers.

In this mode, the interface is simplified to a minimum, leaving only the allowed icons. The child will not be able to accidentally delete system files, change settings or go online without your knowledge. PIN-Unlocking the code by fingerprint of the owner.

There's also an app-specific traffic restriction feature, which means you can set a limit of, say, 500MB per month for video services, and then you can block access until next month, which helps you control mobile Internet spending if kids use the phone.

Frequently Asked Questions (FAQ)