How to check a Xiaomi phone for viruses: a complete guide

Smartphones Xiaomi with shell MIUI and new HyperOS are famous for their performance, but like any devices based on Android, they are at risk of infection with malware. Users often encounter intrusive advertising, strange system outages, or sudden data usage, which may indicate hidden threat activity. It is important to understand that an open-type operating system requires the owner to have a certain digital hygiene and the ability to detect a problem in a timely manner.

Unlike closed ecosystems where only trusted applications are installed, in the Android environment the risk of picking up a Trojan or miner is much higher, especially when downloading apps from third-party sources. Phone owners Redmi and Poco have at their disposal powerful built-in protection tools, but in complex cases it may not be enough. Below we will analyze in detail how to identify a threat using both standard tools and specialized software.

Often, users ignore the first symptoms of infection, attributing the brakes to outdated hardware or incorrect operation of updates. This is a dangerous misconception, since modern viruses can masquerade as system processes or legitimate applications. If your gadget begins to behave inappropriately for no obvious reason, you need to immediately diagnose it before the malicious code causes irreparable damage to personal data.

First signs of infection: what to look for

Detecting the presence of malware is not always easy, since virus developers strive to make them invisible to the user. However, there are indirect signs that should alert the device owner. If you notice that the battery is draining abnormally quickly, even in standby mode, this may indicate the operation of a hidden miner. Trojans Often use processor resources to perform third-party tasks, which leads to overheating of the case.

Another obvious symptom is the appearance of advertisements in unexpected places: on the desktop, on top open applications or in the notification shade. Legitimate apps rarely demonstrate such intrusiveness unless you have installed a specific launcher with advertising. It is also worth checking the mobile data consumption statistics: a sharp jump in traffic consumption often indicates that the application is secretly transferring data to a remote server.

⚠️ Attention: If messages appear on the screen about blocking the device with a requirement to pay for unlocking, do not transfer money under any circumstances. This is phishing, and payment will not restore access to the phone.

Slowdown of the interface and spontaneous opening of applications are also alarm bells. Malware can take over control of the system by creating task queues that slow down the main interface. In some cases, a virus may block access to security settings or the application store, trying to prevent its removal.

Built-in antivirus in MIUI and HyperOS

The Company Xiaomi has integrated into its firmware an effective security scanner running on an antivirus engine Avast or AVG (depending on the region and software version). This tool is the first line of defense and does not require the installation of additional software. To start the scan, you need to open the pre-installed application Security, which is usually located in the "Tools" folder on the desktop.

Inside the application, select the item Antivirus and press the button Check. The system will begin scanning installed apps, files, and system partitions for known threat signatures. The process may take from one to five minutes depending on the amount of memory and the number of installed applications. During the scan, the algorithm checks the hash sums of files against a virus database.

If a threat is detected, the system will offer to immediately remove the infected file or application. The built-in scanner can also check the security of Wi-Fi networks and identify risks when installing applications from unknown sources. Regular use of this function helps keep the system clean without the need for third-party intervention.

It is important to note that the built-in antivirus databases are updated automatically when connected to the Internet. If your phone has not been online for a long time, the effectiveness of the scan may be reduced. Before starting the scan, make sure that the device is connected to a stable network Wi-Fi or mobile data to update signatures.

Using Google Play Protect

Service Google Play Protect works at the operating system level and scans applications both during installation from the store and in the background. This is a global protection mechanism that is present on all certified Android devices, including smartphones Xiaomi. It analyzes the behavior of applications and checks them against Google's huge database containing billions of code samples.

To run a manual check through this service, open the application Google Play Market. Click on the profile icon in the upper right corner of the screen and select Play Protection. In the menu that opens, you will see the security status of your device and a Checkbutton. Clicking on it initiates a deep scan of all installed apps.

The advantage Play Protect is its ability to detect potentially unwanted apps (PUPs), which are not technically viruses, but can annoy the user with advertisements or data collection. Unlike third-party antiviruses, this tool minimally loads the system and works unnoticed by the user, providing constant monitoring.

What to do if Play Protect does not find a virus?

Sometimes malware disguises itself as system processes and bypasses Google's basic scan. In such cases, the use of specialized antiviruses with heuristic analysis or manual removal through safe mode is required.

It is worth remembering that the effectiveness of protection directly depends on the timeliness of updates to Google Play services. If your phone has not received system component updates for a long time, the level of protection may be less than optimal. Regularly check for updates in the application store settings.

Third-party antivirus solutions

When built-in tools are not enough, specialized antivirus systems from leading cybersecurity vendors come to the rescue. apps like Kaspersky, Dr.Web, ESET or Bitdefender offer deeper system analysis, including checking archives, scanning RAM, and real-time protection. Installing such software turns your smartphone into a protected fortress.

When choosing an antivirus, you should pay attention to the presence of the Anti-Theft function and web protection, which block transitions to phishing sites. Many of these apps have lightweight versions that don't consume much battery power. After installation, you must grant the application the necessary permissions to access the file system and device administrator rights.

Name of the antivirus	License type	Key feature	Impact on the battery
Kaspersky Internet Security	Freemium	Powerful anti-phishing	Average
Dr.Web Light	Free	Treatment of already infected files	Low
ESET Mobile Security	Paid/Trial	Security audit Wi-Fi	Low
Bitdefender Antivirus	Free	Automatic protection in the background	Minimal

Installing several antiviruses at the same time is strictly not recommended. They may conflict with each other, trying to gain exclusive access to system resources, causing the phone to freeze. Choose one reliable solution and use it in conjunction with the built-in scanner Xiaomi.

Manual scanning and removal of malicious applications

Sometimes a virus is not detected by scanners, but its presence is obvious from the behavior of the system. In such cases, it is necessary to conduct a manual audit of installed applications. Go to Settings and select section Applications -> All applications. Carefully scroll through the list, paying attention to apps without an icon or with a transparent icon.

Often, malware is hidden under names similar to system services, such as "Android System", "Update Service" or "Wi-Fi Helper", but with a suspicious developer name. If you see an app that you can't remember when you installed, or that requires strange permissions (for example, SMS access for a flashlight), you should uninstall it immediately.

To uninstall, click on the suspicious app and select the button Delete. If the button is inactive, it means that the virus has acquired device administrator rights. In this case, you need to go to Settings -> Passwords and security -> Privacy -> Special access rights -> Device administrator applications and revoke the rights from the malware.

After removing suspicious software, it is recommended to clear the browser cache and download history, as installation files of malware may remain there. Do not forget to regularly check the list of installed apps, especially after installing software from unverified sources.

Safe mode for deep cleaning

If a virus blocks the removal of applications or the phone constantly reboots, the only way out is to start in safe mode. In this mode, only system applications are loaded, and all third-party software, including viruses, remains inactive. This allows you to calmly find and remove the malicious app without resistance on its part.

To enter safe mode on most smartphones Xiaomi, hold down the power button until the shutdown menu appears. Then press and hold the item Turn off on the screen with your finger until you are prompted to reboot into safe mode. Confirm the action and the phone will restart with the word “Safe Mode” in the corner of the screen.

While in this mode, go to the application settings and remove any suspicious apps that you could not remove in normal mode. It is also worth clearing the cache of problematic applications. Once the cleaning is complete, simply restart your phone as usual to exit Safe Mode.

⚠️ Note: While in Safe Mode, some phone features may not be available and the interface may look different. Don’t be alarmed, this is normal system behavior for diagnostic purposes.

Radical measures: resetting to factory settings

If none of the above methods helped get rid of the virus, and the phone continues to work incorrectly, the last resort is a complete data reset. This procedure will return the device to its out-of-the-box state, removing absolutely all data, settings and, unfortunately, viruses. Before doing this, be sure to save important photos and contacts to the cloud or to your computer.

To perform a reset, go to Settings -> About phone -> Reset settings -> Delete all data. The system will ask you to confirm and enter your screen unlock password. The process will take a few minutes, after which the phone will turn on like new. This is a guaranteed way to remove any software infection.

After resetting, do not rush to restore all applications from a backup copy at once. First, set up your phone as new and install only the essential apps. If a virus was embedded in an application, its automatic restoration from a backup could infect the system again. Install the software gradually and check its stability.

Can a virus remain after a reset?

In extremely rare cases, if a virus has penetrated the system partition (rootkit), a regular reset may not help. Then you need to flash the device via a computer using the official Mi Flash Tool utility.

Prevention and rules of digital hygiene

The best protection against viruses is prevention. Never download applications from dubious sites, forums or file hosting services. Use only the official store Google Play or proven alternatives like Galaxy Store or Huawei AppGalleryif there is no official store. The risk of catching an infection from a third-party resource is disproportionately higher.

• 🚫 Never click on links in SMS from unknown numbers that promise winnings or card blocking.
• 🔒 Disable the installation of applications from unknown sources in the browser and file manager settings.
• 🔄 Regularly update your operating system and applications to close security vulnerabilities.
• 🛡️ Use strong passwords and two-factor authentication for your Google account.

Be careful when granting permissions to applications. If a simple calculator asks for access to your contacts and microphone, this is a clear sign of fraud. Read the permission prompts carefully when you first install any app. Common sense and attentiveness are your main allies in the fight against cyber threats.

Can an antivirus remove a virus without losing data?

In most cases, yes. Modern antiviruses can isolate or delete a malicious file without affecting personal photos, contacts and documents. Data loss occurs only with a complete reset or if the virus itself damaged the files with the encryptor.

Is it true that you cannot catch a virus on Xiaomi?

This is a myth. Although MIUI has enhanced security, it is based on Android, which is vulnerable to malware. Viruses can penetrate through the browser, third-party applications or phishing links, regardless of the phone brand.

What to do if, after removing the virus, advertising remains?

You may not have removed all components of the virus or it may have installed additional modules. Try checking the list of applications for duplicates or apps without a name. Also clear your browser data, as advertising may be a result of subscribing to site push notifications.

Do I need an antivirus if I don’t go to suspicious sites?

It is advisable to have at least basic protection. Malvertising code can enter your phone through advertising on legitimate websites (malvertising) or through vulnerabilities in other applications. The built-in MIUI scanner is usually sufficient for a cautious user.

How to distinguish a system application from a virus?

System applications usually have the Android or manufacturer logo, they cannot be deleted (only disabled), and they are located at the beginning of the list or in the "System" folder. Viruses often have strange names, they can be removed, and they require unusual permissions.