Smartphone Xiaomi Mi 9T, also known as the Redmi K20 In the Chinese market, it remains a popular device due to its frameless AMOLED-But over time, even the most powerful gadget can start to slow down, glitch or require cleaning before selling. In such situations, the only correct solution is a complete return to factory parameters, which eliminates software errors and cleanses memory.
The procedure for resetting data on Xiaomi Mi 9T can be done in two main ways: through the standard operating system settings menu or through the Recovery Mode if the phone is not turned on or locked. Regardless of the method chosen, it is critical to understand that all user data, including photos, contacts and applications, will be irretrievably deleted.
In this article, we will take a detailed look at each step of the procedure, look at the nuances of working with the MIUI shell and answer frequently asked questions: you will learn how to prepare the device correctly, what button combinations to use and what to do if the process went wrong.
Preparation of the device for complete reset
Before taking drastic measures, a number of preparatory steps must be taken, and ignoring these steps can result in the loss of sensitive data or the device being locked by a Google or Mi Account account, and make sure you understand the consequences of your actions and have access to the necessary passwords.
The first and most important step is to back up your contacts and notes, so you can use the built-in MIUI tools to save data to the cloud or to an external drive, and sync your contacts and notes with your Google account so that they automatically recover from a reset.
- 🔋 Charge the smartphone battery to at least 60-70%, so that the device does not turn off at a critical moment.
- ☁️ Check if you have a Google and Mi Account and remember your passwords, as after a reset, the system will require them to confirm the owner’s rights.
- 💾 Copy photos, videos and documents to your computer or cloud storage, as your internal memory will be completely cleared.
It's worth taking out. SIM-While modern versions of Android typically do not affect external drives in a standard reset, physical retrieval of the memory card ensures that the data on it is safe and prevents accidental formatting.
Method 1: Reset via the settings menu (standard method)
The safest and easiest way to get the Xiaomi Mi 9T back to factory status is to use a built-in menu, which is suitable for when the phone is turned on, the screen responds to touch, and you know the unlock password, and it allows you to clean up as cleanly and correctly as possible.
To start, open the Settings app and scroll down to the bottom. You're interested in the About Phone section. This is where the basic system information and the reset button are located. Click on it to go to the additional options.
In the menu that opens, select Reset and then click the Delete All Data button (or Reset). The system may request confirmation and input several times. PIN-It's a code or a pattern lock that unlocks the screen.
☑️ Pre-reset check
Once confirmed, the phone will restart and the deletion process will begin. The MI or Android logo with a progress indicator may be displayed on the screen. Attention: this process can take from 5 to 15 minutes depending on the amount of memory filled. Do not try to interrupt it.
⚠️ Warning: If the phone has Find My Device enabled, after the reset, the system will require you to enter a password from a Google account that was previously synced.
Method 2: Hard Reset with Recovery Mode
If the smartphone is not turned on, stuck on the logo or you forgot the pattern lock, you will need to use Recovery mode. On the Xiaomi Mi 9T, this mode is entered by a combination of physical buttons, which allows you to bypass the blocked interface.
Turn off the smartphone completely. Then simultaneously press the volume button and the power button. Hold them until the Mi logo appears, after which the power button can be released, continuing to hold the volume until the Recovery menu appears.
In the Recovery menu, the volume buttons (up/down) control the menu, and the power button confirms the choice. You need to find the Wipe Data item and select it. Next, the system will prompt you to select Wipe All Data for complete removal.
What to do if you recover in Chinese?
Once you have confirmed, you will start formatting the memory partitions. When you have finished the process, the message "Data wiped successfully" will appear on the screen. Select Back to Main Menu, and then Reboot -> Reboot to System to start the system.
Resetting forgotten password and locks
A common cause of reset is loss of access to the device.However, if the Xiaomi Mi 9T had internet and sync enabled, resetting via Recovery will not remove Google account protection (FRP).
If you forget the lock screen password but remember the Mi Account, you can try unlocking the device remotely via i.mi.com from another device, and if that’s not possible, only a full reset described above, followed by entering the Google password, will help.
In cases where the phone requires you to enter a previously used Google account and you do not remember it, the situation is complicated: officially restore access only through the procedure of restoring a Google account. Third-party methods of bypassing FRP often depend on the Android version and security patch.
It is important to understand that Hard Reset is not a panacea for all locks; it deletes user data, but does not remove theft protection if the device was registered with the relevant services before the reset.
Table: Comparison of discharge methods
For the convenience of choosing the right method, consider the main differences between a standard reset via the menu and a hard reset via Recovery.
| Parameter | Through Settings. | Through Recovery. |
|---|---|---|
| Access to the system | Required. | Not required |
| Difficulty | Low. | Medium |
| Risk of error | Minimum | Medium (human factor) |
| Use of the | Planned cleaning, sale | Hanging, forgotten password. |
As you can see from the table, if you have access to a desktop, you'd better use a software method, which is more visible and controlled, and Recovery mode is a last resort tool for resuscitating non-working systems.
Initial adjustment after reset
After the successful completion of the procedure, the Xiaomi Mi 9T will restart and welcome you to the language selection screen. From this point on, the initial setup phase begins, which is similar to using a new smartphone out of the box.
You'll need to select a language, connect to your Wi-Fi network, and log in to your Google account. If you're planning to restore data from a backup, the system will suggest you do so at that point, select the restore point you want, and wait for the apps to load.
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When you first set up, turn off automatic app updates in Google Play until you have completed installing all the basic software, which will speed up the initial setup and save traffic.
Be sure to check the MIUI version and the availability of security updates. Go to Settings -> About Phone and click on the MIUI version. Topical patches can fix vulnerabilities that existed in the old version of the system before the reset.
⚠️ Note: Do not miss Google security check steps. If the system requests a password from an account that was previously used on this device, it is mandatory to enter it to continue working.
Possible problems and solutions
Despite the simplicity of the procedure, users of Xiaomi Mi 9T can face a number of typical problems, most often associated with a process freeze or a cyclic restloop.
If the phone is stuck on the Mi logo after reset, try resetting, but this time in the Recovery menu, select Wipe Cache (if available) or Wipe All Data again. Sometimes it takes several cleaning cycles to work properly.
In rare cases, the problem may lie in the corruption of the system firmware files. If standard methods do not help, you may need to flash the device through the computer using the Mi Flash Tool utility and the official firmware for your model.
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Cyclical reboot after reset most often indicates damage to the system partition or a conflict of hardware components requiring firmware reflashing.
And you also have to consider that after reset, the battery can run out faster in the first hours of use, which is normal, because the system indexes files and sets up services in the background. 1-2 stabilizing.
Frequently Asked Questions (FAQ)
This section provides answers to the most popular questions that Xiaomi Mi 9T owners have when trying to reset their settings. If you didn’t find the answer here, maybe your situation requires a personalized approach.