You pick up your smartphone to take an urgent photo or update an application, and suddenly you see a frightening notification: “Memory is full.” You go into your storage settings, expecting to see a mountain of photos or heavy games, but are horrified to discover that the lion's share of the space is taken up by a mysterious category “Other” (sometimes called “System Data” or “Other”). This gray area can eat up from 10 to 50 gigabytes, turning a fast flagship into a slow device that is suffocating from a lack of resources.
The nature of this phenomenon lies in the features of the file system Android, which has been accumulating temporary files, error logs, and caches for decades deleted applications and remnants of updates. Unlike photos or music, this data is not clearly linked to a specific file in the gallery, so a standard file manager often cannot classify it correctly. Understanding what this digital ballast consists of is the first step to restoring freedom to your device without losing important personal data.
In this article we will analyze in detail the anatomy of the “Other” category, identify the main culprits of memory filling and offer a step-by-step algorithm for safe cleaning. We will not recommend dubious cleaner apps that often only make the problem worse, but will focus on built-in system tools and proven manual methods that are guaranteed to give you back free space.
Anatomy of the Other category: what is hidden behind the numbers
When the Android system displays the amount of data in the Other section, it is actually admitting that it cannot clearly classify these files into standard categories like “Images”, “Videos” or “Applications”. Most often it accumulates here application cache, which is created to speed up the work of apps, but over time grows to gigantic proportions. For example, streaming services, instant messengers and browsers store terabytes of temporary data, which are not formally part of the application installation file.
A significant part of this volume is occupied by the so-called residual files. When you uninstall a game or utility, the operating system often leaves behind folders containing settings, downloaded levels, or media files. This data is no longer needed, since the application itself has been deleted, but it continues to lie dead weight in the system directories. Also included here are system logs - text reports about the operation of the smartphone, which are useful for developers when debugging, but are absolutely useless for the average user.
⚠️ Attention: Do not try to delete files from system folders manually through third-party file managers with superuser rights (Root), if you are not 100% sure of their destination. Removing critical system libraries can cause the phone to stop booting.
Another hidden space consumer is update files. The system may store old firmware versions or incompletely downloaded update packages that take up space but are not useful. Sometimes files from the folder Android/obb or Android/data, which belong to the game cache, but due to indexing features in new versions of Android may not be displayed correctly.
Why does the system not see these files?
Storage scanning algorithms in Android are focused on media files and installed APK packages. Service files, messenger databases and temporary caches often have specific extensions or are located in protected directories, where a standard scanner simply “does not look” when plotting memory usage.
Messengers and social networks: the main space eaters
If you are an active user Telegram, WhatsApp or Viber, then with a 99% probability they are the source of the memory problem. These applications are designed in such a way that every photo, video, voice message and document sent or received is saved to the internal memory of the device. Over time, the messenger database turns into a gigantic archive, which the system often classifies as “Other” rather than “Images” or “Video.”
Telegram is particularly aggressive in this regard. By default, it is set to automatically download all media from channels and chats. You may not even open some channels, but heavy video files will already be lying in your phone’s memory, waiting in the wings. WhatsApp creates copies of chat databases every night, and if you don't set a limit on the number of backups saved, they can take up several gigabytes.
- 📱 Telegram: Go to Settings → Data and memory → Storage usage. Click Clear Cache. It's safe: your photos and videos will not be deleted from the Telegram cloud, you can download them again if necessary.
- 💬 WhatsApp: Go to Settings → Data and storage → Manage storage. Here you can see the most “heavy” chats and delete media files selectively without losing correspondence.
- 📞 Viber: In the “More” menu → Settings → Memory. Use the built-in function to clear cache and delete downloaded files.
It is important to understand the difference between clearing the cache and clearing the data. Clearing the cache deletes temporary files (picture previews, downloaded stickers), which is safe. Clearing data will delete all your correspondence and account settings within the application, so you should resort to this measure only as a last resort and after creating a full backup.
Enable the “Auto delete media” function in the messenger settings. For example, in Telegram you can configure automatic cache clearing if a file has not been opened for more than 3 days. This will prevent garbage from accumulating in the future.
Browser cache and downloads: invisible ballast
Web browsers such as Google Chrome, Yandex Browser or Samsung Internetwork by storing local copies of the pages you visit. This is necessary so that when you visit the site again, it loads instantly. However, over a year of active surfing, the browser cache can grow to several gigabytes. These files often consist of thousands of small images, scripts and styles, which together take up a colossal amount of space.
In addition to the cache, it is worth checking your downloads folder. Many users download files, view them once and forget to delete them. PDF documents, APK installation files (which often remain after installing applications), archives and pictures from the Internet end up in the folder Download. The system may not consider them a separate category if there are many files and they are heterogeneous, classifying them as “Other.”
To clear the browser, it is not necessary to delete your browsing history if you want to save it. In the privacy settings of most browsers there are checkboxes for selective cleaning. You can only delete “Images and other cached files” while leaving your history and passwords intact. This will free up space, but will not interfere with your comfort of use.
⚠️ Attention: When clearing your browser data, you may be automatically logged out of some sites. Make sure you remember your passwords or have them saved in a Google password manager before clicking the Clear All button.
Also check the offline mode settings on video hosting sites such as YouTube or Netflix. Movies and videos downloaded for offline viewing take up space in the protected memory area and are often displayed in the “Other” category. If you have watched the content, do not forget to delete downloaded files through the app menu.
System files and logs: when the OS itself is to blame
Sometimes the problem lies not in the user’s applications, but in the operating system itself. During operation, Android generates log files (logs) that record events, errors, and the operation of background services. In normal mode, these files should be automatically rotated and deleted, but if there are software failures, they can stop being cleaned and grow exponentially.
Another common reason is unsuccessful system updates. If the phone tried to download an OTA update package (over the air), but the process was interrupted or a verification error occurred, the update file may remain on the system partition. It weighs several gigabytes, is not installed or uninstalled using standard means, simply taking up space as dead weight.
In some cases, the “Other” category is inflated by backup functions. Local backups created by manufacturers' skins (for example, MIUI from Xiaomi or OneUI from Samsung) can be stored in internal storage. If you made a full system backup six months ago and forgot about it, this file can weigh 10-20 GB. Check for files with the extension .bak or in folders MIUI/backup, Samsung/backup.
| File type | Where to look | Can I delete | Risk |
|---|---|---|---|
| Application cache | Settings → Applications | Yes, safe | Low (applications will download data again) |
| System logs | Folders /log, /tombstones | Yes (access to the system is required) | Low (loss of error history for developers) |
| .android_secure files | Internal memory root | No | High (this is encrypted application data on the SD card) |
| Data folder | Android/data | With caution | Medium (resetting game and application settings) |
If you If you suspect a system failure, try a simple but effective method - clearing the cache partition through the Recovery menu. This process does not delete your personal data (photos, contacts), but erases temporary system files that could cause conflict and growth of the “Other” category.
System logs and files of unsuccessful updates are “digital garbage” that is of no benefit to the user. Removing them is safe and often returns 2 to 5 GB of free memory instantly.
Radical methods: resetting and transferring data
If gentle cleaning methods did not help and the “Other” category continues to take up critical space, the phone’s file system may be fragmented or damaged. In this case, the most effective solution is to completely reset the settings to factory settings (Factory Reset). This action will erase absolutely all data from the device, returning it to its “out of the box” state, and is guaranteed to reset the used memory counter.
Before performing a reset, it is critical to create a full backup. Use Google cloud services for contacts and calendar, make copies of photos in Google Photos or on your computer. Do not forget to export important correspondence from instant messengers, since after the reset it will be impossible to restore them without a preliminary backup.
☑️ Preparing for a full reset
The reset process is usually located in the menu Settings → System → Reset settings → Delete all data (factory reset). The path may differ slightly depending on the model (Samsung, Xiaomi, Pixel), but the essence remains the same. After turning on, the phone will be clean and you can configure it again, installing only the necessary applications.
⚠️ Attention: A full reset is irreversible. All files deleted during this process cannot be recovered using standard means. Make sure you save everything important on external storage.
An alternative to a full reset is to transfer media files and documents to a microSD memory card or cloud storage. While this won't directly reduce the Other category itself, it will free up overall space, allowing the system to run more smoothly. Some files from the folder DCIM or Downloads can be safely moved to the card, unloading the internal memory.
Prevention: how to prevent memory from filling up in the future
To prevent the situation with the mysterious “Other” section from happening again in a month, it’s worth introducing a few habits digital hygiene. First, regularly check your autoload settings in instant messengers. Disabling automatic saving of media to the gallery will not only save space, but will also speed up the operation of the application itself.
Secondly, once every couple of months, go to the storage settings and sort applications by size. Delete those that you have not used in the last six months. We often forget about heavy games or utilities that continue to store their data in the background.
Thirdly, use the built-in optimization tools. Modern smartphones have a “Device” or “Device Maintenance” section that automatically finds unused files and offers to delete them. Trust these system tools more than third-party apps from the Play Market, which are often themselves a source of advertising garbage.
Remember that full memory is not just an inconvenience, it is a factor that directly affects the speed of the processor and the durability of the flash memory of the smartphone. The system needs free space for the correct operation of the mechanisms for writing and reading data.
The truth about cleaner applications
Most popular applications like Clean Master work on the principle of “raking out” the cache, which the system immediately creates again. Moreover, they often run in the background, consuming battery and displaying advertisements. Built-in Android tools today are quite enough to maintain cleanliness.
Frequently asked questions (FAQ)
Is it possible to delete the Android folder completely?
No, you cannot delete the entire folder Android as it stores the data of all installed applications. However, you can safely clear the contents of the folders Android/cache (cache) and Android/obb (if you deleted the corresponding games). Android/data It is better not to touch the folder unless absolutely necessary, this will reset application settings.
Why is the space not freed up after clearing the cache?
Perhaps you cleared the cache of only one application, but the problem is in another. It is also worth rebooting the phone after cleaning so that the system recalculates the amount of occupied space. Sometimes the memory indicator is updated with a delay.
Does the “Other” category affect the speed of the phone?
Yes, directly. When the internal memory is more than 90% full, the memory controller starts to slow down as it has a harder time finding free blocks to write to. This leads to lags, interface slowdowns and long application opening times.
How to find out which application creates the most garbage?
Go to Settings → Applications and sort the list by size. Note the difference between the size of the application itself and the size of its data/cache. If the cache takes up gigabytes (like TikTok or Telegram), this is the source of the problem.
Is it safe to use developer mode to clean up?
There is an option in the developer menu for "Don't save actions" or manage background processes, but it is not designed to clean up space. It is better not to change these settings without understanding the consequences, as this may disrupt the stability of the system.