Modern smartphones like the Xiaomi Redmi 9C offer a variety of features to protect personal data, and one of the most popular is biometric fingerprint unlock. However, there are situations when the user needs to temporarily or completely abandon this feature, this can be due to the desire to use only a pattern lock, sensor sensitivity problems or simply having to transfer the device to another person without access to your biometric data.
The process of disabling the scanner in the MIUI shell is quite simple, but it requires care not to get confused in the menu of security settings. In this article, we will discuss all the steps of removing fingerprints, as well as alternative ways to protect your gadget. It is important to understand that after removing the biometrics, login will only be possible through a digital code or graphical drawing.
We will also address data security questions when you turn off the feature and answer frequently asked questions from Xiaomi budget model owners: Fingerprint removal does not erase other phone data, such as photos or contacts, but resets biometric authorization settings for all applications. Let's get into a detailed review of the procedure.
Why you might need to shut down biometrics
Users often wonder why it is worth removing a handy feature like a fingerprint scanner. In fact, there may be several reasons, and they are not always related to a device failure, sometimes it is a matter of personal preference or specific security requirements in certain situations.
For example, if you plan to sell your Redmi 9C or give it to relatives, it is crucial to delete all of your biometrics. Even if you complete a full reset, pre-deleting fingerprints adds an additional layer of confidence that your biometrics will not be stored in the device's memory.
- 🔒 Improved security when transferring the device: eliminates the possibility of unlocking your finger by unauthorized persons.
- 🔋 Battery savings: Although the sensor consumes minimal power, shutting it down completely reduces background system activity.
- 🛠 Solving technical problems: Helps to eliminate errors when the scanner is not working correctly or spontaneously unlocks the phone.
- 🧹 Re-prioritization: Users prefer to use more complex passwords instead of biometrics.
In addition, some users note that on budget models, the scanner can respond to wet or dirty fingers with a delay, in which case switching to a pattern lock can be a faster and more reliable solution for everyday use.
⚠️ Note: Before you completely abandon biometrics, make sure you remember your backup password or PIN-Without them, you can lose access to the device if you forget the pattern lock.
Preparing for changes in security settings
Before making changes to your Xiaomi security, you need to do a few preparatory steps to avoid unforeseen locks and that you do not lose access to important smartphone features.
First of all, remember or record your current lock screen. Android requires proof of identity before deleting the biometrics. If you don't remember the code, you can't do it without completely resetting the device.
☑️ Preparation for scanner shutdown
It’s also worth checking which apps use fingerprints to log in, and bank clients, messengers like Telegram or WhatsApp, and photo storage may require reconfiguration after disabling biometrics.
It is recommended to back up important data in advance, although the fingerprint deletion procedure itself does not affect user files, a standard digital hygiene practice that should be followed before any manipulation of system settings.
Step-by-step: Removing fingerprint
The process of turning off the scanner on the Redmi 9C takes no more than a minute, if you know exactly where the switches are located. MIUI interface may vary slightly depending on the firmware version, but the logic of actions remains the same for all devices of the brand.
To start, unlock your smartphone and find the Settings icon on your desktop, which is usually a gear-like icon located at the top of the screen or in the folder with system utilities, and click on it to open the main settings menu.
In the list that opens, look for the Passwords and Security section, which in some versions of the shell may be called simply Security, or it may be inside the Additional menu, and this is where all the security tools for your device are concentrated.
Settings → Passwords and Security → Privacy → Delete fingerprint dataThen go to Privacy or select Fingerprints immediately. The system will ask you to confirm the action by entering the current lock password. Once you have successfully logged in, you will see a list of saved fingerprints.
Click on the name of the fingerprint you want to remove (e.g., "Prime 1") and select the option "Delete." Confirm the action in the pop-up window. If there are more than one, repeat the procedure for each.
What to do if the removal button is inactive?
Configuring alternative protection methods
Once you have disabled the biometrics, your Redmi 9C will become less secure if you don’t configure an alternative login method, prompting you to choose a new locking method immediately after the last fingerprint is removed.
You can choose a pattern lock that requires your finger to follow a specific trajectory on the screen, which is a handy option if you like muscle memory. Alternatively, you can use it. PIN-a code or complex password consisting of letters and numbers, which is considered the most reliable option.
| Protection method | Level of security | Usability | Recommendation | Difficulty in selection |
|---|---|---|---|---|
| pattern lock | Medium. | High. | For everyday use | Screenprints. |
| PIN-code (4-6 figure) | Medium. | Average. | For quick unlocking | Low (10,000 combinations) |
| Alphabetical digital password | High-pitched | Low. | For maximum data protection | Very high. |
| Facial recognition (2D) | Low. | Very high. | Only for basic protection. | You can fool the photo. |
To activate a new method, go to the Passwords and Security menu and select Screen Lock. The system will prompt you to create a new key. Come up with a combination that is difficult to guess but easy to remember.
Don’t forget to set up a smart lock if it’s available in your version of the software, which lets you leave your phone unlocked when it’s in a safe place, such as your home or connected to a trusted Bluetooth device.
Solving Typical Problems and Errors
Sometimes users are faced with situations where the scanner behaves unpredictable even after trying to adjust or delete it. On the Redmi 9C model, there may be specific bugs associated with system optimization.
If after removing the fingerprint, the phone continues to require biometrics or the scanner lights up on its own, try rebooting the device.
- 🔄 Reset sensor settings: Go to the settings, add a new fingerprint, and then delete it again.
- 🧹 Cleaning up security data: In the application menu, find "Security", go to the storage and click "Clear data".
- 📱 Check Updates: Make sure your Xiaomi has the latest version installed MIUI, Because updates often contain scanner error corrections.
⚠️ Note: If the fingerprint scanner is on Redmi 9C It's not working physically (it doesn't light up or vibrate), it could be hardware, and then software won't work, and you'll need a diagnosis at a service center.
It’s also worth checking if Safe Mode Unlock is enabled, and if the phone is in this mode, some security features may work limited or require a constant password input.
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Rub the back cover of your smartphone with a soft cloth before setting up the scanner. Fat marks and dust significantly reduce the read accuracy on budget models.
Impact on the work of applications and banking services
Disabling biometrics directly affects how you interact with secure applications.Banking programs like Sberbank Online, Tinkoff or PayPass often use a fingerprint to quickly log in and confirm transactions.
After removing the fingerprint from the system, these applications will automatically switch to entering the password or PIN-You don't have to reconfigure the login in every application, the system will redirect you to enter the device's primary password.
However, in some cases, it may be necessary to re-authorize within the app itself, for example, Google Pay (or its analogues) may require you to re-confirm your identity through a Google account to make sure that the change in protection method was initiated by the owner.
For corporate users who use MDM-Profiles or work accounts, disabling biometrics may lead to temporary blocking of access to work chats or mail before entering the administrator credentials.
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Turning off the scanner in the phone settings automatically updates security policies across all related applications, requiring the use of a primary password.