Smartphone users Samsung Galaxy often encounter an annoying notification that the device’s memory is full. The situation becomes critical when the system reports that the system partition is full, even if you have not downloaded many heavy applications. This blocks the installation of updates, the creation of new photos and the normal operation of instant messengers. The problem is relevant for series models A, M and S with different volumes of built-in storage.
In this article we will analyze in detail where the free space goes and how to safely free up gigabytes without losing important contacts and data. You will learn about hidden cache files, shell features One UI and deep cleaning methods that do not require root access. It is important to approach the issue comprehensively, since simply deleting one folder rarely solves the problem radically.
Before taking active steps, it is necessary to diagnose the current state of the storage. Understanding the memory structure (occupancy) will help you choose the right cleaning tool. Ignoring system warnings can lead to the smartphone starting to work extremely slowly or stop loading altogether.
Diagnostics of occupied space through settings
The first step should always be a visual assessment of what exactly is eating up the resources of your drive. In modern versions of Android, the interface has become more informative, allowing you to see not only the total volume, but also the distribution by category. Go to the menu Settings and find the section Device maintenance or Memory. Here the system will provide a color usage chart.
Pay attention to the category System. Sometimes it takes up a disproportionate amount of space due to accumulated error logs or temporary files after unsuccessful updates. If this partition is bloated to an unnatural size (for example, more than 10-15 GB on a device with 64 GB of memory), this is a clear sign of a software glitch. In this case, simply clearing the cache may not help, and more serious measures will be required.
Also check the section Other. This often includes files that the system cannot classify: remnants of deleted applications, game download packages, or messenger data saved in closed directories. Clicking on this category sometimes allows you to see a list of specific files that can be safely deleted manually through the file manager.
⚠️ Warning: If you see the size of the "System" category constantly growing even after a reboot, this may indicate a problem with the media file indexing service. Try turning off and turning on the phone in safe mode for diagnostics.
Clearing the application cache and system partition
The fastest way to free up space is to delete temporary files that accumulate while apps are running. Every installed application, from a browser to a calculator, creates its own temporary data to speed up startup. Over time, this cache can reach gigabytes, especially for social networks and video services.
To manually clear it, go to Settings → Applications. Select an application that takes up a lot of space (often YouTube, Instagram or TikTok) and click on the item Storage. Here you will see two buttons: "Clear data" and "Clear cache". Press only the second one so as not to lose logins and login settings. Repeat the procedure for all heavy apps.
There is also a method for clearing the system cache through the recovery menu Recovery Mode. This method deletes temporary files of the entire operating system without affecting your personal photos and contacts. To get to this menu, you need to turn off the phone and hold down the key combination (usually Volume up + Power button for new models without a Home button, or Volume top + Home + Enable for old ones).
- 🧹 Use the built-in Memory Cleaner tool in the Device Manager application to quickly delete junk files.
- 📱 Clear your browser cache regularly Chrome or Samsung Internet, since they save copies of all visited pages.
- ⚙️ In the Recovery menu, select the item
Wipe Cache Partition, confirm the action with the power button and reboot the system.
After clearing the cache in Recovery Mode, the first boot of the phone may take longer than usual (up to 5-10 minutes). This is normal, the system rebuilds optimized files.
Managing your media library and transferring files
High-resolution photos and videos are the main consumers of free space on a modern smartphone. A single minute-long 4K video can weigh hundreds of megabytes. If your internal memory is full to capacity, it is critical to transfer media files to external media or cloud storage.
Smartphones Samsung support format memory cards microSD. By inserting the card, you can configure the camera so that all new photos are saved directly to it. To do this, open the Camera application, go to settings (gear) and select Save location, indicating the memory card. Old files can be moved through the app My filesby highlighting the DCIM and Pictures folders and selecting the "Move" function.
An alternative solution is to use cloud services such as Google Photos or Yandex.Disk. These applications allow you to configure automatic uploading of pictures to the Internet with the “Free up space” function. After uploading photos to the cloud, the application will delete their local copy, leaving them available for viewing via the Internet. This effectively turns the unlimited cloud into an extension of your memory.
| File type | Approximate size | Storage recommendation |
|---|---|---|
| Photo (12 MP) | 3-5 MB | Internal memory or cloud |
| Video (Full HD) | 100-200 MB/min | SD memory card only |
| Video (4K 60fps) | 400-600 MB/min | External hard drive / PC |
| RAW images | 25-40 MB | Only for professional processing |
⚠️ Attention: Before formatting the memory card, make sure it is in good working order. Low-quality SD cards can lead to data loss or a system freeze when trying to record.
☑️ Preparing to transfer photos
Analysis of the Downloads folder and junk files
The folder Download (Downloads) often turns into a digital dump that users forget about. APK installation files, PDF documents, pictures from instant messengers and archives are automatically saved here. Many of these files were needed once and now uselessly take up space on the system partition or shared memory.
Open the application My files and go to the category Downloads. Sort files by size or date. You'd be surprised how many app installers are left after a software update. Feel free to delete all files with the extension .apkif you have already installed the appropriate apps. Also check the archives .zip and .rar —they often contain distributions that are no longer needed.
Pay special attention to messenger folders. WhatsApp and Telegram create separate directories for downloaded media. Inside the folder Android/media/com.whatsapp or Telegram there may be thousands of viewed pictures and videos that are duplicated in the gallery. Deleting them from the file manager will clear up space, but keep in mind that you will not be able to view these files in your chat history again.
How to find hidden large files?
In the My Files application, click on the three dots in the corner and select "Storage Analysis". The system will show files larger than 500 MB, regardless of which folder they are located in. Often these are forgotten movies or system dumps.
Features of One UI and system updates
The shell One UI from Samsung has its own memory management features. Function Smart Manager automatically monitors the device's status, but sometimes its algorithms are too aggressive or, conversely, miss important files. Firmware updates also require a significant reserve of free space to unpack the installation package.
If the system says that there is not enough space for the update and there is nothing to delete, try using the Cleaning before updatingmode. In some versions of the software, when you try to install an update, the phone itself suggests deleting temporary files and cache to free up the required volume (usually about 5-6 GB of free space is required). Do not cancel this procedure if you decide to update.
It is also worth checking the function RAM Plus (virtual RAM). It uses part of the built-in memory to expand RAM. If you have a model with a small storage capacity (for example, 64 GB), disabling RAM Plus in settings Device Maintenance → Memory → RAM Plus may give you back a few gigabytes of usable space, although it may reduce multitasking slightly.
Remember that after After a major Android update, the system creates a backup copy of the previous firmware version in case of a rollback. This file can take up to 10 GB and is deleted automatically after a couple of weeks if the system is stable. It is difficult to force its removal manually without root access, so it is better to just wait.
Disabling the RAM Plus function on devices with low memory (up to 64 GB) is an effective way to instantly get several gigabytes of free space.
Radical measures: Reset to factory settings
When all methods have been exhausted, and the message “System memory is full” does not disappear, the last argument remains - a full reset. This procedure will return the phone to the state it was in when purchased, deleting absolutely all user data, applications and settings. This is guaranteed to solve problems with file system software errors.
Before starting the procedure, it is critical to make a full backup. Use account Samsung Cloud or Google Drive to save contacts, calendar and settings. Be sure to copy photos and documents to a computer or memory card. After the reset, you can restore data from the cloud when you first set up your phone.
To perform a reset, go to Settings → General settings → Reset → Reset data. The phone will ask you to confirm your password or pattern. The process will take from 5 to 15 minutes, after which the device will reboot and begin the initial setup. Do not interrupt the power supply at this time to avoid damaging the software.
⚠️ Attention: Resetting to factory settings is irreversible. Make sure you remember the password for your Google account, as after resetting the phone will require you to enter it to confirm ownership (FRP protection).
Frequently asked questions (FAQ)
Why does the memory fill up immediately after wiping?
This may be caused by background services that immediately start caching data, or the presence of a malicious application that creates garbage files. Also check if automatic media downloading is enabled in messengers.
Is it possible to delete the Android folder?
You cannot completely delete the folder Android as it stores the data of all installed applications. Deleting will reset app settings and loss of progress in games. You can only delete the contents of subfolders cache inside it.
How to transfer applications to a memory card on Samsung?
In modern versions of Android, the ability to transfer applications to an SD card is limited by developers. If the "Change" button in the application storage settings is inactive, you cannot transfer it without using special computer utilities such as ADB AppControl.
What to do if the "Clear cache" button is inactive?
This is normal for some system applications. If the button is gray, it means the cache has either already been cleared or the application is not currently using caching. Try clearing the cache through the Recovery menu.
Does full memory affect the speed of the phone?
Yes, critically. When free space is less than 10%, the write speed to flash memory drops, the system begins to slow down, and applications may crash. Always keep at least 2-3 GB free for stable operation.