How to check for viruses on Xiaomi phone: expert guide

Modern Xiaomi smartphones running the shell MIUI or the new HyperOS, have powerful built-in protection, but the risk of infection with malware still exists. Most often, users install applications from third-party sources, not knowing that they are downloading a Trojan or a miner. The first signs of problems are sudden advertising on the desktop, fast battery discharge and heating the case in downtime.

You need to respond immediately to any anomalies in the operation of the device, as modern viruses can disguise themselves as system processes. In this article, we will discuss in detail how to conduct a complete diagnosis of the gadget using both standard system tools and specialized software. Ignoring symptoms can lead to theft of personal data, including passwords from banking applications.

It is worth noting that you should not panic ahead of time, as many of the “symptoms” can be caused simply by a malfunction of a particular application. However, a comprehensive check will never be unnecessary, especially if you often download files from unverified sources.

Use of the built-in "Security" application

The first and most affordable diagnostic tool is the Security app, which is not just a shortcut for settings, but a full-fledged antivirus software developed in collaboration with leading cybersecurity labs, and it is enough to open the app and click on the large green “Verify” button to run the check.

In the scanning process, the system analyzes installed applications, cache files and system partitions for known virus signatures. The algorithm works quickly enough to detect even hidden miners who are trying to mask their activity. If a threat is found, the system will prompt the immediate removal of the malicious file or move it to quarantine.

It is important to update virus databases regularly inside this app, as new threats appear daily. Without current databases, scanning efficiency drops dramatically and you may miss a fresh Trojan. The update process usually happens automatically when you connect to Wi-Fi, but it is better to check this manually.

⚠️ Warning: The built-in scanner is effective against mass threats, but can skip complex, targeted attacks or specific ad modules embedded in legitimate applications.

For more in-depth analysis, you can use the advanced scanner settings, which provide options for checking archives and scanning when you install new programs, and activating these features will create an additional barrier to malicious code entering your Xiaomi system.

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The built-in antivirus Xiaomi is based on the Avast and AVL engines, which provides a high level of protection for everyday use without installing third-party software.

Manual verification of installed applications and permissions

Often, the virus is not a single file, but a legitimately installed application with malicious code embedded. You need to carefully review the list of all installed programs. Particular attention should be paid to applications without an icon, without a name or with suspiciously low rating in the store.

Go to Settings → Apps → All apps and look carefully at the list. Look for programs that you haven’t installed or whose purpose you don’t understand. Often viruses masquerade as Flash Players, Memory Cleaners, or System Updates.

A critical step is to analyze the permissions issued. Malware often requires access to contacts, SMS, microphone and location without explicit need. If a simple flashlight requests access to your messages, this is a clear sign of malicious activity.

• 🔍 Open the list of apps and sort them by installation date to find recent suspicious downloads.
• 🚫 Check applications with device administrator rights in the Settings section → Passwords and security → Confidentiality → Special facilities.
• 📉 Pay attention to apps that consume a lot of traffic or battery in the background.

If you find an application that is not deleted in the standard way (the "Delete" button is inactive), it has received administrator rights. You need to revoke these rights in the corresponding menu first, and then delete them. This is the standard protection against accidental deletion of system files, which is often used by viruses.

Analysis APK-Files and installation of third-party antiviruses

If embedded tools fail and suspicions remain, third-party solutions are worth pursuing, with Kaspersky, Dr.Web and ESET leading the mobile security market, with huge signature databases and heuristic analysis to detect unknown threats.

Before installing a full antivirus, you can check the specific APK-VirusTotal is an aggregator that checks a file with more than 60 antivirus engines at a time, and it's the perfect way to protect yourself before installing a program that's not downloaded from Google Play.

For deep cleaning, it is recommended to install a trial version of one of the paid antiviruses, perform a full scan and, if necessary, treat. Once the threats are eliminated, the application can be removed so as not to waste resources of the system.

⚠️ Warning: Never install two active antiviruses at the same time, which will lead to process conflict, processor heat, and possible system freeze. MIUI.

When installing a third-party antivirus, be sure to give it the necessary permissions to work. Without access to the file system and the right to monitor network activity, the program will not be able to effectively protect your device. Modern antiviruses also know how to check Wi-Fi networks for vulnerabilities.

Diagnostics through debugging mode and ADB

For advanced users who suspect a deep system virus, there is a method of checking through a computer. Using the Android Debug Bridge (ADB) toolkit, you can get a detailed list of all running processes and packages, even those that are hidden from the average user.

First, activate the developer mode. To do this, go to Settings → About Phone and quickly click 7 times on the MIUI Version (or OS Version). After that, the “Developers For” section will appear in the “Additional” menu, where you need to turn on “Debugging by USB”.

By connecting the phone to a computer with an ADB installed, you can execute a command to output a list of all packets, which will allow you to see system processes that are not displayed in the standard application manager.

adb shell pm list packages -f | findstr"name of the suspicious app"

This method requires caution, as removing system packets through ADB can cause the phone to run unstable, use it only if you are confident in your actions and understand the purpose of the removed component. Always back up data before tampering with system files.

• 💻 Install the drivers. ADB and platform tools on your PC.
• 📱 Confirm the debugging request that appeared on the smartphone screen when connecting the cable.
• 📝 Save the process list in a text file for detailed study.

Comparative table of verification methods

To make it easier for you to choose the right diagnostic method, we have prepared a summary table that will help you assess the effectiveness of each method depending on the type of threat and your skills.

As you can see from the table, for most users, a combination of an embedded scanner and periodic third-party antivirus checks are enough, and methods using ADB are left for extreme cases where other methods have not helped to identify the problem.

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Before any deep check, be sure to back up important contacts and photos through Mi Cloud or Google Photos so you don’t lose data in the event of a reset.

Radical measures: reset to factory settings

If none of these methods fix the problem and the phone continues to behave inappropriately, the last and most effective option is a full reset, which will return the device to the “out of the box” state by removing all the data, including viruses.

Before starting the procedure, make sure that the battery is at least 50%. the reset process can take from 10 to 30 minutes, and interrupting the power at this point can damage the software part of the device.

To perform the reset, go to Settings → About Phone → Reset. Select “Erase All Data.” The system will warn you that all files will be deleted. Confirm the action by entering the unlock password or a pattern lock.

⚠️ Warning: Once reset, the phone will be clean. If you restore the backup of the apps, you can infect the device again if the virus was in one of the stored ones. APK-file.

After a reboot, it is recommended not to restore old applications immediately, but to install them again from official stores, which ensures that you do not return malicious code with the data. Checking the phone after reset with the built-in scanner should show 100% cleanliness of the system.

Prevention and Digital Hygiene Regulations

The best protection against viruses is not antivirus, but user caution. Most infections are due to inattention when installing apps or clicking on phishing links, and following simple rules will allow you to forget about viruses forever.

First of all, you have to stop installing applications from unknown sources. MIUI There is a function "High Protection Mode" that blocks the installation. APK-files not from Google Play. Keep this feature enabled permanently.

Update your operating system regularly. In security updates, Xiaomi closes vulnerabilities that viruses can penetrate your phone. It is critical to install security patches even if they don't carry new interface features.

• 🛡️ Do not follow the links from SMS from unknown numbers promising winnings or blocking cards.
• 📱 Avoid using public Wi-Fi networks for banking.
• 🔒 Use complex passwords and two-factor authentication for all important accounts.

Remember, the security of your smartphone is your responsibility first and foremost, and the technology is just a tool to help you, and conscious online behavior minimizes the risk of infection.

Frequently Asked Questions (FAQ)