The situation when a smartphone refuses to copy or move photos, videos and documents is familiar to many users. You are trying to send a file to another folder or to a memory card, but the system throws an error or the process freezes. This is not just an annoying little thing, but a signal that there are problems with the file system.
The reasons can vary from a banal lack of free space to serious access rights conflicts in the security system. Android. Understanding the root of the problem often allows you to solve it in a couple of minutes without contacting a service center. Let's take a look at why this happens and how to regain control of your data.
In this article we will conduct a complete diagnosis of the problem. We will look at errors related to the memory card, internal storage limitations, and features of modern versions of the operating system. You will learn what tools to use to correct the situation.
Problems with the memory card and physical media
One of the most common causes of failure is a malfunction or incorrect operation of the external memory card microSD. If you are trying to move files specifically to or from it, the system may block the operation if read errors are detected.
Often the memory card goes into read-only mode. This is a protection mechanism that is triggered when the card controller detects critical failures in the memory cells. In this state, you can view files, but it is no longer possible to write or move them.
It is also worth checking the physical contact. Oxidation of contacts or poor fixation in the slot lead to periodic disconnections. The system perceives this as removing the drive and interrupts the write operation.
⚠️ Attention: If the system prompts you to format the memory card to eliminate errors, make sure that you have copied important data to your computer. Formatting will completely delete all information from the media.
For diagnostics, try removing the card and inserting it into the card reader on the computer. If the PC also cannot write files, the problem is definitely in the drive itself, and it will most likely need to be replaced.
Use the SD Card Formatter utility from the SD Association to properly format memory cards, since standard Windows formatting may not be correct for Android.
Critical lack of free space
Many users forget, that the operation of moving files often works on the “copy-paste-delete original” principle. This means that at the time the task is completed, the file requires temporary space equal to its size.
If the internal memory of the smartphone is full to capacity, the system simply has nowhere to create a temporary copy of the file before deleting the original. The process freezes or displays the “Not enough space” error, even if you simply change the directory within one drive.
This is especially critical for large video files in resolution 4K or game images. Even if the target folder is empty, the clipboard requires free space on the system partition to process the transaction.
- 🗑️ Delete the cache of heavy applications such as Telegram or YouTubethrough the phone settings.
- 📸 Transfer old photos and videos to a cloud service or computer before moving new ones.
- 📦 Clear the folder
Downloadsof installation files APKthat are no longer needed.
It is recommended to always leave at least 10-15% of the total memory free. This is necessary not only for moving files, but also for the correct operation of the system cache and background processes.
Permission restrictions in new versions of Android
Starting with Android 11 and especially in Android 13-14Google has implemented strict file system access restrictions known as Scoped Storage. Applications no longer have full access to all folders without explicit user permission.
A standard file manager may not have write rights to system directories or folders of other applications. If you try to move a file to a protected system folder, the operation will be blocked by the security policy.
In some cases, granting special permissions through the settings menu helps. However, working with system files often requires superuser rights (root), obtaining which will void the warranty on the device.
Try using third-party file managers, such as Total Commander or Solid Explorer. They often know how to correctly request the necessary permissions from the system to perform operations on files.
⚠️ Attention: Do not try to move files from a folder
/Android/dataor/Android/obbmanually without understanding their purpose. This may cause applications to stop launching.
How to give access to system folders?
In the accessibility settings or in the "Access to files and media" section for a specific file manager, you must allow access to all files, not just media.
File manager malfunctions
Sometimes the problem lies not in the files, but in the application itself that you use to manage them. Standard Explorer may freeze, accumulate cache errors, or simply not work correctly after a system update.
If the interface freezes when moving files, and then returns to its original state without changes, try to force stop the application. This will reset its current state and clear the RAM occupied by the process.
It's also worth checking for updates for your file manager. Developers often release patches that fix bugs related to the operation of certain file types or data transfer protocols.
| Action | Where to find | Effect |
|---|---|---|
| Clear cache | Settings → Applications → File manager → Storage |
Removing temporary errors without data loss |
| Forced stop | Settings → Applications → File manager → Stop |
Restarting the application process |
| Resetting settings | Settings → Applications → File Manager → Reset |
Returning File Explorer to factory settings |
If the standard tool does not work, installing an alternative application often solves problem instantly. This allows you to exclude a software failure of a specific system component.
First of all, when moving freezes, always clear the file manager cache - this solves 80% of software glitches.
File name conflicts and prohibited characters
File system Android, Linux based, file name sensitive. Although it is more flexible than Windows, there are restrictions on the use of special characters in names.
If you are trying to move a file whose name contains characters like /, \, :, *, ?, ", <, > or |, the operation may be rejected. This happens especially often when transferring files from a computer to a phone.
The problem also occurs if a file with the same name already exists in the target folder. The system may not show the file replacement dialog box, but simply silently abort the operation if the file manager is not working correctly.
Try to rename the file, removing all special characters and leaving only Latin letters and numbers. This often removes the block on movement.
- ✂️ Shorten a file name that is too long if it exceeds 255 characters.
- 🔤 Replace the Cyrillic characters in the name with Latin ones before moving.
- 📝 Check if there are hidden characters at the end of the name spaces that could have been copied accidentally.
File system errors and the need for verification
Over time, logical errors may occur in the data storage structure. This sounds like the file index table is fragmented or corrupted. The system “sees” the file, but cannot correctly change its address in memory.
To correct such situations, a file system check is required. On Android, this can be done through recovery mode (Recovery Mode) or by connecting to a PC and using disk check utilities.
If you have rootrights, you can use terminal commands to check the disk. However, for regular users, it is safer to use the built-in diagnostic tools or format the drive.
fsck /dev/block/mmcblk1p1This command starts checking and correcting file system errors on the specified partition. Be careful: incorrect use of the console may lead to data loss.
⚠️ Attention: Recovery menu interfaces may differ on smartphones of different brands (Samsung, Xiaomi, Pixel). Before entering this mode, check the instructions for your specific model so as not to reset the phone to factory settings by accident.
☑️ File system diagnostics
Frequently asked questions (FAQ)
Why do files move very slowly?
Low speed may be caused by using an old class memory card Class 4 or Class 6. Also, the speed drops if many background applications are running at the same time or if the file is heavily fragmented.
Is it possible to restore files if the movement is interrupted?
Yes, in most cases the file remains in the original folder, since the operation of deleting the original occurs only after the copy has been successfully written. Check the source directory. If the file has disappeared, try using data recovery apps.
Will resetting to factory settings help?
This is a last resort. Resetting will delete all data and applications, but is guaranteed to correct software errors in the file system if the problem is not physical damage to the memory card or memory chip.
Why can’t you move files to an SD card in Android 13?
In new versions of Android, some system folders and application data are protected from being written to external media for security purposes. You can only move personal media files (photos, videos, music) and documents.