Owning a Xiaomi Redmi 9 smartphone often involves the accumulation of a huge amount of personal information, from family photos to banking applications. Sooner or later, the user is faced with the need to completely clean the device, whether it is selling the gadget, transferring it to a relative or trying to correct critical errors in the system, a process that requires care, because irreversible deletion of files is an operation that cannot be canceled by standard recovery methods.
Many Android device owners fear the complications of a Google account and Factory Reset Protection (FRP) lock that can turn a phone into a brick for a new owner if you don’t follow the right sequence of steps. In this article, we’ll take a closer look at the steps of preparing Redmi 9 for a full reset, the built-in MIUI tools and alternative methods available through the recovery menu. The right approach ensures that your data doesn’t fall into the wrong hands and the device is ready for a new life.
Preparation of the device for complete reset
Before embarking on radical memory cleanup measures, a number of preparatory steps must be taken that are often ignored by users in a hurry. The most important step is to back up all significant files, since once the reset procedure is started, it will be impossible to restore them without a pre-created backup. Check cloud storage or connect your smartphone to your computer to manually copy folders with photos and documents.
Special attention should be paid to tied accounts, because Android security is closely integrated with Google services. If you just click the reset button without deleting the account first, the phone will require you to enter a password from the last synced account the next time you turn on, which is a protection mechanism against theft, which can be a serious problem if you forget the login details or transfer the device to another person.
- 📸 Backup your contacts and calendar through Google Sync settings.
- 🔒 Write down or remember passwords from all important accounts, including Mi Account and Google.
- 📱 Extract. SIM-microSD card and memory card if installed in the device slot.
- 🔋 Charge the battery of the Redmi smartphone 9 minimum 50-60% to prevent disconnection during the process.
☑️ Checklist before reset
It’s also worth checking for two-factor authorization on important services so that you don’t lose access to your social media or messenger profiles after resetting and resetting, and make sure you have access to the phone number that the SMS confirmation codes come to or save the recovery backup codes.
⚠️ Note: If you are selling a phone, take it out. SIM-A card and a memory card before transferring a device, which can store contacts and files that you didn't copy to the cloud.
Delete Google and Mi Account
A critical step is to untie accounts, without which the reset protection (FRP) function will not allow a new user to activate a smartphone. To delete a Google account, you need to go to the system settings and find the section responsible for accounts and synchronization. In the MIUI interface, this path may differ slightly depending on the firmware version, but the logic remains the same for all Xiaomi devices.
When you are in the account menu, select the Google profile that appears in the active list. Click on the delete or exit button, and then the system will request confirmation of the action. A similar procedure should be performed for the Mi Account account, which is part of the manufacturer's ecosystem and can also lock the device when reset without prior detachment.
What is FRP and why is it important?
After successful deletion of all accounts, the list in the relevant settings section should be empty or only contain non-authenticated system services, ensuring that the next time you turn on, the phone will be perceived as a new, clean device, not associated with the previous owner.
Reset via MIUI system settings
The easiest and safest way to delete all data from Xiaomi Redmi 9 is to use the built-in settings menu, which is preferred by most users as it is intuitive and minimizes the risk of errors. First, open the Settings app and scroll down to About Phone, where the basic device information is located.
Inside the About Phone section, you need to find the "Settings Reset" or "Factory Reset" option, and the system will offer two options: "Reset all settings" (which will only return the system parameters to the original ones, saving files) and "Erase all data." We are interested in the second option, which completely cleans the internal memory of the smartphone.
| Parameter | Description of action | Impact on data |
|---|---|---|
| Resetting settings | Return of system parameters to factory | Files stay in place |
| Erase all data | Complete cleaning of internal memory | All files and accounts are deleted |
| Safe discharge | Cleanup with data rewriting | Impossible to recover files |
When you select the deletion option, the system may suggest that you enable the Safe Reset or Clear All Files function. Activating this option causes random data to overwrite free memory, making it almost impossible to restore files with special programs. This is especially important if you sell the phone or transfer it to unauthorized people. The process can take from 10 to 30 minutes depending on the amount of memory filled.
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If you are planning to sell your phone, make sure to check the Safe Reset box, which will take longer, but ensures that your personal photos and documents cannot be restored even with special software.
After confirmation of action, the phone will request the input of a pattern lock, PIN-This is the final barrier to protect against accidental or malicious reset, and once you enter the code, the deletion process will begin, and the device will reboot.
Using Recovery Mode for Cleaning
If access to the settings menu is not possible due to a forgotten unlock password or system errors, the only option is to use Recovery Mode. This is a special diagnostic mode built into the device memory that allows you to perform low-level operations, including a full reset (Wipe Data).
To enter, you need to turn off the smartphone completely, then press the volume button and the power button simultaneously. Hold them until the Mi logo appears, after which the power button can be released, continuing to hold the volume button until the Recovery menu appears. Navigation in this menu is carried out by volume buttons (up/down), and the choice is confirmed by the power button.
- 🔽 Select the language (usually English or Chinese if not Russian) with volume buttons.
- 🗑️ Find the "Wipe Data" item and confirm the choice of the power button.
- ✅ Select “Wipe All Data” for full cleanup or “Reset Settings” for resetting settings.
- 🔄 After completion, select Reboot to restart the system.
⚠️ Note: Recovery does not automatically delete a Google account if the phone was turned on before.When you first download, the system will still request a password from an account that was previously synced (FRP lock).
This method is more “rough” and does not always offer the option of secure overwriting data, so files can theoretically be restored by specialists. However, to solve problems with booting the system or resetting a forgotten screen password, this is the only right solution.
Nuances of data deletion for sale
Transferring your device to a new owner requires special privacy care. In addition to a technical reset, it is important to make sure that there are no traces of your activity on the device, check the gallery for photos deleted but not cleared from the cart, as well as browser history and saved passwords in the Google password manager.
It is recommended that after the reset, you don’t set the phone up completely, but stop at the language selection stage, which will show the customer that the device is really clean and ready for initial activation. If you turn on the phone and go through the initial setup, traces of your Wi-Fi network or new account may remain in the history of the device, which will create confusion.
Also worth paying attention to the physical condition of the device: wipe the screen and body to make the phone look neat. the cleanliness of the device is not only pleasant to the new owner, but also indicates the careful attitude of the previous user, which can positively affect the sale price or assessment of condition.
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The main principle of selling used equipment: your phone should meet a new owner in a “just out of the box” state, without unnecessary questions and requests for passwords.