Owners of Samsung Galaxy smartphones often face a lack of built-in memory, especially when the system begins to warn about critical storage capacity. This is due to the growth in the size of modern applications, messenger caches and photo quality. A solution to the problem can be the competent use of a microSD memory card, which allows you to free up valuable internal space for system operations.
Moving data to external media is not just copying files, but a complex procedure, depending on the version of the operating system Android and shell One UI. In recent updates, Samsung has limited the ability to completely transfer apps, but left optimization tools. Understanding these mechanisms will help you effectively manage device resources without losing performance.
In this article we will analyze all the available methods: from standard settings to using developer modes. You will learn which applications can be moved and which will remain only in the internal memory, and how to make the system work faster by freeing up the main partition.
Preparing a memory card and checking compatibility
Before you start transferring data, you need to make sure that your memory card meets the speed and capacity requirements. For modern Samsung Galaxy smartphones, it is recommended to use standard cards UHS-I or UHS-II with a speed class of at least 10. Using slow cards can lead to lags in the operation of applications that will be launched from an external drive.
Insert the card into the slot and wait for the system notification. If the card has previously been used in another device, the phone will prompt you to format it. This process will destroy all data on the media, so back up important files to your computer or to the cloud in advance.
- 📱 Make sure your smartphone is turned off before installing the card (if the tray design does not allow hot swapping).
- 💾 Select the exFAT file system for cards larger than 32 GB to support files larger than 4 GB.
- ⚙️ Check in the settings that the card operating mode is set to “Portable storage” and not “Internal memory”.
It is important to note that not all models support working with large-capacity cards. Officially, many devices work with microSD up to 1 TB, but stability depends on the memory controller of a particular device.
⚠️ Attention: After formatting the card for a specific Samsung device, it may not be readable on other phones or computers without reformatting.
Use memory cards from trusted brands (Samsung, SanDisk, Kingston), since cheap analogues often fail after several months of active data recording.
Standard transfer method through application settings
The main method of moving data is available in the application management menu. This method allows you to transfer part of the user data and the app cache to external media, if the application developer has allowed this option. To access these settings, you will need to open the menu Settings → Applications.
Select the desired application from the list. If the transfer function is available, the "Edit" or "Move to SD card" button will be active in the storage menu. If there is no such button, the application is firmly tied to the system partition and cannot be moved using standard means.
☑️ Checking the possibility of transfer
It is worth considering that even after transferring some files will remain in the internal memory. These are system libraries and critical data required to run the app. Mostly space is freed up for multimedia content and temporary files.
| Data type | Default location | Possibility of transfer |
|---|---|---|
| APK application file | Internal memory | Partially |
| Cache and user data | Internal memory | Yes (often) |
| Updates (OBB) | Internal memory | Yes (manually) |
| System libraries | System partition | No |
The moving process can take from a few seconds to several minutes depending on the size of the data. Do not interrupt the phone at this moment so as not to damage the file structure of the application.
Setting up the camera and gallery to work with SD
The most effective way to free up space is to redirect the recording of new files directly to the memory card. The Samsung Galaxy camera allows you to change the default save path, which will automatically send all new photos and videos to an external drive.
To do this, open the Camera application, go to the settings (gear) and find the "Save location" item. Switch the toggle switch to "SD card". Now all high-resolution pictures and 4K videos will be recorded directly, bypassing internal storage.
However, existing photos will not be moved automatically. You will need to transfer the DCIM and Pictures folders manually or through the My Files menu. Be careful when moving: if you interrupt the process, some files may become unreadable.
It is also recommended to check the settings of instant messengers such as Telegram and WhatsApp. In their storage settings, you can specify the path to the memory card for downloading media files, which will significantly save space in the system partition.
⚠️ Attention: If you remove the memory card, photos taken during this period will not be displayed in the gallery until the card is returned to its place.
Using Developer Mode (Force Allow)
For advanced users, there is a hidden Android feature that allows you to move applications that do not officially support the SD card. This option is called "Force external storage permission". Activation requires enabling developer mode.
To get to the developer menu, go to Settings → About phone → Software information. Find "Build Number" and quickly click on it 7 times in a row. After a message appears indicating that you have become a developer, a new section "Developer Options" will appear in the main settings menu.
Settings → Developer options → Forced permission...Turn on the switch opposite "Allow applications to be placed on external storage" item. After this, you need to reboot the device. Now, when you try to move an application through the standard menu, the button may become active even for those apps that were previously grayed out.
Risks of using developer mode
Forced transfer of system or unstable applications can lead to their incorrect operation, crashes, or complete failure to launch. Use this feature only for simple utilities and games.
Keep in mind that applications from external media are always slower than from internal flash memory. Running heavy games or data-intensive apps can lead to noticeable interface lags.
Moving cache and OBB files for games
Heavy games often take up several gigabytes of space due to OBB resource files. A standard application transfer often leaves these files in the internal memory. To move them, you will need a file manager, for example, the built-in “My Files” or a third-party Total Commander.
OBB files are usually located along the path Android/obb/. Find the folder with the name of the game you want (for example, com.roblox.client) and move it entirely to the memory card in a similar folder structure. It is important to preserve the directory structure, otherwise the game will not find its resources.
- 🎮 Close the application or game before moving files to avoid access conflicts.
- 📂 Create a folder
Android/obbon the memory card, if it is missing. - 🔄 After moving, check the game operation; In some cases, you may need to download the data again.
Some modern versions of Android restrict access to the Android folder on external drives for security purposes. If the system prohibits movement, try using a computer: connect the phone via USB, copy the files to the PC, then transfer them to the SD card.
⚠️ Attention: File system interfaces and access rights may change with Android updates. If standard methods block access, use specialized file managers with access rights to system folders.
Transferring OBB files manually is the only way to really free up gigabytes of space in games, since the standard "Move" button often ignores this data.
Possible problems and solutions
In the process of optimizing memory, users can face a number of difficulties. The most common problem is the message "Not enough space" even when there is free memory on the card. This is due to file fragmentation or temporary file system errors.
If the application stops launching after the transfer or does not work correctly, try clearing its cache or reinstalling it. In some cases, formatting the memory card directly through the phone settings helps, which creates the optimal partition structure for this model.
Slow operation of the phone after transferring applications indicates a low write speed of the memory card. The internal memory of Samsung smartphones uses UFS technology, which is significantly faster than most microSD cards. It is better to leave critical applications on the internal drive.
Why is the "Move" button inactive (gray)?
This means that the application developer has prohibited its installation on external media. Many modern applications (banks, instant messengers, Google system services) require working exclusively from internal memory to ensure security and stability.
Is it possible to make a memory card into internal memory?
The Adoptable Storage function, which allows you to completely combine memory, is officially disabled in the One UI shell on Samsung smartphones. The card only works as additional portable storage.
What will happen to applications if you remove the card?
Applications moved to the card will no longer run, and their shortcuts may disappear from the desktop. The data will only be available after returning the card to the same slot.
How to learn how much space is occupied by applications?
Go to Settings → Device Maintenance → Memory. It displays detailed statistics on the use of space by the system, applications, images and other files.
Does the transfer affect the speed of the phone?
Yes, it can have a negative effect. The random block reading speed on SD cards is lower than on internal memory. Heavy games and applications may take longer to load.