How to bypass a fingerprint on Xiaomi: professional methods

The situation where a Xiaomi or Redmi smartphone stops recognizing the owner is one of the most stressful for the user.The device turns into a “brick” with access to calls, but without the ability to log in. Biometric protection based on Android, especially in the shell of MIUI and HyperOS, is designed to make unauthorized access as difficult as possible, making standard bypassing difficult.

There are several scenarios: you forget the pattern lock you needed after the reboot, or the scanner stopped responding because of a hardware failure. Most of the time, it's not about hacking someone else's phone, but about restoring access to your own gadget. It's important to understand that modern security methods do not allow you to simply delete biometric data without completely clearing your memory if you do not have access to your account.

In this article, we will look at the technical aspects of Xiaomi’s security and the real ways to restore access. We will not use “magic buttons”, but we will look at the proven methods of working with Fastboot, resetting via Recovery and using debugging over USB.

Principles of biometrics in MIUI and HyperOS

To understand how to circumvent security, you need to understand how it works inside. In Xiaomi smartphones, fingerprint data is stored in an isolated part of memory, often called TEE (Trusted Execution Environment), which means that the Android operating system does not have direct access to this data in plain form. It is encrypted and tied to a unique device identifier.

When you try to unlock your phone, the hash of the fingerprint is compared to the reference in the protected area. If there is no match or it has been a long time since the last password unlock, the system requires you to enter the PIN-It's a security mechanism that you can't get around by simply restarting the services of a system without superuser rights.

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Biometric data on Xiaomi is stored in encrypted form and cannot be read or copied by third-party applications without root rights.

MIUI and HyperOS shells add an additional layer of protection through the Mi Account. Even if you manage to reset the lock screen, the first time you boot, the system can request a password from the account to which the phone was linked, an anti-theft measure known as Activation Lock.

Mi Account Reset: Legal Method

The easiest and safest way to access a device if you forget your password or the fingerprint doesn’t work is to use Xiaomi’s cloud service, which only works if the locked phone has the internet turned on and is logged in to Mi Cloud.

You will need a computer or other smartphone. Go to the official Xiaomi cloud service website and log in under the same account as on the locked device. From the device management menu, select your phone. If the device is online, you will have access to the Find Device feature, which includes lock and clean options.

• 🔒 Select the “Device Lock” option to set a new temporary password that will replace the old one.
• 🗑️ Use the “Clear Data” function if access to information inside is not important, but you just need to log in.
• 📱 Make sure your phone is connected to Wi-Fi or mobile network to receive commands from the server.

Once the server commands, the phone will receive a signal to reset or change the password, which will take between seconds and a couple of minutes depending on the quality of the connection, and this is the only method that avoids data loss in some scenarios if synchronization is enabled.

Using Recovery Mode for Full Reset

If cloud-based methods are not available, the classic way is to go through Hard Reset, which is through recovery mode, and it's guaranteed to remove the lock and prints, but completely remove all user data: photos, contacts, apps. SIM-card and memory card, if any.

To enter Recovery mode on most Xiaomi and Redmi models, you need to turn off the phone. Then press the button combination: usually it's Volume Up and Power. Hold them until the Mi logo appears, then release the power button, continuing to keep the volume up until the menu appears.

In the Recovery menu, you can control the volume buttons (up/down) and the power button (select). You need to find Wipe Data or Clear Data. After you choose, confirm the action by selecting Wipe All Data. The system will warn you about deletion, agree.

The cleaning process takes a few minutes. Once it's done, the phone automatically reboots. The first boot after the reset will be longer than usual. Importantly, if the phone has been searched for the device, after booting, the system will require you to enter the Mi Account password that was before the reset. Without this password, you will not be able to use the phone.

⚠️ Warning: If you bought a phone with your hands and it's locked by someone else's account, it's almost impossible to legally unlock it without the previous owner's data.

Unlocking via Fastboot and PC

Fastboot mode is designed for low-level interaction with the device, often used for flashing. For the average user, this method can be useful if the standard Recovery reset doesn't work or is locked. You'll need a USB cable and a computer with Xiaomi and ADB/Fastboot drivers installed.

To log in to Fastboot, turn off your phone and press the Volume Down and Diet buttons simultaneously, and the screen will show a picture of a hare repairing an android, or the words FASTBOOT. Connect the phone to your computer.

Open the command line on your PC in the folder with ADB tools. Enter a command to check the connection:

fastboot devices

If the device is identified, you will see a serial number. You can use the userdata cleaning command to reset (partitions), but on modern versions of the Locked Bootloader MIUI, this command may not work or be prohibited by security policy.

fastboot erase userdata

Xiaomi is actively fighting to unlock the bootloader, so for new models, this method is becoming less effective without prior preparation.

Comparison of Access Restoration Methods

The choice of method depends on your specific situation: whether there is access to the Internet, whether data retention is important and what model of phone you have in your hands. Below is a table that will help you navigate the effectiveness of various methods.

As you can see from the table, Recovery Mode remains the most versatile method, requiring no additional hardware other than the phone itself. However, it guarantees loss of information. Methods using PCs are good because they allow you to control the process and see system logs if something goes wrong.

For users who often forget passwords, it is recommended to set up a smart lock in advance in the security settings, which will allow the phone to remain unlocked in trusted places or in the presence of wearable devices such as the Mi Band.

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No method allows you to save data with a forgotten screen password without a pre-created backup in the cloud.

Problems with hardware fingerprint scanner

Sometimes the problem isn't with a forgotten password, but with a physical malfunction of the scanner. On Redmi Note and Poco models with side or underscreen scanners, you often find a situation where the finger is not read, even though everything used to work perfectly, and this can be due to software driver failure or contamination.

Try to clean the scanner area with an alcohol wipe. If that doesn't help, check if the security glass is too thick or biased. In some cases, rebooting to Safe Mode helps, which disables third-party applications that may conflict with the sensor driver.

To enter safe mode:

• 🔄 Press and hold the off button on the screen.
• 👆 When the “Switch Off” icon appears, press and hold your finger on it for a few seconds.
• ✅ The phone will suggest to go to safe mode - confirm.

If the print is running in safe mode, it means that some application installed is causing the problem. Delete the recently installed programs. If the scanner does not work even there, there is a possibility of hardware failure of the plume or the module itself, which requires contacting the service center.

⚠️ Warning: Frequent attempts to enter an incorrect fingerprint or password can temporarily block the ability to enter for 30 seconds, 1 minute or even 12 hours.

Frequently Asked Questions (FAQ)