Smartphone owners Samsung Galaxy A12 often wonder how to reliably protect their personal data from prying eyes. Despite the fact that the Android operating system itself does not have a built-in function to block each individual application by default, the company Samsung offers powerful tools to solve this problem. Data security is critical in today's digital world, where banking apps, personal communications, and sensitive photos are stored on your phone. The device Galaxy A12 has sufficient functionality to create a reliable barrier between your data and random users.
There are several effective ways to implement protection at the level of specific apps. You can use the proprietary feature Secure Folder (Secure Folder), which creates an isolated space on the device, or resort to trusted third-party applications from the store Google Play. Each method has its own advantages and configuration features, which we will discuss in detail in this guide. The choice of a specific method depends on what level of security you need and how deeply you are willing to dive into the system settings.
If you just want to hide icons or limit access to the gallery and instant messengers, you do not have to install complex software. The built-in Secure Folder feature on Samsung uses the Knox platform to encrypt data at the hardware levelwhich makes this method one of the most reliable among those available on the market. However, for those who prefer the classic entry of a PIN code each time the app is launched, there are simpler solutions. Let's take a closer look at all the available options and learn how to configure them correctly.
Using the Secure Folder feature to protect data
The most reliable way to protect applications on smartphones Samsung is the use of technology Knoximplemented in the function Secure Folder. This folder acts as a separate, secure space inside your phone where you can move any apps that require increased privacy. Accessing the contents of this folder will require separate authentication, be it a fingerprint, pattern, or a PIN code other than what is used to unlock the main screen.
To activate this tool, you need to go to the main settings of the device. Go to menu Settings → Biometrics and security → Secure folder. The system will prompt you to log into your account Samsung Accountif you have not done so previously. This is a mandatory requirement, since it is the account that links the encrypted data to your profile and allows you to restore access if the device is lost or the settings are reset.
After logging in, you will be asked to select the type of locking. You can configure pattern key, PIN code or use biometric data. It is recommended to combine biometrics with a backup PIN in case the fingerprint sensor does not work. Once the setup is complete, a new folder icon will appear on the desktop. Now you can add any applications from the main list there, and they will become invisible and inaccessible without authorization.
If you forget the password for the Safe Folder, you can restore access only through your Samsung account, so make sure you remember the data for login.
⚠️ Attention: Moving an application to the Secure Folder creates a separate copy of it. Data inside the folder (for example, the history of correspondence in the messenger) will not be synchronized with the main version of the same application outside the folder.
Setting up blocking through third-party applications
If for some reason using Secure Folder is not suitable for you or you want to block applications without moving them to a separate directory, you can use third-party software. The store Google Play presents many utilities, such as AppLock, Norton App Lock or Smart AppLock. These apps work on the principle of placing a protective layer on top of the application being launched, requiring you to enter a password before opening.
The process of installing and configuring such utilities is quite simple and intuitive. After downloading and installing the app, you will need to grant it the necessary permissions. The key point here is to provide the right to display on top of other applications and access to accessibility. Without these permissions, the app will not be able to intercept the launch of other apps and block them.
After granting permissions, you will see a list of all apps installed on your Samsung A12 apps. Simply select the ones you want to protect by clicking on the lock icon next to the name. Most of these applications allow you to set a single password for all selected apps or set up individual codes for each of them. There is also often a “False Password” function, which opens a set of fake applications if you are forced to unlock your phone.
- 🔒 AppLock - a popular solution with support for masking secrets and protection against deletion.
- 🛡️ Norton App Lock - a reliable product from a well-known antivirus developer with a minimalistic interface.
- ⚙️ Smart AppLock - a utility with a wide range of settings, including blocking system settings.
Restricting access through Digital Wellbeing
In the Android operating system installed on Galaxy A12, there is a built-in tool Digital well-being and parental controls. While its main purpose is to limit screen time, it can be adapted to create temporary app blocking. This method does not require the installation of additional software and uses the smartphone's system resources, which has a positive effect on the device's performance.
To configure, go to the section Settings → Digital well-being and parental controls. Here you will see a graph of your app usage for the day. By clicking on the hourglass icon next to the desired application, you can set a time limit. When the set time (for example, 1 minute) has expired, the application will be blocked with a gray icon, and it will not be possible to launch it again for the rest of the day without changing the settings.
To make this lock truly secure and prevent it from being removed quickly, you need to activate the mode Parental Controls inside the same menu. You will need to create a special PIN that will be requested when you try to change time limits or turn off restrictions. Thus, even if someone tries to go into the settings, he will not be able to extend the running time of a blocked application without knowing the code.
⚠️ Attention: This method blocks the application after a period of time, and not every time it is launched. For instant protection every time you open it, it is less effective than Secure Folder or AppLock.
This method is great for self-control or limiting children's access to games and social networks at certain times of the day. However, to protect banking data or personal correspondence from unauthorized adults, this method may not be strict enough, since the blocking is removed automatically the next day.
Blocking system settings and important functions
In addition to regular applications, Samsung A12 you can protect access to important system functions, such as changing network settings, disabling mobile data or Reset phone settings. This is especially true if children use the phone or if you are afraid that the device may be stolen and an attacker will try to disconnect the connection.
To limit changes in the settings, you can use the App pins (App Pinning) mode. This feature allows you to “pin” one application to your screen, preventing you from leaving it without entering your screen unlock password. It is activated in the menu Settings → Biometrics and security → Other security settings → App pins.
When the function is activated, you can open any application, press the browse button (square), then tap the application icon at the top of the screen and select the pin icon. Now the user will not be able to minimize the application, go to the menu or turn off the phone in the standard way. To exit, you must simultaneously hold down the "Back" and "Browse" buttons, after which the system will require you to unlock the device.
| Protection method | Security level | Setting complexity | Impact on the battery |
|---|---|---|---|
| Secure Folder | High (Knox) | Medium | Minimum |
| AppLock (third-party) | Medium | Low | Average (background work) |
| Digital well-being | Low (time) | Low | Absent |
| Application pinning | High (complete blocking) | Low | None |
Pinning an application is ideal for giving the phone to a child to play without fear that he will delete the app or call someone.
Hide applications from the home screen
Sometimes Users Samsung Galaxy A12 need not so much to block the application with a password, but to make it invisible to prying eyes. The standard shell One UI allows you to hide applications directly from the desktop without deleting them from the phone's memory. This creates an additional level of privacy, since the app icon simply disappears from the application menu.
To implement this function, you need to go to the home screen settings. Press and hold your finger on an empty area of the desktop, then select Settingsfrom the menu that appears. In the list of options, find the item Hide applications. A list of all installed apps will open, where you can tick the ones you want to hide.
After confirming your selection, the icons will disappear from the general list. However, therefore, this method is best used in combination with other protection methods, for example, placing hidden applications inside Secure Folder for double protection.
How to find hidden applications?
To see hidden applications, go back to the desktop settings → Hide applications. There will be a “Hidden Applications” section where you can uncheck the boxes and return the icons to their place.
It is worth noting that hiding applications does not protect the data inside them. If someone knows the name of the app, he can try to launch it through the voice assistant Bixby or Google Assistant. Therefore, for truly confidential data, it is recommended to use encryption and passwords, and not just visual hiding.
Solving problems and common errors during setup
In the process of setting up protection on Samsung A12 users may encounter a number of technical nuances. For example, third-party locking apps may not work properly due to Android's aggressive battery optimizations. The system may automatically close the background blocker process, considering it unnecessary, which leads to protection failures.
To avoid this, you need to add the blocker application to the list of power saving exceptions. Go to Settings → Device maintenance → Battery → Background restrictions and make sure that your application is not in the "Applications in Deep Sleep" list. It is best to switch it to Unlimitedmode so that it always works correctly.
Another common problem is the conflict between several methods of protection. Simultaneous use Secure Folder and third-party AppLock for the same application may lead to a double password request or the app freezing at startup. In such situations, it is recommended to select one main method and disable the others for a specific application.
- 🔋 Check the battery settings so that the system does not “kill” the blocker process.
- 🔄 Update the protection application to the latest version via Google Play.
- 🚫 Do not install two blockers at the same time on one application.
⚠️ Attention: The settings interface may vary slightly depending on the One UI firmware version installed on your Samsung A12. If you do not find an item, use the search at the top of the settings menu.
☑️ Security check
Frequently asked questions (FAQ)
Can I restore access to Secure Folder if I have forgotten the password?
Yes, if you have linked the folder to Samsung account. If you enter the wrong password several times, the Reset Secure Folder button will appear. By clicking on it and entering your Samsung account password, you can reset the protection. However, all data inside the folder will be permanently deleted for security reasons.
Does setting a password for applications affect the speed of the Samsung A12?
Using the built-in Secure Folder has virtually no effect on the speed, since it is optimized by the system. Third-party locker apps may slightly increase the launch time of apps and consume more battery power due to constant work in the background.
Will you receive notifications from applications located in the Secure Folder?
By default, notifications from applications inside the Secure Folder are not displayed on the lock screen and in the notification panel of the main profile. This is done for privacy reasons. You can change this in the settings of the Secure Folder itself, allowing the display of notifications.
Is it possible to set different passwords for different applications?
The standard Secure Folder uses one common password to enter all applications within it. If you need different passwords for different apps, only some third-party applications, such as AppLock, support this feature.
What should you do if the application crashes when you try to enter the password?
Try clearing the cache of the locking application in the phone settings. If the problem persists, uninstall and reinstall the blocker, making sure that you give it all necessary access rights, including the right to overlay on top of other windows.