Modern smartphones, especially flagship models Samsung Galaxy, are equipped with excellent cameras that allow you to take pictures in 4K and 8K resolution. However, high image quality inevitably leads to the fact that the device’s built-in memory fills up critically quickly. Users often encounter notifications about low space, which prevents them from installing updates or new applications.
The optimal solution to the problem is to use external memory. Transferring photos to a flash drive allows you to free up gigabytes of space while maintaining access to archives at any time. Unlike cloud storage, physical storage does not require an Internet connection and guarantees the confidentiality of your data.
In this article we will analyze in detail all the current methods of connecting a USB drive to devices Samsung. You will learn about the nuances of working with the interface USB Type-C, features of file systems and methods for safely removing equipment. This guide will help you organize your gallery in a few minutes.
Required equipment and preparation for work
Before you start copying files, you need to make sure you have compatible equipment. Most modern smartphones Samsung equipped with a port USB Type-C, which supports the technology USB On-The-Go (OTG). This allows you to connect peripheral devices, such as flash drives, keyboards or mice, directly to the phone.
If you have an old flash drive with a connector USB-A (standard large connector), you will need a special adapter (OTG adapter). For new models with a connector Type-C at both ends, an adapter is not needed. It is also important to check the file system of the drive: Android works best with formats FAT32 or exFAT.
Format NTFS, standard for Windows, may not be readable without installing additional drivers or special applications. Therefore, if your flash drive is new or has previously been used only on a PC, it is recommended to format it in advance into a compatible format on your computer.
⚠️ Attention: Formatting a flash drive completely deletes all data from it. Before starting the procedure, be sure to copy important information from the drive to your computer, if the necessary files are there.
Make sure that your smartphone is charged at least 20-30%. The process of transferring a large amount of data can consume energy, and suddenly turning off the device while writing files can lead to their damage or corruption of the file system.
Connecting a flash drive to a Samsung smartphone
The physical connection process is extremely simple, but requires care. Insert the plug of the flash drive or adapter into the charging connector of your Samsung Galaxy. The Android system automatically recognizes the new device and should make a characteristic connection sound.
Immediately after the connection, a corresponding icon will appear at the top of the screen in the notification area. It may look like a USB drive or "USB drive connected." If you unlock the screen, you will see a pop-up window asking you to open the contents of the drive.
In some cases, especially when using non-original adapters or flash drives with high power consumption (for example, SSD drives), the phone may report a lack of energy. In such a situation, you will need an external power source or a more powerful adapter.
What to do if the phone does not see the flash drive?
If the smartphone does not respond to the connection, try the following steps: 1. Clean the charging port from dust. 2. Test the flash drive on another device. 3. Make sure the file system is compatible (FAT32/exFAT). 4. Reboot the phone with the drive connected.
After successful recognition, you can proceed directly to file management. To do this, use the built-in file manager, which is on every device Samsung by default.
Using the "My Files" application for copying
The main tool for working with data in the shell One UI is the system application My files (My Files). It allows you to view internal memory, SD cards and connected USB drives. You can find it in the application menu or through the search.
To start transferring, open the application and go to the Internal memorysection. All folders with your phone data are located here. Find the directory DCIM, and inside it the folder Camera —this is where the photos you take are stored by default.
Select the files you need. You can select individual photos by tapping and holding them, or use the All function in the control menu to copy all the content at once. After selection, click on the menu button (three dots) and select Copy or Move.
☑️ Photo transfer algorithm
The difference between copying and moving is significant: when copying, the originals remain in the phone’s memory, taking up space, and when moved, they are deleted from the source and appear only on the flash drive. To free up space, it is better to use the function Move.
Now return to the main menu of the "My Files" application and find the section USB drive (or the name of your flash drive). Go inside, select the desired folder or create a new one, click menu and select Insert. The process of writing data will begin.
Alternative methods through the Gallery and PC
It is not necessary to use a file manager for simple operations. The application Gallery also allows you to work with external drives. Open the desired photos, click on the menu icon and select the option “Copy to...” or “Move to...”, then specify your USB drive.
This method is convenient when you need to quickly transfer several selected pictures without diving into the folder structure. However, for mass transfer of thousands of photos, a file manager remains a more effective and reliable tool.
Another option is to use a computer as an intermediary. Connect your phone to the PC via cable, select the "File Transfer" (MTP) mode in the phone notification. Then copy the photo from the phone to the computer, turn off the phone and connect the USB flash drive to the PC to write files to it.
| Method | Speed | Convenience | Requirements |
|---|---|---|---|
| Direct connection (OTG) | High | Maximum | Adapter or Type-C flash drive |
| Via Gallery | Average | High | Nothing extra |
| Via PC | Depends on the cable | Low | Computer and two cables |
The choice of method depends on your current conditions. If there is no computer at hand, a direct connection via OTG is the only and fastest way to solve the problem.
Working with large amounts of data and video
Transferring video in high resolution (4K, 8K) requires more time and connection stability. When working with large files, the system may not show a progress bar in real time, giving the impression of freezing. Do not interrupt the process, even if the screen goes dark.
To speed up the work, you can turn off the screen or start the transfer and minimize the application. However, make sure your phone doesn't go into deep power saving mode, which could limit background USB activity.
If you're copying gigabytes of data, it makes sense to break the process down into steps. For example, transfer photos by year or month. This will reduce the risk of errors in the event of a failure and will make it easier to control the filling of space on the flash drive.
⚠️ Attention: Do not remove the flash drive while recording! Even if the progress indicator has disappeared, the system may be finishing background cache writing. A sudden eject is guaranteed to result in the loss of the last recorded files.
Use the sort function in the file manager to see how much space is already occupied. This will help you plan how many more photos will fit on the current drive without reaching 100% capacity, which slows things down.
Safely remove and disconnect the drive
Proper shutdown of an external drive is the key to its long life and data safety. In the Android operating system, you cannot simply pull out the flash drive, as is sometimes done on a PC (although it is risky there too).
Pull the notification shade down. Look for a notification about your connected USB drive. Click on the Safe removal (Eject) button. Wait for the system message that the drive can be disconnected.
Only after this message appears will it be safe to physically disconnect the flash drive. If you use an adapter, first disconnect the flash drive from the adapter, and then the adapter itself from the phone to avoid mechanical damage to the port.
Tip: If you often transfer photos, buy a flash drive with two connectors (Type-C and USB-A). This will save you from having to carry a separate adapter with you and reduce the risk of losing small parts.
If the notification disappears and you did not have time to click “Eject,” you can use the settings. Go to Settings → Device maintenance → Storage, find your flash drive in the list and click the eject button there.
Possible problems and solutions
Despite the simplicity of the procedure, users may encounter with a number of technical difficulties. Often the problem lies in the file system format. As mentioned earlier, NTFS may not be read. The solution is formatting on a PC in exFAT.
Another common issue is a damaged charging port or a low-quality adapter cable. Cheap adapters often do not support data transfer, working only for charging. Use only certified accessories Samsung or trusted brands.
If the phone sees the flash drive, but does not allow you to write files ("Read-only file system" error), check whether a physical switch is installed on the adapter Lock. This may also mean that the file system of the flash drive is damaged and requires error checking.
⚠️ Attention: Interfaces and menu item names may vary slightly depending on the shell version One UI and the model of your smartphone. The location of the settings may change after major Android updates.
In rare cases, clearing the My Files application cache helps. To do this, go to Settings → Applications → My files → Storage → Clear cache. This will not delete your files, but will clear temporary errors in the app.
Main conclusion: Using an OTG adapter and a built-in file manager is the fastest and safest way to transfer photos without losing quality and the need for Internet.
Frequently asked questions (FAQ)
Is it possible to transfer photos to a flash drive without losing quality?
Yes, when copying or moving files through a file manager (My files), the data is copied bit by bit. The image quality remains identical to the original, no compression occurs.
Why does the phone write “Not enough power” when connecting a flash drive?
This means that the power consumption of the drive exceeds the capabilities of the phone port. This often happens with external hard drives (HDD). For their operation, you need an adapter with additional power.
What is the maximum capacity of a flash drive supported by Samsung?
Modern smartphones Samsung usually support drives up to 1 TB and even 2 TB, provided they use a file system exFAT. Older models may have a limit of 128 GB or 256 GB.
Is it possible to install applications on a flash drive?
In modern versions of Android (starting from 6.0 and above), the ability to install applications on external memory is officially limited by developers to increase system stability. You can only transfer media files and documents to a flash drive.
What to do if photos have been transferred but cannot be opened?
Check the integrity of the file. The copying process may have been interrupted. Try copying the file again. Also make sure that your image viewer has rights to access the external drive.