Smartphone owners Samsung Galaxy A12 often face a situation when the device starts to work slower or refuses to install new applications. This is a direct signal that it is internal memory filled to capacity. Understanding where files are physically and logically located, as well as how to manage this space, is the key to the long life of your gadget.
Unlike old phones, where files were stored in clear folders, modern versions Android and the shell One UI from Samsung are hidden system partitions from the user's eyes. However, access to storage management remains open through special settings menus. You don't need to be an engineer to understand the structure of your device's disks.
In this article we will analyze in detail the memory architecture of the model A12, show the paths to hidden directories and explain how to effectively use the memory card slot. You will learn which files can be deleted without fear, and which files absolutely cannot be touched, so as not to turn the phone into a “brick.”
Data storage architecture in Samsung A12
Technically internal memory the smartphone is an eMMC or flash memory chip soldered on the motherboard UFS. In the model Samsung A12 this chip is divided into several logical sections. The user sees only one of them - the total space for files, but the system uses hidden areas for the operation of the kernel Android.
The total amount of space available to the user is always less than that declared by the manufacturer. If you bought the 64 GB version, about 48-50 GB will actually be available. The rest is occupied by the file system and backup recovery partitions. This is normal practice for all devices based on Android.
The system prioritizes writing data to the internal storage due to its high read and write speed. Even if you have a microSD card installed, many cached data and system logs are saved to the built-in disk by default to ensure interface speed.
⚠️ Attention: Never try to manually delete files in the root directories of the system through third-party file managers with superuser rights. This can compromise the integrity of the firmware One UI and lead to an endless reboot of the device.
Understanding this structure helps to understand why simply deleting photos does not always free up enough space. Garbage often accumulates in hidden application caches, which take up space on the same physical chip as your personal data.
Samsung A12 internal memory is a fast but limited resource that the system prioritizes for system processes and cache.
How to view busy times through system settings
The most A safe and clear way to find out what's taking up space in your Samsung A12s is the built-in settings menu. It provides a graphical visualization of the distribution of data, which is much more convenient than wandering through folders.
To access this information, you need to follow the path Settings → Device maintenance → Memory. Here you will see a color chart where applications, images, videos, audio, etc. are highlighted in different shades. Clicking on any colored block will open a detailed list of files.
Particular attention should be paid to the “Applications” item. Often it is social networks and instant messengers that take up the lion's share of space, storing gigabytes of viewed pictures and videos in their internal cache. The system allows you to clear this data with one click without deleting the application itself.
- 📱 Applications —installation files and user data of apps take up space.
- 🖼️ Images —photos from the gallery, screenshots and downloaded pictures.
- 🎬 Video —recorded videos and downloaded movies.
- 📂 Documents —PDF, Word files and archives downloaded from the browser.
If you see that the “Other” category takes up an abnormally large amount of space, this may indicate the presence of forgotten downloads or residual files from deleted apps. In this case, it is recommended to use the “Clean Now” function offered by the system.
Physical location of files in Explorer
For those who prefer to work with files directly, the smartphone has a pre-installed application "My Files". This is a standard file manager from Samsung, which has access to all visible sections of the internal memory.
When you launch the application, you will see the "Internal Storage" section. This is where all user folders are physically located. The main directories that you should know include DCIM for photos from the camera and Download for downloads from the Internet.
Modern versions Android 11 and higher, on which it works Samsung A12have introduced restrictions on access to the folder. Android/data. Now you can’t just go there and delete the cache of someone else’s application without special permissions or connecting to a PC. This is done for data security purposes.
⚠️ Attention: The interface of the “My Files” application may vary slightly depending on the firmware update version One UI. If you don't find a particular folder, use the in-app search.
To find a specific file type, use the Storage Analysis tab inside the My Files app. It will show the largest files, no matter how deep in the folder they are hidden. This is a great way to quickly find a forgotten video file of several gigabytes in size.
Use sorting by size in the My Files application to instantly find the heaviest objects taking up space in the internal memory.
Using a microSD memory card as an extension
One of the main advantages of the model Samsung Galaxy A12 is the presence of a slot for a memory card. This allows you to physically expand the available space by transferring media files there and freeing up fast internal storage for system operation.
To start using, insert the card into the tray next to the SIM card. After this, the system will prompt you to configure the drive. You can use it as portable storage (for photos and music) or as internal memory (for installing applications), although the second option may slow down heavy apps.
To transfer existing files, go to Settings → Device maintenance → Memory and select "Transfer data to a memory card". The Transfer Wizard will automatically offer to move photos, videos and music to an external drive.
| Data type | Recommended storage location | Impact on speed |
|---|---|---|
| System applications | Internal memory | High speed |
| Photos and Videos | MicroSD card | Does not affect system operation |
| Messenger cache | Internal memory | Fast loading of chats |
| Music and Movies | MicroSD card | Comfortable playback |
Remember that even if you migrate data, some system thumbnails and indexes will still be stored on the internal drive. It will not be possible to completely free the built-in memory from traces of media files, but it is quite possible to significantly unload it.
What happens if you remove the memory card?
If you remove the memory card on which photos or applications are stored, access to this data will be lost until the card is reinserted. Applications transferred to the card will no longer run.
Clearing the cache and removing system garbage
Over time, so-called “system garbage” accumulates in the depths internal memory . These are temporary files, error logs, update remnants and browser caches that are no longer needed for operation, but continue to take up space.
For safe cleaning, use the built-in utility. Go to Settings → Device maintenance and click the “Optimize Now” button. The system will automatically close background applications, check security and delete unnecessary files.
Deeper cleaning is possible through the menu of each specific application. Go to Settings → Applications, select a heavy app (for example, YouTube or Instagram), go to the Storage section and click "Clear cache". This will delete temporary data without affecting your logins and passwords.
- 🗑️ Trash — do not forget to empty the trash in the "Gallery" and "My Files" application, deleted files are stored there for another 30 days.
- 💬 Messengers — use the built-in chat clearing function in WhatsApp and Telegram to delete old media.
- 🌐 Browser —go to the settings of Chrome or Samsung Internet and clear history and site data.
Regularly carrying out such procedures once a month will help maintain free space at 15-20% of the total volume. This is critical for the correct operation of the data recording mechanism in flash memory chips.
☑️ Monthly memory maintenance
Hidden sections and access through a computer
Sometimes it is impossible to find certain files using the built-in tools of a smartphone, especially when it comes to specific data from games or work apps. In such cases, connecting to a computer via a USB cable comes to the rescue.
Connect Samsung A12 to the PC and select the file transfer mode (MTP) in the notification shade. On the computer, the phone will appear as a removable disk. When you open it, you will see the same file structure, but searching and managing files may be more convenient.
You can safely delete large archives or duplicate files through your computer using the powerful search tools of the Windows or macOS operating system. However, be careful: do not delete files with extensions .apk, .obb or system folders if you are not sure of their purpose.
⚠️ Attention: When connecting to a computer, always use an original cable or a certified analogue. Cheap cables can cause an unstable connection and damage to the file system when transferring data.
You can also check the presence of a folder through your computer Lost.dir. In it, the system stores files that were damaged due to incorrect removal of the memory card or power failure. If you are sure that the data is not needed there, this folder can be cleared.
Connecting to a PC gives a wider view of the file system, but requires caution when deleting system files that the phone may be hiding from the user.
Frequently asked questions about Samsung A12 memory
Why is the memory still busy on the phone after a factory reset? 10-12 GB?
This is normal. After the reset, operating system files Android, shell One UI, as well as pre-installed applications from Samsung and Google remain on the disk, which cannot be removed using standard means. They occupy the base volume of the system.
Is it possible to transfer all applications to a memory card on Samsung A12?
No, not all. Application developers themselves decide whether to allow their app to be transferred to external media. System applications and many popular services (banks, navigators) work only from internal memory to ensure security and speed.
How to find the real amount of internal memory, and not the declared one?
Go to Settings → Device maintenance → Memory. The total volume and available space will be indicated there. The difference between the stated 64/128 GB and what you see is the space reserved for the file system and hidden recovery partitions.
Is it safe to use memory cleaning apps from the Play Market?
Most of these applications duplicate the functions of Samsung's built-in optimization. Some of them can even slow down your phone while running in the background. It is recommended to use only built-in tools Device maintenance.