Owners of modern smartphones Samsung Galaxy often face a lack of built-in storage, especially if the device has a basic configuration of 64 or 128 GB. Installing heavy games and professional applications quickly fills up the system partition, causing the interface to slow down. The solution to the problem is to use an external drive, but the process of transferring data has its own technical nuances.
The Android operating system on devices One UI provides tools for memory management, but they are not always obvious to the average user. It is important to understand that not all apps can be moved without losing functionality. Some system utilities are strictly tied to internal storage for the sake of security and stability.
In this article we will analyze in detail the algorithm of actions necessary for correct data migration. You will learn about the operating modes of memory cards, format features FAT32 and exFAT, as well as hidden settings that open up additional opportunities for optimizing space.
Preparing a memory card and selecting an operating mode
Before you start moving files, you need to properly prepare the external drive. Insert card microSD into the smartphone slot and wait for the notification about connecting a new device. The system will offer two options for use: portable storage or internal memory.
Portable storage mode allows you to store media files, documents and some application data, leaving the card accessible to other devices without formatting. This is the most secure option for those who often change memory cards or use them in cameras and players.
⚠️ Attention: When you select the “Internal Memory” (Adoptable Storage) mode, the card will be formatted and encrypted. After this, it will become unreadable for other devices and will only work in conjunction with this specific smartphone.
To transfer heavy games, the portable storage mode is most often used, since it is less critical to failures. However, if your goal is to completely unload the system partition, it is worth considering the option with internal memory, having previously made a backup copy of all data from the card.
Use memory cards of the UHS-I Class 10 standard or higher. Slow cards can cause significant delays when launching transferred applications.
Standard method of transferring through settings
The easiest way to change the location of the application is available through the standard settings menu. This method works for most user apps whose developers have allowed installation on external media.
Open the smartphone settings and go to the Applicationssection. Select the app you are interested in from the list. If the developer has provided the ability to transfer, the “Storage” button will be active and you will see the current amount of space occupied.
Click on the item Storage and find the button Edit. In the window that appears, the system will prompt you to select a target drive. If the memory card is formatted correctly, the option SD card.
- 📂 Select item SD card in the storage selection menu.
- 🔄 Wait for the data copying process to complete without closing the settings window.
- ✅ Make sure that the application status has changed to “On SD card.”
Worth Please note that some application data will still remain in the internal memory. These are the necessary configuration files and cache that ensure a quick start of the app. It will not be possible to completely free the internal partition using this method alone.
Using developer mode to force a transfer
If the “Change” button is missing or inactive, you can take advantage of the hidden capabilities of the operating system. Activating developer mode allows you to enable the function of forcing applications to be written to external media.
To access these settings, go to the menu About phone and find the item Software information. Click 7 times in a row on the item Build number. After this, a new section will appear in the main settings menu Developer options.
Inside this section you need to find the option Do not unload applications from memory or Allow saving to external drives. The names may differ depending on the version Android and shell One UI.
Settings → Developer options → Allow saving to external drivesAfter activating the switch, it is recommended to reboot the device. Now, when installing new applications, the system may offer a memory card by default, and a transfer option may appear in the menu of old apps.
⚠️ Attention: Forced transfer of system applications can lead to unstable operation of the smartphone. Move only those apps whose purpose you are sure of.
Features of transferring games and heavy applications
Modern mobile games often take up several gigabytes of space. When migrating such applications, it is important to consider their file structure. The main executable file (APK) can be moved, but additional cache files (OBB) often remain in the internal memory.
To completely transfer the game, you may need to manually transfer folders through a file manager. Find the directory Android/obb in the internal storage and copy the folder with the name of the game to a similar directory on the memory card.
| Data type | Default location | Possibility of transfer | Impact on speed |
|---|---|---|---|
| APK file | Internal memory | Full | Minimum |
| Cache (OBB) | Internal memory | Manual/Partial | Average |
| User data | Internal memory | Depends on application | High |
| Media files | Internal memory | Full | None |
Keep in mind that the speed of reading data from a memory card is usually lower than from the built-in flash drive. This can lead to longer loading times for levels in games or slower opening of heavy applications.
Why can’t some games be transferred?
Developers deliberately block transfer to an SD card to protect against piracy and ensure stable operation of anti-cheat systems that require quick access to files.
Solving common problems and errors
During the migration process, users may encounter an “Insufficient space” error or a message stating that the application does not support the migration. Often the reason lies in the file system of the memory card.
Make sure the card is formatted in a compatible format. For modern devices Samsung the optimal choice is exFATwhich supports files larger than 4 GB. The format FAT32 has limitations and may not be suitable for large games.
If the transfer is interrupted in the middle, check the integrity of the memory card. Bad sectors may prevent data from being written. Try formatting the card through the menu Settings → Device maintenance → Storage → SD card → Format.
- 🛠 Check for system updates One UI, as new versions often correct errors in working with external drives.
- 🧹 Clear the app cache before attempting a transfer to reduce the amount of data moved.
- 🔋 Make sure the battery charge is at least 30% to avoid losing power during the operation.
In some cases, resetting app permissions helps. Go to application settings, select the menu (three dots) and click “Reset application settings”. This will not delete your data, but will restore access rights to the original values.
☑️ Diagnosing problems with the SD card
The impact of transfer on device performance
Moving applications to a memory card is a compromise between free space and operating speed. The built-in memory of smartphones Samsung uses interfaces UFS 2.1 or UFS 3.1which significantly exceed the speed of even the fastest microSD cards.
When running a migrated application, the processor has to read data from a slower medium. This may manifest itself in the form of micro-slowdowns when first launched or when loading resources in games.
However, for applications that do not require high response speed (for example, e-readers, simple utilities, archives), the difference will be almost unnoticeable. It is critically important not to transfer system services and instant messengers to the card, on which the stability of the connection depends.
⚠️ Attention: Memory card interfaces and speed standards are constantly updated. Before purchasing a new card, check the specifications with the manufacturer's official website to ensure compatibility with your phone model.
If you notice that your phone starts to run slower after transferring apps, try returning your most frequently used applications back to the internal memory. The balance between occupied space and performance is the key to comfortable use of a smartphone.
Transfer to the memory card only those applications that you rarely use, or heavy games with a large cache size, to maintain system performance.
Frequently asked questions (FAQ)
Is it possible to transfer WhatsApp and Telegram to a memory card?
It is impossible to completely transfer these messengers, since they critically depend on the speed of the internal storage for the database to work. However, in the settings of the application itself, you can change the path where media files (photos and videos) are saved to the SD card.
What happens to applications if you remove the memory card?
Applications installed on the card will no longer launch, and their icons may disappear from the desktop or become inactive. The data is not deleted, but access to it will not be possible until the card is reinstalled.
Why does the application take up space in the internal memory after transfer?
This is normal system behavior. Some files (libraries, settings, cache) are always stored in the internal partition to ensure security and performance. Only the main part of the code and resources is transferred.
How to return the application back to internal memory?
The process is similar to transferring it to a card. Go to Settings → Applications, select the app, click Storage, then Change and select Internal memory.
Does transferring applications affect the smartphone warranty?
No, using a memory card and transferring applications using standard operating system tools does not violate the manufacturer’s warranty. This is the intended functionality of the device.