Xiaomi Redmi Note 9 series mobile devices running MIUI shells can accumulate software errors over time that slow down the system. Users often face a situation where the smartphone starts to “hang”, applications close on their own, or the device simply refuses to boot correctly.
Factory resetting is necessary not only when there are system failures, but also before selling your gadget so that your personal data does not fall into the wrong hands. It is important to understand that formatting is an irreversible operation that deletes all photos, contacts, correspondence and installed applications.
In this detailed guide, we’ll take a look at all the Redmi Note 9 reset methods available, from standard system settings to advanced methods through the Recovery Engineering Menu. You’ll learn how to properly prepare your device, what nuances MIUI shelling has, and how to solve typical cleaning problems. Follow the instructions consistently to return your smartphone to its original speed and stability.
Preparing the smartphone for a complete data reset
Before you start radical measures to clean the memory Xiaomi Redmi Note 9, you need to perform a number of mandatory preparatory steps. Ignoring this stage can lead to the fact that after turning on you will get a “clean” device, but without access to your accounts or with a locked screen due to Google protection. First of all, make sure that the battery is at least 50-60%, as the formatting process can take time and require energy.
A critical step is to back up all of your important data. The MIUI shell provides built-in backup tools, but you can also use cloud services, copy photos and videos to your computer or cloud storage, export contacts to your Google account, and save messenger files if they have important correspondence.
- 📸 Backup photos and videos via Mi Cloud or Google Photos to avoid losing memories.
- 📞 Sync your phone book with your Google account by going to your contacts settings and selecting Export».
- 🔑 Remember or write down the usernames and passwords from your Mi and Google account, as after the reset, the system will require them to confirm ownership.
- 💾 Remove the microSD card if it is installed so that external media are not accidentally formatted along with internal memory.
⚠️ Warning: If you don't remember the password from the Google account that was linked to the phone, be sure to delete that account from your settings before the reset. FRP, Unlocking the device without a check will be extremely difficult.
It’s also worth turning off Find Device in your Mi Account settings if you plan to transfer your phone to another person, which will save the new owner from unnecessary questions when activating. Check for system updates, although this is not always critical when completely reset, but the current firmware version may contain security patches that will be applied immediately after cleaning.
📊 Which is the main reason for your reset?
The smartphone started to slow down
Forgot the screen password.
Selling the device
Viruses and advertising
I just want a clean system.
Method 1: Reset via MIUI settings (Soft reset)
The safest and easiest method available to every Redmi Note 9 owner is to use the built-in operating system functionality, which is suitable when the smartphone is turned on, the screen responds to touch, and you can freely navigate the menu. To begin, open the Settings app and find the About Phone section, which is usually located at the bottom of the list or at the top of the main settings menu depending on the MIUI version.
Inside the About Phone section, you need to find the Reset option, and the system will offer two options: Reset all settings (return only the system settings to the factory settings, saving files) and Erase all data (full formatting), and we are interested in the second option, after selecting the system will show a warning that all data will be deleted, and ask for confirmation of action.
To confirm the operation, you will need to enter the screen unlock password or pattern lock, if it is installed, a security measure that prevents unauthorized persons from accidentally deleting data. Once the code is entered, the device will warn you of the time it will take the process, and after pressing the final button, automatic reboot and cleanup will begin.
It is important to note that during the reboot and cleanup process, the Xiaomi Redmi Note 9 can be turned on and off several times.The Mi or Android logo can be displayed on the screen. Don't try to interrupt this process, even if it seems to be hanging - modern systems have progress indicators that may not be displayed visually, but work goes in the background.
What to do if the reset is stuck on the logo?
If the cleaning process lasts more than 30-40 minutes and the screen does not change, there may be a failure in the file system. In this case, try to perform a forced reboot by holding the power button for 10-15 seconds. If this does not help, you will need to switch to the Hard Reset method via Recovery. Method 2: Hard Reset via Recovery Mode (If the phone does not turn on) If your Xiaomi Redmi Note 9 does not respond to touch, hung on the logo or you forgot the screen lock password, the only way out is using Recovery Mode. This mode is a minimal operating system that is sewn into the memory memory memory memory, which allows you to fully activate this button for the same operation. Hold them until the Mi logo appears on the screen, then the power button can be released, continuing to hold the volume button. In a few seconds, the main Recovery menu will open, where the control is carried out by the volume buttons (up/down), and the choice is confirmed by the power button. In the Recovery menu, select the English language (if not selected by default), then go to the Wipe Data item. Here you will find an important choice: Wipe All Data or Wipe Data (Keep SMS, Contacts and Photos). For the full formatting, which is discussed in this article, you need to select the first option for the power confirmation, you need to select the Wipe Confirm button. Action button combination Result Log in Recovery Volume + and Power Start the recovery menu Navigation in the menu Volume + / Volume - Moving the cursor up/down Confirmation of the choice of the Power button Execution of the selected command Exit from Reboot mode → After the reset confirmation, the cleaning process will begin, the progress of which will be displayed as a percentage. Upon completion, you will see the message "Data wiped successfully." Now you need to go back to the main menu and select Reboot, and then Reboot to System. The first inclusion after Hard Reset may last longer than usual. 5-7 It's a little bit like a little bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit of a bit FRP One of the most important features of modern Xiaomi smartphones, including the Redmi Note model 9, is a rigid binding of the device to the manufacturer's account. This is implemented through a security system that blocks the ability to use the phone after a reset unless the owner's credentials have been entered, a measure designed to protect users from theft, but can become a problem for honest owners who have forgotten their passwords. The Find Device function must be turned off before formatting if you want to avoid blocking activation. If the phone is already reset and requires a password that you do not remember, you can restore access only through the procedure of restoring an account on the official Mi website. No “sly” button combinations or third-party programs will not help to circumvent this protection legally. It is also worth mentioning the protection. FRP (Factory Reset Protection by Google: If a Google account is synced on a phone, the system will require you to enter a password from that account after resetting. This is an independent level of protection, and it works even if you delete your Mi Account. 🔒 FRP Blocks the device by requiring the last used Google account. ☁️ Mi Cloud allows you to remotely erase data and unlock the device through a web interface. 📱 Phone number binding is often used to restore access to Mi Account. 🛡️ Bypassing the protection without passwords is a violation of the terms of use and may be illegal. ⚠️ Warning: When buying a used Xiaomi Redmi Note 9, always request a full reset and initial activation. If the seller says that he will unlock himself, there is a high probability that the device was stolen or found. After the Xiaomi Redmi Note 9 has successfully formatted and turned on, you will see a welcome screen. At this stage, it is important to properly configure the device to avoid problems in the future. First of all, connect to a stable Wi-Fi network, as the system may require you to check the license or update security components. Often users notice that after a reset the phone is slower than immediately after purchase. This is normal for the first 30-60 minutes of operation. The MIUI system conducts background optimization of applications, indexes files and recovers data from the cloud. During this period, the processor can work in enhanced mode, and the battery - it will discharge faster than usual, if the backup time is installed, if the program is installed. It is recommended to manually install only the necessary applications from the Play Market, avoiding restoring the entire list of programs at once. Also check the date and time settings - an incorrect time zone can cause errors in the operation of security certificates and the Internet. 💡After the first turn on, let the phone lie on a charge with Wi-Fi connected for about an hour to background optimise the system and download security updates. In rare cases, a “cyclical restart” (bootloop) can occur when the phone is constantly turned off and on. If this happened after a successful reset, the firmware itself may have been damaged or the hardware component failed. In such a situation, it may be necessary to flash the device through the computer using the Mi Flash Tool utility, but this is already a more complex procedure that requires an unlocked bootloader. Frequently Asked Questions (FAQ) How long does the Redmi Note 9 formatting process take? Normally, the cleaning process itself takes 5 to 15 minutes depending on the amount of memory filled. However, the first on and initial setup of the system can take up to 20-30 minutes. Do not interrupt the process even if the screen goes out or changes the image. Will the Android or MIUI version be deleted when reset? No, the formatting only returns user data and settings to the factory state. The Android operating system version and the MIUI shell will remain the same as it was installed at the time of the reset. To update the software version, use the "Can update the Hard Reset photo after the system?" Recovering data after fully formatting internal memory is extremely difficult and almost impossible at home, especially given the encryption in modern Android. If you did not back up in advance, the chances of returning files are minimal. What if the phone asks for a password from a Mi Account that is not listed?This means that the account has been added to the system but does not appear in an obvious place, or the Find Device protection has been activated. Without it, the phone will remain locked. Is it safe to reset if the phone is custom firmware? If the Redmi Note 9 has an unofficial firmware installed (Custom). ROM), The reset procedure through Recovery may be different.The standard Recovery menu can be replaced by TWRP analogue. In this case, it is better to use the Wipe Data function within the custom system itself or follow the instructions of the specific firmware author.