Owners smartphones Xiaomi Redmi are often faced with the sudden appearance of intrusive advertisements, strange pop-ups, or a sharp decrease in device performance. Such symptoms almost always indicate that malware has entered the system. Viruses on Android can hide under the guise of harmless utilities, games or even system updates, damaging the security of personal data.
Timely detection and removal of threats is critical to maintaining the confidentiality of your information. In this article, we will look at effective methods of fighting viruses, ranging from simple antivirus scans to completely resetting the device to factory settings. You will learn how to recognize an infection and what steps to take to clean it Redmi.
Ignoring the problem can lead to the theft of passwords from banking applications or blocking of the phone by attackers. Therefore, you need to act quickly and consistently, using proven system tools and third-party software. Don't panic: in most cases, the device can be saved without contacting a service center.
The first signs of infection of a Redmi smartphone
Understanding that your smartphone is infected is half the success in the fight against the virus. Malicious apps rarely manifest themselves immediately, but over time their activity becomes noticeable even to an inexperienced user. If you notice that the battery is draining faster than usual, and the phone is heating up even in standby mode, this is an alarm bell.
Often a virus disguises itself as a system process, consuming processor resources in the background. The appearance of unknown icons on the desktop or in the application menu also indicates an unauthorized installation of software. It is especially dangerous if advertising appears on top of other windows or when the screen is unlocked.
⚠️ Attention: If banners appear on the lock screen requiring you to transfer money for unlocking, do not send funds under any circumstances. This is fraud, and payment will not restore access to the device.
Another clear sign is the spontaneous installation of applications from Google Play or unknown sources. The user may not initiate the download, but the app is already in memory. In such cases, you must immediately check the list of installed apps and remove suspicious objects.
Checking the device with the built-in security scanner
The shell MIUIinstalled on phones Redmihas a built-in security module, which is often overlooked. This tool is based on engines from well-known antivirus laboratories and is capable of detecting most common threats without installing additional software. Starting the scan takes only a few minutes.
To get started, open the application Securitythat is preinstalled on the system. It usually has a green icon with a lightning bolt or shield. In the main menu, select the item Antivirus and press the button Check. The system will scan all installed applications and files for known virus signatures.
Before starting the scan, make sure that the antivirus databases are updated. Click on the gear icon in the corner of the screen and select “Update virus databases.”
If a threat is found, the system will offer to immediately delete the malicious file or move it to quarantine. Agree with the action and wait for the process to complete. In some cases, you may need to restart the device to completely delete the file from RAM.
The built-in scanner effectively fights Trojans and adware, but can miss complex spyware. Therefore, after checking with the built-in tool, it is recommended to use additional methods of system analysis for complete confidence in the cleanliness of the device.
The built-in MIUI antivirus is the first line of defense, which should be used before installing heavy third-party applications.
Removing viruses through third-party antiviruses
When the built-in tools are not enough, specialized applications from leading vendors come to the rescue cybersecurity. apps like Dr.Web Light, Kaspersky Internet Security or Malwarebytes have deeper search algorithms and can find hidden threats missed by a standard scanner.
Download the antivirus exclusively from the official store Google Play. Avoid sites that offer “hacked” versions of paid antiviruses, since this is where real viruses are most often distributed under the guise of protection. After installation, run a full system scan.
- 🔍 Dr.Web Light: Excellent at finding Trojans and network worms, works quickly even on older Redmi models.
- 🛡️ Kaspersky: Offers comprehensive protection, including anti-theft and checking links in the browser.
- 🧹 Malwarebytes: Specializes in removing adware and spyware modules.
After detecting threats, follow the application instructions to neutralize them. Some viruses may resist removal, requiring administrator rights. In this case, the antivirus will tell you how to revoke the rights of the malicious application before deleting it.
⚠️ Attention: Do not install several active antiviruses at the same time. They can conflict with each other, causing system freezes and false positives.
Regular use of a third-party antivirus helps keep the system clean in the long run. Set up an automatic scan on a schedule, for example, once a week at night, when the phone is not actively used.
Search and remove malicious applications manually
Some types of malware are so clever that they hide their icon from the application menu, but continue to work in the background. To find them, you need to go to the app management settings. Go to the section Settings → Applications → All applications.
Carefully study the list. Look for apps without a name, with a blank icon, or a strange name that resembles a system process (for example, misspelled). If you see an application that you did not install and it consumes a lot of resources, it is a candidate for removal. System Update misspelled). If you see an application that you haven't installed and it's consuming a lot of resources, it's a candidate for removal.
Settings → Applications → All applications → [Suspicious application] → UninstallIf the button Delete is inactive (gray), then the virus has been granted administrator rights devices. To fix this, go to Settings → Passwords and security → Privacy → Device administrators. Uncheck the suspicious application, then return to the applications menu and delete it.
What to do if the application is not uninstalled?
If standard deletion does not help, try booting the phone into safe mode. To do this, hold down the power button, and when the menu appears, press and hold the “Shut Down” item until you are prompted to enter safe mode. In this mode, only system applications work, which will allow you to remove the virus without interference.
Pay special attention to browsers and memory cleaning apps downloaded from unverified sources. Often they are the source of the problem. Removing such apps may require several attempts if the virus has penetrated deep into the system.
Clearing the browser cache and resetting settings
Often the source of the problem is not the applications themselves, but the accumulated browser cache containing malicious scripts or redirects. Clearing your browser data helps you get rid of pop-up ads and redirects to phishing sites. This is a safe procedure that will not affect your personal photos or contacts.
Go to the settings of your specific browser (Chrome, Yandex, MI Browser), find the section History or Privacy. Select Clear history and make sure that the boxes next to “Cookies” and “Images and other cached files” are checked. Confirm the action.
| Action | Impact on data | Effectiveness against viruses |
|---|---|---|
| Clear cache browser | Deletes temporary files and cookies | Low (web threats only) |
| Uninstall applications | Deletes the app and its data | Medium (depending on the type virus) |
| Reset to factory settings | Complete deletion of all user data | High (guarantees cleaning) |
If simple methods do not help, there is a radical, but most reliable way - resetting to factory settings (Hard Reset). This procedure will return the phone to the condition it was in when purchased. All user data, including photos, contacts and applications, will be permanently deleted.
⚠️ Attention: Before performing a reset, be sure to back up your important data to cloud storage or your computer. After the reset, it will be impossible to restore information without a backup.
To perform a reset, go to Settings → About phone → Reset settings → Delete all data. Confirm the action by entering your screen unlock password. The phone will reboot and begin the cleaning process, which may take from 5 to 15 minutes.
☑️ Preparing for a hard reset
Measures to prevent re-infection
After successfully removing the virus, it is important to prevent it from returning. The main cause of infection is the installation of applications from unknown sources. In the settings Redmi by default, it is prohibited to install APK files from outside, and this function should not be disabled unless absolutely necessary.
Regularly update the operating system and installed applications. Developers Android and Xiaomi constantly close security vulnerabilities in new software versions. Go to Settings → About phone → MIUI version and check for updates.
Be careful when following links in SMS messages from unknown numbers or in instant messengers. Phishing sites often disguise themselves as official resources of banks or services, trying to lure data or force you to download a malicious file.
The main security principle: if an offer looks too good to be true, or requires urgent action, it is most likely a scam.
Use two-factor authentication for important accounts (Google, social networks, banks). Even if the virus is able to intercept your password, attackers will not be able to log into your account without a second confirmation code sent to the device.
Is it possible to remove a virus without resetting the settings?
In most cases, yes, if the virus has not received superuser rights (Root). Built-in antivirus or third-party software like Dr.Web can remove most threats. A reset is required only in advanced cases when a virus has become embedded in the system.
Why does the phone slow down after removing the virus?
The malware could damage system files or leave behind “garbage” in the registry. Try clearing the cache of all applications or performing a factory reset if the problem persists.
Is Redmi protected from viruses by default?
MIUI has basic protection and a scanner, but it does not guarantee 100% security. The user must maintain digital hygiene: do not download files from dubious sites and monitor application permissions.
What to do if a virus requires money to unlock?
This is a blocking banner. Don't pay money. Try booting into safe mode (holding the power button) and removing the application that causes the blocking through the settings.