Modern smartphones like the Xiaomi Mi 9T can accumulate software errors that affect system speed and stability over time. Often users notice that the device starts to run faster, applications open with a delay, and the interface hangs at the most inopportune moment, in such situations, the most effective solution is to return to the original state of the software.
The Full Reset procedure, or Hard Reset, removes all user data, returning the gadget to the "out of the box" state. This is not just deleting files, but deep cleaning of system partitions of debris and conflicts accumulated over the years of operation. Before starting the procedure, it is important to understand that restoring the previous state without a backup will be impossible.
In this article, we’ll take a closer look at all the options available to reset your settings on the Xiaomi Mi 9T. We’ll look at both the standard method through the settings menu and the more advanced option through Recovery Recovery mode, which is essential if the phone stops booting.
Preparation of the device for complete reset
Before initiating a data erasure process, a number of critical preparatory steps must be taken: ignoring these steps can lead to the loss of important information or locking the device after a reboot, and the main attention should be paid to the preservation of personal files and accounts.
First, back up all your important data, which can be contacts, photos, instant messengers, documents, and Xiaomi owners are most comfortable using the Mi Cloud cloud service or local saving to their computer via a local computer. USB-cable.
⚠️ Warning: Make sure the battery is at least 60% battery power. interruption of the reset process due to battery discharge can damage system files and inability to turn on the phone.
You also need to unplug your Google account and Mi Account if you plan to sell the device or transfer it to another user.Modern versions of the MIUI shell and Android have anti-theft protection, which will require you to enter your account password when you first activate after a reset.
Check if you have all the passwords you need. PIN-SIM card codes, Wi-Fi passwords and screen unlock graphics keys if not saved in the cloud.
☑️ Checklist before reset
Method 1: Resetting through system settings
The safest and easiest way to get back to factory settings is available directly from a working operating system, an option that is suitable for most users whose smartphones are functioning normally but require cleaning.
To start, open the main menu and find the Settings icon, and scroll down to About Phone in the options list, and that's where the basic system management and device information tools are located.
In the menu that opens, find Reset. The system will offer several options, but we are interested in Erase all data (reset to factory settings).
A warning will appear on the screen that all data will be deleted, the system may request the entry of a password to unlock the screen or PIN-code SIM-You need to check your identity card, and then you enter the code, click Reset and wait for the reboot.
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If the phone requests a password from a Mi Account when reset, it's standard protection procedure. Enter the data that was used when the smartphone was originally set up.
The process can take anywhere from 5 to 15 minutes depending on the amount of memory you have filled, and don’t try to interrupt or press control buttons until the language selection welcome window appears on the screen.
Method 2: Reset via Recovery Mode
If the Android operating system doesn't boot, freezes on the logo, or responds to commands with a long delay, a recovery mode is used, a technique called Hard Reset, and is executed using physical body buttons.
To enter recovery mode on the Xiaomi Mi 9T, you need to turn the device off completely. Then simultaneously press the volume button and the power button. Hold them until the Mi logo appears, then release the power button, continuing to hold the volume button.
When the Main Menu (often with the Android logo and the words "No command") appears on the screen, the navigation is done with volume buttons (up/down), and the choice is confirmed by the power button.
In the next menu, select the Wipe All Data option. The system will request confirmation of actions again. Move the allocation to Confirm and press the power button. The process of formatting memory partitions will begin.
What to do if the Recovery menu is in Chinese?
Once the cleanup is complete, the screen will read Data wiped successfully. Select Back to Main Menu, then Reboot → Reboot to System. The device will restart and the initial setup will begin.
Deletion of accounts and protection against blocking
One of the most common issues after a reset is Factory Reset Protection (FRP), an Android security mechanism that links the device to the last Google account entered.
To avoid a situation where the phone requires a password from an account you have forgotten, you need to follow the correct sequence of actions before resetting. Go to Settings → Accounts and sync.
Find your Google account, click on it, and select Delete your account. Similar procedure for Mi Account in the Mi Account settings section, only after deleting the accounts can you safely reset.
⚠️ Warning: If you reset your phone without deleting your accounts in advance and forget your passwords, unlocking your device will be extremely difficult.
The table below shows the main differences between normal data deletion and full formatting:
| Parameter | Deletion of account | Full reset (Wipe All) |
|---|---|---|
| Photo preservation | Yeah (in the cloud) | No (backup required) |
| Preservation of applications | Yes. | No. |
| System settings | No change. | Back to factory |
| FRP lockdown | Takes off. | Maybe it might come up. |
Solving problems after discharge
After the procedure is successfully completed and the first boot is downloaded, users may encounter a number of nuances: the system will run faster, but some features may require reconfiguration.
Check the touch screen and multi-touch first. Sometimes calibration is required after upgrading or resetting, although this is rare on the Xiaomi Mi 9T. If there are problems with response, try restarting the device again.
The second important step is to restore the network, make sure that mobile data is turned on and the Internet is working, and without a connection to the network, it will be impossible to check the Google Play license and activate some applications.
If the phone gets hot or discharges quickly in the first hours after reset, don't panic. The operating system performs background file indexing and service setups. Let the device lie on charge for about an hour with Wi-Fi connected.
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The first 24 hours after resetting, the system optimizes the operation of applications, so a temporary decrease in autonomy is normal.
If the device is hit by a cyclic bootloop after trying to reset through the menu, the only solution is to repeat the procedure through the Recovery Mode described above.
Features of reset for different versions of MIUI
The interface and location of the items may vary slightly depending on the version of the installed shell MIUI. At the time of writing, the current versions of MIUI 12, 13 and 14, based on Android 10, 11 and 12, respectively.
In newer versions of MIUI 13/14 security. When trying to reset through settings, the system may strongly recommend backing up to Mi Cloud and warning you that it is not possible to recover data without a password.
Older versions of firmware may be faster, but the recovery functionality is less flexible. It is recommended to check for system updates before reset, as the new version of the software may contain bug fixes that make reset unnecessary.
Also worth noting is the difference between global (Global) and Chinese (CN) firmware versions: In Chinese versions, Recovery menus can be entirely or partially in Chinese, which requires special care when selecting menu items.