Redmi series mobile devices have proven to be reliable assistants in everyday tasks, but over time, even the most stable system can fail. Xiaomi Redmi 9T users often face situations where accumulated software debris, erroneous updates or application conflicts lead to a slowdown in the interface.
The procedure for cleaning memory and system files requires careful attention, as it completely deletes user data. Hard Reset is a radical measure that erases all photos, contacts, messages and installed applications. Before starting any manipulation, it is critical to back up information so that important documents or personal archives are not lost forever.
In this article, we will take a look at all the available ways to return the Xiaomi Redmi 9T to factory settings. We will look at standard methods through the settings menu, using the Recovery engineering mode, as well as remote reset via Google account. Understanding the nuances of each method will allow you to choose the most suitable option for your particular situation.
Preparation of the device for the discharge procedure
Before you start active action, you need to make sure that the device is ready to overwrite the system partition. the battery of the smartphone should be charged at least 50-60%, as the formatting process can take from 5 to 15 minutes, and a sudden power outage at this point can damage the bootloader. If the charge is low, the system may simply prevent the reset procedure from starting, giving the appropriate warning.
Be sure to sync your important data with your Mi Cloud or Google Drive cloud storage. Recovery Mode resets the lock screen, but the data remains encrypted until you enter your Google account password after you turn it on. This means that without knowing your account passwords, you won’t be able to use your phone even after you’ve cleaned it completely.
It is also worth removing the microSD card if it is installed in the slot. Although modern versions of MIUI usually ask for confirmation to erase the external card, physical removal of the media guarantees 100% safety of your files on the flash memory.
⚠️ Attention: Extraction SIM-The card before reset is not mandatory, but it is recommended if you are afraid of accidentally losing the settings of the mobile operator or contacts stored on the SIM card, not in the phone memory.
Make sure you remember your Google account password and your Mi Account. Once reset, FRP (Factory Reset Protection) protection will be activated, requiring you to log in under the same account as before the cleanup, and without that data, the phone will become a brick with limited functionality.
☑️ Redmi Preparation 9T dump
Resetting settings through the smartphone menu
The safest and easiest way to get the Xiaomi Redmi 9T back to its original state is to use the built-in system menu. This method is suitable for cases when the device is turned on, the screen responds to touch, and you have access to the desktop or settings menu. The MIUI shell algorithm is linear enough and understandable even to an inexperienced user.
To start, open the Settings app and scroll down to the bottom. You're interested in the About phone section, which contains basic technical information. In the menu that opens, find the Reset option, which is usually located at the bottom of the list or in the submenu, depending on the version of the installed MIUI firmware.
The system will offer two options: Reset (saving files) and Erase all data. To completely clean up, choose the second option. You will need to enter a pattern lock or digital pin unlock the screen to confirm the operation, after which the final warning will appear that all data will be deleted.
- 📱 Press Settings. → The phone.
- 🗑️ Select Settings Reset. → Erase all data.
- 🔐 Enter the screen unlock password.
- ✅ Confirm the action with the OK button or.
Once confirmed, the device will reboot, and the MI logo or Android with a progress indicator may appear on the screen.Do not touch the phone at this point.The process takes a few minutes, and the interruption can lead to file system errors. Upon completion, the smartphone will turn on as new, requiring initial language and Wi-Fi settings.
💡
If you have two-factor authentication enabled on your Google account, make sure you have access to your phone number or backup codes, as after a reset, the system may request a sign-in confirmation.
Using Recovery Mode for Resetting
If the operating system doesn't boot, the screen is locked by a forgotten pattern lock, or the sensor has stopped responding, Recovery mode comes to the rescue. It's a low-level menu built into the device's memory that allows you to control the system bypassing the main Android interface. Entering this mode on Redmi 9T It is performed by a combination of physical buttons.
Turn off your smartphone completely. Then simultaneously press the Volume Up and Power button. Hold them until the Mi logo appears, and then the power button can be released, while still holding the volume. In a few seconds, the main Recovery menu will open.
Navigation in this menu is done with volume buttons (up/down), and the choice of item is confirmed by the power button. You need to find the Wipe Data item and select it. Then the system can offer several options, among which we are interested in Wipe All Data. Confirm the choice by selecting Confirm.
What to do if the Recovery menu is in Chinese?
Once the cleaning process is complete, you will see the message "Data wiped successfully." Select the option Back to Main Menu, then Reboot → Reboot to System. The first run after such a reset can last longer than usual, sometimes up to 10 minutes, as the primary initialization of memory partitions occurs.
⚠️ Warning: Recovery Resets Don't Require Screen Unlocking, But Google Protection FRP You will need a password from the Google account that was synced to the device before the reset.
Remote reset via Google services
In situations where the phone is lost, stolen, or simply out of reach but connected to the Internet, Google’s Find My Device service allows you to not only track the location of the gadget, but also initiate a command to completely clean the data remotely.
To do this, go from any other device (computer, tablet or phone friend) to google.com/android/find. Log in to the Google account that was used on Redmi 9T. If the device is online and geolocated, you will see it on the map.
In the side menu or at the bottom of the screen, select the option to Clean the device. The system will warn you of the consequences. Once confirmed, the command will be sent to the phone. Once Redmi 9T receives the signal and connects to the network, it will automatically start the process of erasing data and restart.
- 🌐 Go to the site. android.com/find.
- 🔑 Sign in to the right Google account.
- 📍 Select the Redmi device 9T list.
- 🧹 Press the command Clean the device.
It's important to understand that once you clean it, the phone will be locked before you enter a password from that same Google account, which is a security mechanism that prevents unauthorized users from using the stolen device, and without the passwords of the owner, the phone will remain a useless piece of plastic and glass.
Common mistakes and ways to solve them
Despite the simplicity of the procedure, users can encounter various technical problems, one of the most common mistakes is cyclical restart (bootloop), when the phone constantly reboots without reaching the desktop, which can happen if the system files were damaged before the reset or if the cleaning process is interrupted.
Another common problem is the system's failure to accept the Google account password after a reset (FRP lock), which happens if you changed your password recently and your phone didn't sync, or if you try to log in from another account, in which case the security system blocks access, believing the device is stolen.
If the touch screen is not working properly after reset or if there are artifacts of the image, this may indicate hardware problems that have manifested themselves after loading on the controller. SIM-A card or damaged memory card that is worth retrieving and checking.
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone is stuck on the logo. | Firmware error or interrupted reset | Power + Vol Up for 15 seconds |
| Requires an old account | FRP (Google Lock) Protection | Enter account details before reset |
| Passwords are not reset. | Attempting to circumvent the defence | Restoring Access Through Google |
| Black screen after reset | Battery discharge or display failure | Put it on 30 minutes charge. |
In some cases, especially on custom firmware or after a failed root-right experiment, a standard reset may not help, so the only way out is 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.
⚠️ Warning: If the phone has gone into Fastboot mode, don't be alarmed. 10-15 seconds until the device vibrates and restarts in normal mode.
Xiaomi Redmi 9T setup after reset
After the procedure is completed, you will be presented with a welcome screen similar to the one you had when you first turned on your new phone, which will prompt you to select a language, connect to a Wi-Fi network and check for updates, and agree to an update, as new security patches often fix vulnerabilities discovered after the device is released.
Then you sign in to a Google account, and you can then ask the system to restore data from a backup, and if you created a backup before reset, select Restore from the Cloud or Restore from an Android device, which will return your contacts, your call history, your list of installed apps, and even your desktop icons.
The MIUI shell will also offer to log into the Mi Account, which is desirable for full-fledged services such as Mi Cloud, Mi Pay (where available) and themes. Once the basic settings are set, the system will start the background download of applications and indexing files, which can temporarily increase battery consumption and heating of the case.
💡
Full synchronization of all data and setting up background processes can take anywhere from 30 minutes to several hours depending on the amount of information being recovered and the speed of the Internet.
To conclude, check the basic modules: the camera, speakers, microphone and fingerprint sensor. Make sure all drivers are up correctly. If you notice that the battery is discharged faster than usual in the first day, it is normal - the system is optimizing the energy use for installed applications.