Xiaomi and Redmi smartphone owners often face the need to hide personal correspondence or financial data from prying eyes. Standard screen locking methods, such as a pattern lock or fingerprint scanner, protect the device only from turning on, but leave all the programs inside available to anyone who unlocked the phone. The built-in shell of MIUI and its successor HyperOS offer powerful tools to personalize each installed software, making your gadget a truly personal store of information.
Application protection works on a system level without requiring third-party software to slow down the device, especially for budget models where every megabyte of RAM is on the bill. In this article, we will discuss in detail how to activate this tool, what are the nuances in different versions of the firmware and how to secure your data as efficiently as possible.
Many users do not even realize that their phone can hide not only the icons themselves, but also notifications of new messages, making the process of using hidden programs completely invisible to others.
Preparation for security settings in MIUI
Before you start setting restrictions, you need to make sure that your Mi Account is activated and linked to your device, a security requirement that allows you to restore access to hidden data in the event of a reset or loss of password. Without an associated account, the system may not allow you to use advanced security features, considering the device is not secure enough.
It’s also worth checking for system updates, as the security menu interface has been slightly modified in recent versions of HyperOS for user convenience. Navigation by item may vary depending on whether you have a global firmware version installed or a Chinese build. Make sure the device has a screen unlock password, as it will become a basic level of protection.
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If you forget the Mi Account password, it will be almost impossible to restore access to hidden apps without losing data.
It's important to understand the difference between simply hiding icons and fully locking them, because hiding only removes the label from the desktop, but the application continues to work in the background and its processes are visible in the Task Manager, and blocking requires you to enter code or biometrics at each run, ensuring that even the open window of the program does not fall into the wrong hands.
Activation of the function "Application Protection"
The main tool for setting up access is in the standard Security app, which is preinstalled on each smartphone of the brand. To get to the desired menu, launch the app with the green shield icon and scroll down to the tool list below to the Application Protection section, where you will need to specify a unique password, which may differ from the screen unlock password.
The system will offer several authentication options: a pattern lock, a digital code or the use of biometrics. It is recommended to choose the same type of protection as for the lock screen, so as not to get confused in the future. Once you create a password, you will be asked to add a secret question to restore access, which is a critical step.
☑️ Setting up application protection
Once the function is activated, all the installed programs will appear in the list. You just need to switch sliders against those applications that should be protected. Most often, users choose messengers, a gallery, banking applications and notes. The system immediately applies the settings, and the next time you run the selected software, you will be asked to enter a password.
Using biometrics for quick access
Entering a password can be tedious every time, especially if you often access secure data. Xiaomi and Redmi’s modern smartphones allow you to use a fingerprint scanner or facial recognition to unlock applications instantly, not only speeds up the process, but also increases security, since biometric data is harder to forge than a simple graphical pattern.
To activate this option, you need to go to the settings of the application protection function itself. In the upper right corner of the screen, there is usually an icon of a gear or arrow leading to additional parameters, you need to find the item "Use fingerprint" or "Use face unlock" and activate the corresponding switch.
It’s worth noting that once the device is restarted, the system will still require you to enter the primary password at least once, a standard Android security procedure that prevents unauthorized access to data before the cryptographic keys are fully loaded, and once you first enter the biometrics will work normally until the next phone shuts down.
Hiding applications and notifications
One of the most sought-after features in the Xiaomi ecosystem is the ability to not just block, but completely hide applications. There is a tab on the Application Protection menu called Hidden Apps. By going there, you can select programs whose icons disappear from the desktop and from the menu of all applications.
To open a hidden application, you need to use a special gesture, usually a set of a specific character or sequence of actions in the Themes or Gallery application, or using a search widget. In recent versions of the firmware, access to hidden applications is often through a search in the control center or through a special widget on the desktop.
It also allows you to hide the contents of notifications, so if you block the messenger, the text of the message will be replaced with asterisks or hidden completely on a locked screen or in the notification curtain, which prevents someone from seeing the notification, but cannot read the contents of the message without unlocking the application itself.
⚠️ Note: Hidden apps don’t appear in the list of recently launched programs.If you open a hidden messenger and then fold it, its icon won’t appear in the list of running tasks, which provides an additional level of privacy.
Comparison of data protection methods
Different methods of restricting access have their advantages and disadvantages depending on the use case, and understanding these differences will help you choose the best security strategy for your device.
| Protection method | Level of security | Usability | Hiding the fact of existence |
|---|---|---|---|
| Application lockdown | High-pitched | Medium (password/finger needed) | No (icon visible) |
| Hiding applications | Average (knowledgeables will find) | Low (must remember gesture) | Yeah (no icon) |
| Second space | Very tall. | Low (switching profiles) | Yes (complete isolation) |
| Screen locking | Basic | High. | No. |
As you can see from the table, for maximum privacy, it is better to combine methods, for example, you can hide the application, and the hidden space itself is additionally protected by a password, but the most reliable method is the use of the “Second Space” function, which creates a completely isolated environment on the phone.
What is Second Space?
Second Space as an Alternative
If you don't have a standard app lock, you should look at the Second Space feature, which is a fully isolated environment running parallel to the main system, where you can install individual copies of social networks, banking applications, and store personal files there.
The second space is accessed through a special fingerprint or password, and for an outsider who only knows the password from the main screen, your phone will look like normal, with no sign of a second profile, ideal for those who want to fully share their work and personal lives on a single device.
⚠️ Note: When you reset your phone to a factory setting, the data in Space Two will be deleted along with the main profile data.
Switching between spaces takes a couple of seconds and doesn't require rebooting, and a special switch pops up in the notification curtain to instantly change the context of your smartphone usage, which is much more convenient than constantly entering passwords for each individual application.
Frequent problems and their solution
Users may experience a situation where the security function stops working or the application is launched without a password request, often due to a system update or errors in the operation of the Security application itself, in which case it is recommended to clear the cache of this system component through the phone's settings menu.
Sometimes the problem is access rights. Make sure the Security app is allowed to appear on top of other windows and has all the necessary system privileges. If you use third-party launchers (desktop shells), the application hide feature may not work properly or be available.
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System application protection on Xiaomi works most stable on a standard launcher and does not require third-party utilities that can collect your data.
In rare cases, after MIUI updates, the security settings may get lost. If you notice that previously blocked applications have opened, check the settings again. Also, remember to change your password periodically, especially if you have shared it with someone in the past.
Why can’t the Security app be removed?
Recommendations for the maintenance of security
Application protection is not a one-time action, but a process. Regularly check the list of blocked programs, especially after installing new software. New applications are not added to the protection list automatically, they must be selected manually each time.
Don't use simple passwords like "1234" or "0000." Even if the application is hidden, the weak password is easy to pick up by pumpkin. Combine numbers, letters and symbols if the type of protection allows it. Biometrics is more reliable in this regard, but you still need to have a backup complex password.
Remember that no security system gives a 100% guarantee if your device is infected with malware. Use only proven sources to install apps and avoid suspicious links. A comprehensive approach to the security of your Xiaomi is key to keeping your personal data intact.