The situation when the screen is suddenly blocked by a message about lack of space is familiar to many smartphone owners Samsung. The device begins to work slower, the cameras refuse to shoot new videos, and installing updates becomes impossible. The user falls into a stupor, trying to understand where the gigabytes that seemed free just yesterday have gone. In fact, the operating system Android is designed in such a way that free space is spent not only on your personal photos and applications.
The main reason lies in the accumulation of temporary files, cache and system logs that are not deleted automatically. Modern models, such as Galaxy S23 or Galaxy A54have complex file systems where junk data can occupy up to 20% of the total storage space. Ignoring this problem leads to performance degradation and accelerated wear of flash memory.
In this article we will analyze the deep mechanisms of memory filling, learn how to find hidden files and use built-in optimization tools correctly. You will understand the difference between user data and system processes, which will allow you to keep your smartphone in perfect condition without losing important information.
⚠️ Attention: Do not delete files from system folders manually if you are not sure of their purpose. This may lead to incorrect operation of the operating system or cyclic reboot of the device.
Anatomy of storage: where does the space go?
The first thing the owner needs to understand Samsung is the structure of memory distribution. The standard layout divides the space into a system partition, an application partition, and a user partition. It often happens that the user sees free space in the file manager, but the system writes the opposite. This is due to the reserved areas for virtual memory and swap.
The application cache plays a special role. Social networks and instant messengers, such as Telegram or WhatsAppsave every picture and video viewed to local storage. Over time, this data can grow to tens of gigabytes. The system considers them useful for fast loading, but for the user they are just ballast.
Why does the system show less space than it actually is?
Manufacturers often indicate the full capacity of the memory chip, but the operating system and formatting take up about 10-15% immediately after purchase. In addition, the binary number system is used (1 GB = 1024 MB), while the marketing system is decimal (1 GB = 1000 MB).
It is also worth considering the features of the file system ext4 or f2fsused in Android. They require a free buffer to write data efficiently. If the free space falls below a critical threshold (usually 10-15%), the write speed drops exponentially, and the wear of memory cells increases.
The system partition and reserved areas can take up to 20 GB on modern smartphones, and this is normal, you should not try to clear them.
Hidden eaters: cache, logs and deleted remains applications
So-called “hidden” files cause the greatest irritation among users. After uninstalling a heavy application or game, folders with configuration files and residual garbage often remain in memory. In the environment Android this phenomenon is known as “orphaned data”. You can find them in the root directory or in the folder /Android/data.
Another invisible consumer is debug logs and error reports. If the system fails, Samsung can create a report of several hundred megabytes. These files lie dead until you decide to send them to the developers or delete them manually through the engineering menu or ADB.
- 📂 Folders
DCIM/.thumbnails— thumbnails of your gallery are stored here, which can weigh more than the originals if there are a large number of photos. - 📂 Directory
Download—a classic repository of forgotten APK installers and PDF documents that everyone forgets about. - 📂 Cache of streaming services— Spotify, YouTube and Netflix caching content for smooth playback, taking up gigabytes.
For deep cleaning, it is recommended to use the built-in storage analyzer. It shows a visual map of the occupied space, which is much more convenient than a standard list of files. Pay attention to the "Other" section; the largest and most incomprehensible files are often hidden there.
Use the "Secure Folder" mode with caution: files inside it are encrypted separately and take up additional space that a standard analyzer may not show correctly.
Messengers and social networks: the main enemies of free places
Modern instant messengers have turned into full-fledged operating systems inside a smartphone. Telegram, for example, by default caches all media files that you have ever viewed in channels. Without manual configuration, this process can take up all available memory in a matter of weeks of active use.
The situation is aggravated by the automatic saving of all incoming photos and videos to the gallery, even if you did not open them. This creates duplicates: one file in the application database and the second in the general gallery WhatsApp the situation is aggravated by the automatic saving of all incoming photos and videos to the gallery, even if you did not open them. This creates duplicates: one file in the application database and a second one in the shared gallery Samsung. Dual storage is a luxury that devices with 64 or 128 GB of memory cannot afford.
⚠️ Attention: Media autoloading settings in instant messengers may change after application updates. Regularly check the "Data and Storage" section in the settings of each messenger.
To solve the problem, you need to go to the settings of each application separately. In Telegram this is the section Settings → Data and memory → Memory usage. There you can set a cache limit or enable auto-cleaning. In Viber i WhatsApp you need to disable saving to the gallery for group chats, which are often overwhelmed with advertising mailings.
Cleaning tools: built-in versus third-party
In the owner's arsenal Samsung there is a powerful built-in tool - Device Care (Device Care). It is integrated deeply into the shell One UI and has rights to remove system garbage that are not available to regular applications from the Play Market. Using third-party “cleaners” is often not only useless, but also harmful, since they consume resources in the background.
Third-party applications like CCleaner or Files by Google are good for analysis, but their aggressive cleaning functions can delete necessary files if you configure the filters incorrectly. The built-in analyzer Samsung is safer because it knows the folder structure of a specific phone model.
For advanced users, it is possible to connect the smartphone to a PC and use the utility adb. This allows you to delete the system cache and remnants of remote applications that the interface cannot reach. However, this method requires caution and basic knowledge of the command line.
| Tool | Security | Efficiency | Risks |
|---|---|---|---|
| Device Care (Built-in) | High | Medium/High | Minimal |
| Files by Google | High | Average | Low |
| SD Maid | Average | High | Medium (permissions required) |
ADB Shell (PC) |
Low (for beginners) | Maximum | High (can break the OS) |
It is recommended to start with standard tools. Go to Settings → Device care → Memory and click "Clear Now". If this does not help, proceed to manual analysis of the folders.
☑️ Safe cleaning algorithm
Photos and videos: how to manage media files effectively
Media files are what takes up the lion's share of memory for 90% of users. Modern cameras Samsung record in high resolution, and one minute of 4K video can weigh 400-500 MB. The format HEIF/HEVC helps save space, but not all applications and PCs can open it without conversion.
It is important to regularly check the "Trash" folder in the gallery. Deleted photos do not disappear without a trace, but are stored there for 30 days, continuing to take up space. It is also worth paying attention to the "RAW" mode in professional shooting: such files weigh 20-30 MB each and are needed only for serious post-processing.
The ideal solution is to use cloud services with the "smart gallery" function, for example Google Photos or OneDrive (integrated into Samsung). They store the originals in the cloud, and leave compressed copies or only previews on the phone. This frees up gigabytes, leaving access to photos via the Internet.
What is the HEIC format and is it worth using?
HEIC (High Efficiency Image Coding) compresses photos 2 times better than JPEG without loss of quality. However, older versions of Windows and some sites may not open such files directly.
System updates and reinstalling applications
After a major update Android or shell One UI, the system creates a backup copy of the current firmware in case of a rollback. This file can occupy 5-8 GB and is automatically deleted after a couple of weeks if the system is stable. But sometimes this process freezes, and the file remains forever.
Another problem is the bloat of installed applications. Over time, the application database can take up more space than the application itself. For example, a browser with a 2GB cache will be slow. In such cases, it is more effective not to clear the cache, but to completely reinstall the application.
If the memory fills up immediately after clearing, the system may have failed to index media files. In this case, rebooting in safe mode or resetting network and application settings helps. This will not delete your personal data, but will return the system settings to factory settings.
⚠️ Attention: The menu interface and item names may vary depending on the version One UI and model of your Samsung. If you do not find an exact match, look for sections that are similar in meaning.
Why does the memory fill up immediately after cleaning?
This may be a sign of malware that creates logs, or a malfunction of the system process Media Scanner. It's also possible that the app continues to cache data faster than you can delete it. Check the list of recently installed applications.
Is it possible to use an SD card as internal memory?
In modern versions Android and shell One UI the "Adoptable Storage" function (using the card as part of the system) is often blocked by the manufacturer for the sake of speed. The card can only be used to store photos, videos and documents, but not to install applications.
Is it safe to delete the Android folder?
Absolutely not. Deleting the folder Android will lead to the loss of data from all applications, resetting game settings and possible system crash. You can only clear the contents of folders cache within specific application directories, and then with caution.