Owners of smartphone series Samsung Galaxy know very well how quickly the internal storage runs out, especially if you like to shoot videos in 4K or install heavy games. When low-space notifications start popping up with alarming regularity, expanding your memory becomes the only sensible option. Fortunately, many models of the South Korean giant have retained a microSD card slot, which can significantly increase the amount of available space.
Data transfer is not just copying files from one folder to another, but an important procedure for optimizing the operation of the device. Proper distribution of information between internal memory and external storage helps the system work faster, and you don’t have to worry about every new photo. In this guide, we will look at all the nuances of working with external drives on Android, from physical installation to fine-tuning the system.
Before taking active steps, it is worth noting that modern versions of the shell One UI from Samsung offer several scenarios for using the card. You can use it as portable storage for media files or try adapting it to install apps, although recent versions of Android limit this feature for security reasons. Let's look at the process in detail.
Preparing the memory card and smartphone for work
The first step should always be to verify the compatibility and physical integrity of the media. Not every card is suitable for your Samsung Galaxy, especially if you plan to store heavy files or run applications there. Slots in modern flagships are often combined with a slot for a second SIM card, so special care is required when removing the tray.
Make sure that you are using microSDHC or microSDXC cards, as older standards may simply not be detected by the system. To record high-definition video, it is recommended to select media with speed class U3 or V30, otherwise the video may be interrupted or recorded jerkily. Insert the card into a switched off phone or use hot swapping if your model supports this feature without data loss.
⚠️ Attention: Before removing the SIM card tray, make sure that the smartphone is completely turned off if you are not sure that your specific model supports hot swapping. Moisture or dust on the tray contacts can cause a short circuit.
After physical installation, the system usually detects the new drive itself and offers to format it. Format is the process of creating a file system, without which the phone will not be able to write data. Remember that this operation completely clears the card, so if there are important files on it, copy them to your computer in advance.
☑️ Check before installation
Basic setup and formatting of the drive
As soon as you insert the card, a system notification will appear on the screen. Click on it to launch the setup wizard. If the notification disappears, go to Settings → Device maintenance → Memory. Here you will see a list of all storages and can manage them. The system will offer to use the card as portable storage, which is the most versatile option.
The formatting process creates an exFAT or FAT32 file system, which ensures compatibility with other devices such as cameras, tablets and computers. This means that you can remove the card at any time and read the data on your PC without additional drivers. However, if you choose to format it as internal storage (Adoptable Storage feature), the card will be encrypted and cannot be read by other devices.
For most Samsung users, portable storage mode remains the best choice. It allows you to flexibly control what data will be transferred. After formatting is complete, a new tab will appear in the memory menu with the name of your card and information about the occupied space.
| Option | Portable storage | Internal memory |
|---|---|---|
| Encryption | No | Yes (binding to device) |
| Porportability | High (works on PC) | Low (only on this phone) |
| Installing applications | Limited | Full |
| Stability | High | Depends on card speed |
Why does Samsung limit the installation of applications on SD?
Samsung, like Google, believes that memory cards are slower than built-in flash memory. Installing heavy applications on external media can lead to interface lags and unstable system operation, so this function is often hidden or limited.
Transferring photos and videos through the Gallery application
The most voluminous content that takes up space on a smartphone is the media library. To move already taken pictures, open the standard application Gallery. Select the album or individual photos you want to transfer. Click on the three dots in the corner of the screen or the “More” button to open the context menu.
In the list that appears, select the “Move to” option. The system will prompt you to select a target folder. Find your SD card in the list (it may be called “Memory Card” or have a brand name, for example SanDisk). Create a new folder for order or select an existing one, such as DCIM or Pictures.
It is important to distinguish between the “Copy” and “Move” functions. When copying, the originals remain in the internal memory, taking up space, and duplicates appear on the card. The function Move physically rewrites the file to a new medium and deletes the original, freeing up space on the phone. For 4K video files, this process may take several minutes.
Use the “Select All” function with caution when transferring thousands of photos - it is better to break the process into batches of 500-1000 files, so as not to overload the smartphone’s RAM and avoid freezing of the interface.
Settings cameras for recording directly to the card
In order not to transfer files manually every time, you can configure your Samsung camera to automatically record new photos and videos directly to an external drive. Open the application Camera and click on the settings gear in the upper left corner. Scroll down the list of options to “Save Location.”
Activate the “SD card” switch. From now on, all new photos and videos will be saved to external storage by default. This is especially convenient for travelers who take thousands of shots per day and don't want to constantly clear the main memory.
One thing to keep in mind, however, is that burst mode or high-resolution video recording (such as 8K or Super Slow-mo) may temporarily switch to internal memory if the card's write speed is insufficient. In such cases, the system itself will decide where it is safer to save the file so as not to interrupt shooting.
Transferring applications and games to an external drive
With the release of new versions of Android, Google has limited the ability to completely install applications on external cards for security reasons. However, the partial transfer option is still available for some apps and games on Samsung. Go to Settings → Applications and select the desired app from the list.
Click on “Memory”. If the application developer has allowed the transfer, the “Edit” button will be active there. In the window that opens, select “SD card”. The system will transfer some of the data (cache, resources), but the main system files will remain inside the phone. If the button is gray or missing, it means that the application does not support working with external storage.
For games with large caches (data of several gigabytes), this method is especially relevant. Transferring game data can speed up level loading if your phone's internal memory is very full and slow. But you should not transfer critical system applications or instant messengers that you use constantly - this can lead to their unstable operation.
⚠️ Attention: Settings interfaces may differ depending on the version of One UI and the model of your Samsung. If you do not find the “Change” item in the application memory, it means that the manufacturer or software developer has prohibited this operation.
Using a file manager for bulk transfer
For more advanced users and working with system folders, the built-in file manager “My Files” is best suited. This is a powerful tool that allows you to see your directory structure just like on your computer. Launch the application and go to the “Internal storage” section.
Here you can find folders Download (Downloads), Documents or messenger folders (for example, WhatsApp/Media). Highlight the desired files with a long press, click “Copy” or “Move” in the action menu. Then go to the “Memory Card” section and paste the files into the desired directory.
The advantage of this method is the ability to sort and create a complex folder structure. You can categorize files by year, type, or project. Also, through “My Files” it is convenient to clear the cache of Telegram or other instant messengers, transferring heavy video files to an external drive.
The “My Files” file manager is the most reliable tool for working with data on Samsung, allowing you to perform copying, moving and compression operations without installing third-party software.
Frequent problems and ways to solve them
Sometimes users are faced with a situation where the phone stops seeing the map or files disappear. Most often this is due to improper extraction. Always use soft disable via the notification shade or settings before physically removing the card. A sudden yank can damage the file table.
Another common problem is the “File is too large” error. This happens if the card is formatted with the old FAT32 file system, which does not support files larger than 4 GB. There is only one solution: format the card in exFAT, having first saved the data.
If the card is detected as “Blank” or “Unsupported”, try inserting it into the computer’s card reader and checking for errors using standard Windows tools. Sometimes a complete formatting is required with the removal of all partitions for the phone to start working correctly with the drive again.
Is it possible to transfer WhatsApp completely to an SD card?
It is impossible to completely transfer the WhatsApp application with all data to an SD card in modern versions of Android. You can transfer only media files (photos and videos) by changing the settings inside the messenger itself in the “Storage and Data” section. The databases and the application itself will remain in the internal memory.
Why did the photos disappear from the Gallery after the transfer?
Most likely, the file was moved to a folder that the system does not scan as a media storage, or the thumbnail database was lost. Try rebooting your phone. If it doesn’t help, check the folder through “My Files” - most likely, the photo is there, the Gallery just didn’t update the cache.
What is the maximum card capacity that Samsung supports?
Most modern Samsung smartphones officially support cards up to 1 TB. However, in practice, many models (especially those released after 2020) successfully work with cards with a capacity of 1.5 TB and even 2 TB, if they have the correct exFAT file system.