Smartphone owners Samsung Galaxy A12 often face the need to restrict access to certain apps. This may be caused by the desire to protect personal photos and correspondence from prying eyes or the need to control the time that children spend in games and social networks. Modern mobile devices store a huge amount of confidential information, so the issue of data protection becomes a priority for most users.
Fortunately, the operating system Android in the shell One UI provides powerful built-in tools to solve this problem without the need to download dubious software. In this article, we will look in detail at how to block applications on Samsung A12 three different methods: through the Knox Folder function, using built-in restrictions, and using third-party utilities. You will find out which method is right for you depending on your goals.
Using the Secure Folder function for complete isolation
The most reliable and effective way to hide and block access to apps on devices Samsung is to use a secure folder Secure Folder. This feature creates an isolated space in your phone's memory that is protected by a password, PIN, or biometric data. Applications moved here become invisible to the main screen and cannot be launched without additional authorization.
To activate this option, you must go to the security settings. The setup process takes only a few minutes, but requires account linking Samsung Account. This is necessary to synchronize data and restore access if you lose your password. After enabling the function, a new icon will appear in the application menu through which hidden content is managed.
It is important to understand that the applications inside Secure Folder work as independent copies. This means that you can install two instances of the same app: one regular and one protected. For example, this is convenient for separating work and personal accounts in instant messengers. The data inside the folder is encrypted at the platform hardware level Knox, which guarantees a high degree of protection.
Use different fingerprints to enter the main interface and Secure Folder to instantly switch between access modes without entering a password.
⚠️ Attention: Do not delete the Secure application Folder without first transferring the data back to the main memory, otherwise all information inside the protected container will be irretrievably lost.
To move a app to the protected area, you need to go inside the folder, click on the plus and select the desired items from the list of installed apps. The system will automatically create a copy and transfer it. The original application will remain on the main screen, so it is recommended to delete it manually if you want to completely hide the fact of its presence on the device.
Setting restrictions through Digital Health
If your goal is not so much to hide the application, but to limit the time it can be used or block the launch at a certain time, you should use the built-in tool Digital Health. This settings section allows you to control screen time and set limits for specific utilities. While this doesn't hide the icon, it effectively prevents launching once the limit has been reached.
The feature is especially useful for parents who want to protect their children from excessive gaming or social media. In the settings, you can set a timer, after which the application icon will turn gray, and when you try to start, the system will require you to enter the device administrator password. This disciplines the user and helps control the digital balance.
To configure, go to the menu Settings → Digital health and parental controls. Here you will see usage statistics for all apps per day or week. By clicking on a specific application, you can set a focus timer or use the “Bedtime” mode, which blocks selected apps at night.
It is worth noting that this method does not ensure the confidentiality of content. Anyone with access to the screen of an unlocked phone can see notifications from a locked app or access it if the time limit has not yet expired. Therefore, to protect privacy, it is better to combine this method with other protection methods.
Blocking through notification and access settings
Partial blocking can be implemented by disabling notifications and limiting background activity. While this doesn't prevent you from launching the app manually, it does make it less noticeable and convenient to use. This is a good option for apps that you rarely use, but do not want to delete.
In the settings of each application there is a section Notifications. By disabling them, you will rid the lock screen of pop-up messages that could indicate the presence of an important correspondence or call. In addition, you can prevent notification content from being displayed on the lock screen in general security settings.
Another level of restriction is prohibiting the installation of applications from unknown sources or restricting access rights. In the Settings → Applications section you can select a specific app and revoke its permissions to access the camera, microphone or contacts. Without these rights, the functionality of the application will be greatly reduced, which will actually make it useless for an outsider.
Disabling notifications is not a complete blocking, but a way to hide the activity of the application from prying eyes on the lock screen.
For deeper settings, you can use the mode Limited profile, if it is supported by your firmware version, or create a separate user. In guest or second user mode, the set of available applications can be strictly regulated, and the personal data of the main user will be completely hidden.
Third-party applications for blocking startup
If the built-in tools are not enough, specialized utilities from the store come to the rescue. Google Play. There are many locker apps that impose a password on the launch of any selected applications. They work on the principle of launch interception: when you click on the icon, a password entry window first opens, and only after successful authentication the app itself opens. Popular solutions include other analogues. When installing such software, you must provide it with extended access rights, including the right “on top of other windows” and access to usage history. Without these permissions, the blocker will not be able to correctly intercept launch commands.
Popular solutions include AppLock, Norton App Lock and other analogues. When installing such software, you must provide it with extended access rights, including the right “on top of other windows” and access to usage history. Without these permissions, the blocker will not be able to correctly intercept launch commands.
- 🔒 AppLock — allows you to set different passwords for different applications and has the function of hiding the icon of the blocker itself.
- 🛡️ Norton App Lock —a solution from a well-known antivirus vendor, characterized by high reliability and the absence of intrusive advertising.
- 👀 Smart AppLock —offers the “Second Space” function and the ability to take a photo of the face the one who entered the password incorrectly.
Using third-party software has its own risks. Such apps require deep integration into the system, which theoretically can reduce device performance or consume additional battery power. In addition, you need to carefully choose the developer so as not to install malware under the guise of a blocker.
How to bypass blocking by a third-party application?
Some users try to remove the blocker application through the phone settings. To prevent this, in the settings of the locker itself, you need to activate deletion protection, which requires entering a password before uninstallation.
⚠️ Attention: By granting device administrator rights to a third-party application, you trust it with complete control over the phone. Use only proven apps with high ratings and a large number of reviews.
Comparison of locking methods on Samsung A12
The choice of the optimal method depends on your specific tasks. If you need to hide data from strangers, Secure Folderis best suited. To control children's screen time, it is more effective to use Digital health. Third-party lockers are convenient when you need flexible configuration of passwords for different apps without moving them.
The table below compares the main characteristics of each method to make it easier for you to decide on a strategy for protecting yours Samsung Galaxy A12.
| Method | Level protection | Hide icon | Setting complexity |
|---|---|---|---|
| Secure Folder | High (encryption) | Yes (full) | Medium |
| Digital health | Low (time limit) | No | Low |
| Third-party AppLock | Medium (login password) | Optional | Low |
| Guest mode | High (isolation) | Yes (for profile) | High |
Each method has its advantages and disadvantages. Secure Folder is the most integrated solution for the ecosystem Samsung, while third-party applications offer more visual settings and functions, such as fake error windows when entering an incorrect password.
Common problems and their solutions
When setting up a lock, users may encounter a number of difficulties. For example, an application may spontaneously unload from memory, ceasing to perform its locking function. This is often associated with aggressive system power saving, which closes background processes. To avoid this, you need to add the blocker application to the battery optimization exclusion list. Go to Android, which closes background processes.
To avoid this, you need to add the blocker app to your battery optimization exceptions list. Go to Settings → Device maintenance → Battery → Background restrictions and make sure that the desired app is in the "Applications that never sleep" list.
☑️ Diagnosing blocking problems
Another common problem is a forgotten password for a protected folder or locker. In the case of Secure Folder you can reset the password through your account Samsung Accountif this option was enabled in advance. Third-party applications often provide a verification email or security question.
⚠️ Note: The menu interface and item names may vary slightly depending on the One UI firmware version installed on your Samsung A12. Always check the manufacturer's current reference materials.
FAQ: Frequently Asked Questions
Is it possible to block built-in system applications on the Samsung A12?
You cannot completely remove or block the launch of critical system applications without root access, as this can lead to unstable operation of the system. However, they can be disabled in the settings (Settings → Applications), which will hide their icon and stop working. The Secure Folder function usually does not allow you to add system utilities there.
What should I do if I forgot my Secure Folder password?
If you have linked a Samsung account and enabled the reset option, click “Forgot password” on the input screen and follow the instructions to reset via email. If this option was not enabled, the only way to regain access is to delete the Secure Folder through the settings, but all data inside it will be lost.
Do applications installed in the Secure Folder see my main data?
No. Applications inside the protected folder run in an isolated environment. They don't have access to your main profile data, such as your gallery, contacts, or files, unless you explicitly transfer them there through the Move to Secure Folder feature.
Does locking apps slow down your phone's performance?
Using built-in features like Secure Folder or Digital Health has little to no impact on performance. Third-party locker applications can consume additional RAM and battery resources, especially if they are constantly running in the background and monitoring the launch of other apps.
Is it possible to bypass application locking by rebooting the phone?
Rebooting does not remove the lock. After you turn on your device, you will still need to enter your password, pattern, or fingerprint to access your protected apps or folder. The exception is some poorly written third-party lockers, which may have vulnerabilities, but reliable applications remain protected after a reboot.