Step-by-step, remove viruses from Xiaomi phone: from diagnosis to recovery

Viruses on Xiaomi smartphones are a much more common problem than you think, even if you don't download suspicious ones. APK-If you avoid questionable sites, malware can penetrate vulnerabilities in the system, banner ads or even legitimate applications with hidden modules. MIUI, where protection is weakened.

Unlike computers that run antiviruses in the background, on Android, many malware masquerades as system processes, consumes resources and steals data from contacts to bank details. Worst case scenario: the virus gains root rights and blocks access to settings, making the phone almost unmanageable. But don't panic: 90% of the time, the problem can be solved without going to the service center.

This article is not just a list of standard “installe antivirus” tips, but will look at specific symptoms for Xiaomi devices (including the Redmi Note, POCO and Mi series), diagnostic methods using hidden MIUI tools, and removal methods – from manual cleaning to complete reset with data storage, and focus on viruses that block access to Settings or simulate system alerts.

Signs of infection: how to recognize the virus on Xiaomi

The first step is to confirm that the problem is indeed malware, not hardware failures or MIUI errors. Viruses on Xiaomi often manifest themselves in non-obvious ways that users blame on the "brake" of the phone.

• 🔋 Dramatic reduction in battery life (even in standby mode) Viruses often trigger background processes that consume up to 30% of charge per hour.
• 📱 Spontaneous reboots or Fastboot mode without you, especially when connected to Wi-Fi or mobile.
• 💰 SMS to pay numbers or debits from your account. Some viruses connect subscription fees through a service. USSD-request.
• 📎 Appearance of unknown apps on menus or desktops (e.g. com.android.system.update or Service Menu).
• 🔒 Block access to settings (when you click on Settings) → Security phone reboots).

Especially insidious viruses that masquerade as system updates MIUI. For example, a pop-up with the suggestion to “update the firmware” can be a trap to obtain root rights. If you see such a notification, never agree – official Xiaomi updates are installed only through Settings → About Phone → System Update.

⚠️ Warning: If the phone starts showing ads on the lock screen or in the call menu, this is a sure sign of an adver virus (for example, HiddenAds). APK-files from torrent trackers or “hacked” versions of popular games.

How to check Xiaomi for viruses without antivirus

Before installing an antivirus (which itself may be malicious), use the built-in MIUI tools, which are less well known but effective for initial diagnosis.

Method 1: Security App (Security App)

1. Open the Security app (the shield icon).

2. Go to the Scan section → Deep Check.

3.Please note System Threats and Suspicious Applications.

If nothing is found here, but the symptoms persist, the virus may be deeper, for example, in system files or the Android kernel, in which case only a manual check will help.

Method 2: Analysis of active processes through ADB

For advanced users: connect your phone to your PC and follow the command:

adb shell ps -A | grep -i "suspicious"

Look for suspicious names like com.android.update, system.service, or android.secure (if you haven't installed them).

Manual removal of the virus: step-by-step instructions

If you've identified malware, try removing it manually, a method that works for most root-infringing adver viruses and Trojans.

Step 1: Remove through application settings

1. Go to Settings → Applications → Application Management.

2. Click on the three dots in the upper right corner and select Show System Processes.

3.Look for apps with suspicious names (e.g. com.android.system.update, Flash Service).

4. Press Remove or Disable (if the delete button is inactive).

Step 2: Clearing the cache and data

Some viruses leave tails in the cache of system applications to remove them:

1. Open the Settings → Memory.
2. Select Memory Cleanup → Deep Cleanup.
3. Delete the cache for Google Play Services, Google Play Services and the Browser.

Disconnect mobile internet and Wi-Fi

Backup of important data

Record the names of suspicious applications

Prepare a charged phone (minimum 50%)-->

⚠️ Note: If you try to remove the application, you see an error "Delete is impossible", the virus has received administrator rights. → Security → Device administrators and uncheck the checkmarks from unknown programs.

Step 3: Remove via Safe Mode

Safe Mode only downloads system applications, blocking viruses.

1. Press the Power button before the turn off menu appears.

2. Hold your finger on the item "Switch off" - a prompt will appear to go to Safe Mode.

3. Repeat the steps to remove the virus in safe mode (see above).

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If the virus blocks safe mode entry, the only way out is through Fastboot or reset to factory settings.

Removal of root viruses: emergency measures

If a virus has obtained root rights, standard methods will not work.

• 🔐 Block access to settings and recovery.
• 📲 Replace system files, making the phone unmanageable.
• 💻 Install backdoors for remote management.

In this case, there are two options:

Option 1: Fastboot firmware (without data loss)

1. Download the official firmware for your model from the Xiaomi Firmware website.

2. Unpack the archive and find the file. flash_all.bat (for Windows or flash_all.sh (for Linux/Mac).

3. Connect the phone in Fastboot mode (clip Volume Down + Power).

4. Run the firmware script.

Important: When you run through Fastboot, select the option flash_all_except_storage, to save user data (photos, contacts).

Option 2: Full reset (Hard Reset)

If the firmware does not help or the virus blocks Fastboot:

1 Enter Recovery (click Volume Up + Nutrition).

2. Select Wipe Data → Wipe All Data.

3. Confirm the reset (all data will be deleted!).

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Before reset, remove the memory card – some viruses save their files in the DCIM/.thumbnails or Download folder.

How to protect Xiaomi from viruses in the future

Even after the virus is successfully removed, the phone remains vulnerable if you don't take precautions.

• 🔒 Disable the installation from unknown sources: Settings → Security → Installation from unknown sources (disable for all browsers).
• 🛡️ Update. MIUI Up to the latest version: Settings → The phone. → Update of the system: new versions close critical vulnerabilities.
• 📱 Install a reliable antivirus (for example, Malwarebytes or Bitdefender – they do not conflict with the software). MIUI).
• 🔍 Check application permissions: if the messenger asks for access to SMS or contacts for no reason – delete it.

Pay special attention to the unlocked bootloader, and if you've ever unlocked Bootloader to install custom firmware, viruses can penetrate deeper into the system to close the bootloader back:

1. Go to the Mi Unlock website.
2. Download the Mi Flash Unlock tool and follow the instructions.
3. Connect your phone in Fastboot mode and execute the command fastboot oem lock.

⚠️ Note: After blocking the bootloader, you will not be able to install unofficial firmware, but protection against viruses will be significantly increased.

Frequent errors in removing viruses from Xiaomi

Many users compound the problem by following questionable advice from the Internet.

• 🚫 Install antiviruses from unknown sources – they can themselves be viruses (for example, Fake) AV).
• 🚫 Reset settings through Settings → Reset if a virus blocks access to this menu - it can survive a reset.
• 🚫 Ignore security updates in older versions MIUI Vulnerabilities that exploit 80% of modern viruses.
• 🚫 Trying to delete system files manually without knowing the structure of Android – this can lead to a “brick” (breakdown) of the phone.

Avoid “magic” solutions like:

• “Just Flash Your Phone Through SP Flash Tool” is a tool for Mediatek, and Xiaomi uses Qualcomm.
• “Install Magisk to remove the virus” – Magisk itself requires root, which the virus can already control.

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If the virus is still slowing down after you remove it, check it for mining botnets. Some viruses (like Loapi) continue to work in the background even if their icon has disappeared from the menu.

FAQ: Answers to Frequent Questions