How to completely cleanse Xiaomi Redmi 9C from data and viruses

Xiaomi Redmi 9C, released in 2020, is still popular because of its availability and reliability. However, as time goes on, any gadget starts to work slower, digital debris accumulates in memory, and unwanted programs can settle in the system. Sooner or later, the owner faces the question of how to completely clean the device to return it to its original speed or safely transfer to a new owner.

A complete cleanup procedure known as Hard Reset or factory reset removes all user information from the device’s internal memory.It’s a radical but often the only effective way to solve software errors, interface freezes, or malware infection. It’s important to understand that once you do this, it’s almost impossible to recover deleted photos, contacts, and messages without a pre-built backup.

In this guide, we will take a detailed look at all available methods for cleaning your Redmi 9C. We will look at the standard reset via the settings menu, the use of the Recovery Engineering Menu and special commands. You will learn how to properly prepare the device so that you do not lose important data, and what to do if the system is locked or not booting.

Preparing a smartphone for complete data deletion

Before you start active, you need to perform a number of preparatory procedures. Ignoring this stage can lead to locking the device with a Google account (FRP) or loss of critical information. First of all, make sure that the battery charge is at least 50-60%. The process of formatting internal memory is energy-intensive, and suddenly turning off the smartphone at this point can damage system files.

Back up all the important data. Xiaomi owners can use the built-in Mi Cloud or sync with Google Drive. Check the folders with photos, documents and downloads. If you have the physical ability, copy the contents of the internal memory to a computer or external drive through the computer. USB-cable.

⚠️ Warning: Be sure to unplug your Mi and Google account before resetting if you plan to sell the phone.Otherwise, the new owner will not be able to activate the device without entering your passwords due to the theft protection system.

Also, don’t forget to remove the microSD card and SIM-The system usually asks for permission to format the map before the procedure begins. SD-Cards, physical extraction ensures that your personal files on external media will not be affected by the random choice of the "clear all" option".

Resetting method through system settings

The safest and easiest way to clean up the Xiaomi Redmi 9C is to use the built-in MIUI settings menu.This method is suitable for cases where the phone turns on, the screen responds to touches, and you have access to the desktop. The algorithm of actions may vary slightly depending on the firmware version, but the overall logic remains the same for all devices of the brand.

To start, go to the main menu and find the Settings icon. In the list that opens, scroll down to About Phone. This is where the basic management tools are hidden. You'll need to find Reset, which is usually located at the bottom of the screen. The system will offer several options, but we're interested in the option to erase all data.

• 📱 Click on the "Erase all data" button in the reset menu.
• 🔒 Enter a pattern lock or digital screen unlock password to confirm identity.
• ✅ Check the box against the risk of data loss warning.
• 🔄 Press the red confirmation button and wait for the reboot.

Once confirmed, the system will alert you that all files will be deleted. If the device has a Mi Account password, the system will require you to enter it to turn off the protection. The cleaning process takes 5 to 15 minutes depending on the amount of memory filled. The phone will reboot several times, after which the screen of the initial setting will appear, as when you first turn on from the store.

💡

If you do not plan to use the phone further, do not sign in to the Mi Account at the initial setup stage after the reset – this will make life easier for the new owner.

Using Recovery Mode for Cleaning

There are different situations: the smartphone can not boot, hang on the logo or react to touch with a long delay. In such cases, the standard settings menu is not available, and you have to use Recovery Recovery mode, which works at the bootloader level and does not require access to the operating system.

To get into the Recovery menu on Redmi 9C, you need to turn the device off completely. Then press the volume button and the power button at the same time. Hold them until the Mi logo appears, then release the power button, but keep the volume down until the main recovery menu appears.

The navigation in this menu is done with volume buttons (up/down), and the choice is confirmed by the power button. You need to find the Wipe Data item and select it. Then the system will suggest you choose Wipe All Data. Confirm the action by selecting Confirm. After the process, select Back to Main Menu and then Reboot -> Reboot to System.

⚠️ Attention: In Recovery mode, the touch screen does not work. All actions are performed exclusively by mechanical buttons on the body of the smartphone.

Removing viruses and malware

Often, the desire to completely clean up the Xiaomi Redmi 9C comes from intrusive ads, pop-ups, or strange system behavior.These are signs of malware. Although factory resets remove viruses, sometimes it is advisable to first try to find and neutralize the threat without losing data.

The MIUI shell has a powerful antivirus scanner built in. Go to the Security app (green lightning icon) and run a check. The system will scan the installed applications and files for known virus signatures. If a threat is found, follow the recommendations for its removal.

If the standard scanner doesn't work, look at the list of installed applications. Go to Settings -> Apps -> All apps. Look for programs with weird names, missing icons or ones you didn't install yourself. Often viruses masquerade as system processes or useful utilities.

• 🛡️ Check the access permissions in the "Special Features" menu. Viruses often require permissions there to control the screen.
• 📉 You can track battery consumption. Malware is usually very high in the background.
• 🚫 Remove recently installed apps, especially those not downloaded from Google Play.

If the virus blocks the input to settings, try to start the phone in Safe Mode. To do this, when you turn on the device when the logo appears, press the volume button. In this mode, only system applications load, which allows you to safely remove the malicious file through the application menu.

Cleaning cache and temporary files

It doesn't always require a complete device. Sometimes the phone starts to slow down due to the overgrown app cache and system debris. Clearing temporary files is a safe procedure that doesn't affect your personal photos, contacts or correspondence, but can free up gigabytes of space.

Use the built-in Cleanup app in the tool folder or via the Security menu.Click the Clean button to remove temporary files, remnants of deleted apps and advertising debris.It is also recommended to regularly clean the cache of heavy apps like Telegram, WhatsApp and YouTube, as they tend to accumulate huge amounts of data.

For a deeper cleanup, you can use Deep Cleaning mode in the same security application, which analyzes large files, rarely used apps and duplicate photos, and be careful when selecting files to delete in this mode, so that you do not accidentally erase the necessary documents.

Special attention should be paid to the Google Play Store cache. If the app store is not working properly, go to Settings -> Apps -> All Apps, find the Google Play Store, select Memory and click Clear Cache. This often solves problems with downloading updates.

Data recovery after resetting

Once you have successfully cleaned the Xiaomi Redmi 9C and the smartphone has restarted, the recovery phase begins. When you first turn on, the system will suggest connecting to the Wi-Fi network, a mandatory step to activate the device and check for backups.

Sign in to your Google account that was used before. The system will automatically prompt you to restore your contact list, installed apps and settings from cloud storage. If you used Mi Cloud, log in to your Mi Account to recover photos and notes. The process can take time depending on Internet speed and data volume.

⚠️ Note: When you restore from a backup, the applications will only be downloaded, but you will have to re-authenticate in each of them (banks, social networks, mail).

If you have a local backup copy on your computer or SD-map, connect the media to your phone and use the Restore from local copy in the settings menu or in the Mi Cloud app, which will return not only contacts, but also call history, SMS-alarm clocks and messages.

💡

Regularly backing up your data in the cloud is the only way to ensure that your data is safe in the event of any system failure or device loss.