How to set a password for applications on Redmi Note 9

Mobile devices have long ceased to be just a means of communication, turning into digital safes that store our financial history, correspondence and personal photographs. Users of the model Redmi Note 9 often wonder about privacy protection, especially considering that the phone can fall into the wrong hands at the most inopportune moment. A standard screen lock protects the device from accidental access, but does not save you if the phone is already unlocked and you walk away for a minute.

The shell MIUIinstalled on smartphones Xiaomioffers a built-in and powerful tool for encrypting access to individual apps. This function works at the system level, without requiring the installation of third-party software, which often overloads RAM or contains advertising. Proper configuration of this mechanism turns your gadget into an impregnable fortress for prying eyes.

In this material we will analyze in detail the process of activating protection, consider the nuances of working with different firmware versions and answer questions that arise from owners Redmi. You will learn how to set up biometric unlocking for quick access and what to do if you forget the created security code.

Preparing the system and updating the interface

Before you start setting up access restrictions, you need to make sure that your smartphone's operating system is working correctly. The company Xiaomi regularly releases security updates that may affect the operation of built-in security modules. Go to the menu Settings and select About phoneto check for new versions MIUI.

Sometimes the application blocking function is hidden or moved in updated versions of the interface. If you can't find the partition you're looking for, try clearing the Security app's cache. To do this, hold the application icon on the desktop, click on the “i” icon and select Clear -> Clear cache. This action will not delete your data, but will update the system configuration files.

Make sure you have an account set up Mi Account. Although local protection works without it, linking to a cloud service will allow you to restore access to blocked apps in case you lose your password or reset your settings. This is a critical step for owners Redmi Note 9who actively use the brand's ecosystem.

⚠️ Attention: The menu interface may vary slightly depending on the regional firmware version (Global, EEA, Russia). If the described paths do not match, use the settings search.

Activating protection through the Security application

The main tool for managing access in the shell MIUI is a system application Security. It is preinstalled on all devices Redmi and has an icon in the form of a green shield. Open it and scroll down the list of functions to the section Application protection.

When you first start, the system will ask you to come up with a unique graphic key or digital key password. Please note that this code may be different from the one you use to unlock the smartphone screen itself. This is done to increase the level of security: even if an attacker spied on your screen PIN code, he will not be able to enter protected apps.

After entering the code, the system will offer to link your Mi Account. Please be sure not to ignore this step. If you forget your pattern key, your account will allow you to reset your security settings remotely. Without linking, restoring access to data inside locked applications will become almost impossible without completely resetting the phone.

• 🔒 Select the type of lock: pattern, 4-digit code or mixed password.
• 📱 Link your Xiaomi account to be able to restore access.
• 👁️ Customize the display of content notifications for protected apps.
• ⚙️ Activate fingerprint unlocking for quick login.

Selecting applications to set a password

After creating the access code, a list of all installed ones will open in front of you on Redmi Note 9 apps. The system will automatically divide them into two categories: those that are already protected and those that are freely available. Your task is to move the necessary icons to the top section by activating the switch next to each of them.

It is most logical to start with instant messengers, such as WhatsApp, Telegram or Viber, since they contain the most confidential information. It's also worth protecting your banking apps and gallery. Remember that each extra protected element requires confirmation upon startup, so you should not block system utilities that you use every five minutes.

An interesting feature MIUI is the ability to hide the very presence of an application. In the protection settings, you can enable the “Hide Contents” function. In this case, the app icon will disappear from the desktop and from the menu, and you can find it only through a special gesture in dialing or through a search. This creates a second layer of defense.

Application type	Recommended level of protection	Risk in the absence of a password
Messengers	High (Password + Fingerprint)	Reading personal correspondence
Banking applications	Maximum	Financial losses
Social networks	Average (Fingerprint only)	Account access
Gallery	High	Leakage of personal photos

Biometric settings unlock

Entering a pattern each time you open the app can be annoying and time-consuming. The smartphone Redmi Note 9 is equipped with a reliable fingerprint scanner located on the side, which perfectly integrates with the application security system. In the menu Application protection find the item Fingerprint unlocking and activate it.

For this function to work correctly, you must have at least one fingerprint registered in advance in basic phone settings. The system will ask you to place your finger on the scanner to confirm. After this, logging into secure apps, such as Instagram or online banking, will be carried out instantly.

It is worth noting an important nuance: after rebooting the device or if the phone has not been used for more than 24 hours, the system will require you to enter the main pattern key or password manually. This is a security measure to prevent access to data via biometrics in special cases. Then biometric unlocking will become active again.

⚠️ Warning: If your hands are dirty or wet, the fingerprint scanner may not work. In this case, use a backup password entry method so as not to lock the device after several unsuccessful attempts.

What to do if the scanner does not see your finger?

Try registering the same finger twice as different fingerprints. This will increase the likelihood of recognition in difficult conditions, such as at an angle or in poor lighting.

Restricting access to settings and installing apps

Protecting individual applications is only part of a security strategy. An attacker or a curious child may try to remove the security app “Security” or install a new messenger to bypass the blocking. MIUI provides a function Settings protectionthat requires you to enter a password when trying to change system parameters.

To activate this option, go to Settings -> Passwords and security -> Privacy. Here you can set a ban on changing settings without confirming your identity. This will prevent resetting network settings, disabling mobile data, or deleting accounts.

It is also recommended to enable the blocking of installing applications from unknown sources. Even if someone gains access to your phone, they won't be able to install spyware or a bypass utility without your knowledge. The system will prompt you for a password every time you try to install a APKfile.

Another useful feature is locking the notification center on the lock screen. This will not allow an outsider to see the text of an incoming message from a secure messenger without even unlocking the phone. Configure this setting in the section Notifications and status bar.

Restoring access if a forgotten password

The situation when a user forgets the invented pattern happens more often than it seems. If you entered the wrong password several times, a link Forgot your password?will appear on the screen. Clicking on it initiates the recovery process through the linked one. Mi Account.

The system will send a confirmation code to the linked phone number or email. By entering this code, you can set a new access key. It is important to understand that this process resets the password specifically to protect applications, but does not delete data inside them unless the device has been completely reset.

In cases where the account has not been linked or you do not have access to the phone number, the situation becomes more complicated. The only option is to completely reset the device to factory settings through the Recovery menu. This action will delete all data from the phone, including photos, contacts and installed apps.

Recovery menu:
1. Turn off your phone.
2. Press the Power button and Volume Up.
3. Select Wipe Data -> Wipe All Data.
4. Confirm the action and wait for the reboot.

⚠️ Attention: A Hard Reset permanently deletes all user data. Use this method only as a last resort, when other recovery methods are not available.

Frequently asked questions (FAQ)

Is it possible to set different passwords for different applications?

Using standard means MIUI on Redmi Note 9 a single password is set for all selected applications. Separation of access rights with different codes for different apps is impossible without the use of third-party launchers or specialized locker applications, which can be unstable.

Will notifications be received from blocked applications?

Yes, notifications continue to arrive. However, in the protection settings you can select the “Hide Contents” mode. In this case, you will only see the name of the application and the number of messages, but the text of the correspondence will be hidden until the app is unlocked.

Does application protection affect battery life?

The impact is minimal and almost unnoticeable in everyday use. The process of checking a password or fingerprint occurs instantly when the app starts and does not require constant background activity, which could significantly drain the battery. Redmi Note 9.

What happens if I delete the “Security” application?

It is impossible to remove the “Security” system application without superuser rights (Root). Even if you try to disable it through the settings, the application protection system will remain active, since this module is deeply integrated into the shell. MIUI.

Is it possible to protect access to calls and contacts?

There is usually no direct blocking of the standard “Phone” or “Contacts” application in the application protection menu, as this may interfere with the operation of emergency calls. However, you can hide specific contacts or call logs through the “Hidden Contacts” function in the same “Security” application.