Smartphone owners Xiaomi i Redmi often face a paradoxical situation: the built-in memory analyzer shows that the storage is full under the beginning, but when manually viewing folders through a standard explorer, the user cannot find files that take up gigabytes of space. This phenomenon is caused by the presence of hidden system objects, a cache of remote applications and service databases, which are not displayed in the interface by default MIUI or HyperOS. Ignoring this problem leads to a critical slowdown of the device and the inability to install new updates.
The cleaning process requires caution, since deleting important system configs can lead to a malfunction of individual operating system modules. Android. However, proper management of hidden junk allows you to return your smartphone to its previous performance without the need to perform a full reset. In this article, we will examine in detail the mechanisms for hiding files, tools for detecting them, and safe methods for eliminating digital trash.
Before taking radical measures, it is necessary to understand the nature of the occurrence of such data. Most often, these are leftovers from unsuccessful updates, error logs, or media files from messengers that were deleted from the chat, but remained in deep memory directories. The correct approach to memory cleaning starts with diagnostics, and not with chaotic deletion of everything.
The nature of hidden files in the MIUI ecosystem
Hidden files in the environment Android are not necessarily virus software or malicious scripts. In most cases, these are legitimate objects that the system or applications have decided to hide from the user's eyes to maintain order in the interface. Files whose names begin with a dot (for example, .thumbnails or .nomedia) are interpreted by the file manager as invisible. On smartphones Redmi this logic works everywhere.
Particular attention should be paid to the folder .thumbnails. This is a cache of thumbnails of your photos and videos. When you open a gallery, the system generates thumbnail images for quick preview. Over time, this folder can grow to several gigabytes, especially if you actively shoot high-definition videos. Deleting this data is safe, but the next time you open the gallery, the system will spend CPU resources on re-generating it.
Another source of “invisible” garbage is folders Android/data and Android/obb. Starting from version Android 11, access to these directories for third-party file managers was significantly limited by the security policy Scoped Storage. Game cache files, offline navigator maps, and temporary social network data are stored here. Even after deleting an application, these folders often remain untouched, continuing to take up space.
⚠️ Attention: Files with the extension.dbor.sqlitein hidden folders are often application databases. Deleting them can lead to the loss of correspondence history, app settings or progress in games without the possibility of recovery.
Why do files become hidden?
Developers hide files for two reasons: technical necessity (so that the media scanner does not index service data as music or photos) and protection from the user accidentally deleting critical system settings.
Enabling display hidden objects in Explorer
The first step to cleaning is to visualize the problem. The standard Explorer tool from Xiaomi has a built-in feature to show hidden files, but it is disabled by default. Activating this option allows you to see the real amount of space occupied and identify specific violating directories.
To enable visibility mode, you need to go to the settings of the Explorer application itself. The interface may differ slightly depending on the shell version MIUI, but the logic remains the same. After activating the switch, you will see translucent icons of folders and files that were previously unavailable for viewing.
It is important to distinguish between system hidden files and those that you hid yourself using the “Hide Files” function in the gallery or explorer. The former require careful handling, while the latter are stored in a special secure folder MIUI/Gallery/cloud/.secretAlbum (the path may vary) and are protected with a password or fingerprint. Deleting the latest ones irreversibly erases your personal photos without the possibility of recovery through the trash.
- 📂 Open the Explorer application on the main screen.
- ⚙️ Click on the menu icon (three stripes) in the upper corner and select “Settings”.
- 👁️ Find the switch “Show hidden files” and activate it.
- 🔍 Return to the root of the internal drive and estimate the size of previously invisible folders.
After enabling this function, you will be able to see the folder .MIUIwhere logs and error reports are often accumulated. The folder .WellTech or similar ones created by the pre-installed software will also become visible. Now that the “invisible” has become clear, you can proceed to the actual cleaning.
Use sorting by size in Explorer after enabling hidden files. This will allow you to instantly find the largest directories, which are often hidden from standard analysis.
Manual cleaning through a file manager
The most effective method of freeing up space is manual deletion of specific folders. Automatic cleaners are often afraid to touch deep system directories for fear of disrupting the operation of the smartphone. The manual method gives full control, but requires an understanding of the file system structure Android.
Start by clearing the thumbnail cache. Find the folder DCIM, inside it you will find a hidden directory .thumbnails. When you go inside, you will most likely see files with unclear names that take up a lot of space. They can be safely removed entirely. The system will create this folder again automatically, but it will be empty and will take up minimal space until the next launch of the gallery.
Next, pay attention to the folder Android/data. Data of installed applications is stored here. If you deleted a heavy game, but the space was not freed up, check if the folder with the name of the package of this game (for example, com.pubg.krmobile) is still in this directory. Residual files can weigh several gigabytes. A similar situation is observed with the folder Android/obbwhere cache files of game resources are stored.
| Folder name | What's inside | Can I delete | Consequences |
|---|---|---|---|
.thumbnails |
Photo and video thumbnails | Yes | Gallery will open slower on first launch |
Android/data/[app_name]/cache |
Application cache | Yes | Applications load data again on startup |
.nomedia |
Service file flag | No | Media files in the folder will begin to be displayed in the gallery |
.Trash or .TrashBin |
File basket | Yes | Permanently deleting files from the Recycle Bin |
When deleting files from a folder Download or Bluetooth also check for hidden subfolders. Sometimes messengers create hidden copies of downloaded media files for quick access, which duplicate the main images and take up double the amount of memory.
☑️ Safe manual cleaning
Using the built-in Cleanup application
The shell MIUI has a powerful system application “Cleaner” preinstalled, which has access to memory areas that are closed to third-party apps. This tool can find so-called “residual files” - traces of deleted applications that are often hidden from the user.
Launch the application and click the “Clean” button. After the initial scan, the system will offer to remove garbage. However, for a deep clean, you need to scroll down to the Deep Clean or Storage Analysis section. Here, artificial intelligence algorithms Xiaomi analyze the file structure and suggest deleting large files, duplicates and hidden caches.
The “Applications” section is of particular interest. Here you can see not only the size of the application itself, but also the amount of data it stores. Often it is the data (cache, databases) that takes up more space than the installation file APK. By clicking on a specific application, you can clear only its cache without deleting logins and passwords, which is a safe procedure for freeing up space.
⚠️ Warning: The Deep Clean function may prompt you to delete files that you downloaded a long time ago and forgot about them (for example, APK installation packages or old documents). Always check the list of files before confirming the deletion to avoid losing important information.
Regular use of the built-in cleaner helps keep the system in good shape. In the application settings, you can enable automatic clearing of the cache when a certain threshold of memory fullness is reached, which will eliminate the need to do it manually.
The built-in "Cleaning" application has system process privileges, so it sees and removes hidden garbage more effectively than third-party apps from the Play Market.
Advanced cleaning via computer and ADB
If the built-in tools of the smartphone cannot cope or access to certain folders is blocked by the security system, connecting to a computer comes to the rescue. A USB connection in file transfer mode (MTP) sometimes allows you to see hidden directories that are not displayed on the phone screen, although modern versions Android limit this access.
For full access to the file system, use the tool ADB (Android Debug Bridge). This is a console utility from Google that allows you to control your smartphone from a PC at a deep level. To work, you need to enable “USB Debugging” in the “For Developers” menu on your Redmi.
After connecting and configuring ADB, you can run a command to delete specific hidden folders that are not deleted through the interface. For example, the command to force clear the thumbnail cache is as follows:
adb shell rm -rf /sdcard/DCIM/.thumbnails/*This method requires high concentration and understanding of the command line. An error in the command syntax may result in the wrong files being deleted. Therefore, use this method only if you are confident in your actions and have made a backup copy of important data.
Third-party file managers and their capabilities
Standard Explorer Xiaomi is functional, but third-party solutions often offer more flexible tools for working with hidden files. Applications like Total Commander, Solid Explorer or FX File Explorer have special plugins or settings for displaying system files and accessing the root structure (if you have root access).
Without obtaining superuser rights (Root), even advanced managers will be limited by the policy security Android. However, they can better analyze duplicate files and find hidden media in messenger folders (WhatsApp, Telegram, Viber), which often have a complex nesting structure.
For example, in Telegram the cache is stored in the folder Android/data/org.telegram.messenger/files, but older versions of the application could create duplicates in other places. Third-party disk analyzers, such as DiskUsage or Storage Analyzer, visualize memory in the form of a map of blocks, where you can immediately see which hidden file takes up the largest area, even if it has a long and unclear name.
- 🚀 Total Commander: a classic two-panel manager with support for plugins.
- 🎨 Solid Explorer: modern interface and convenient work with archives and hidden files.
- 📊 DiskUsage: better visualization of occupied space for searching for “heavy” hidden objects.
When using third-party software, remember that granting permissions to access all files gives the application complete control over your information. Download such utilities only from the official store Google Playto avoid installing malware disguised as a useful tool.
⚠️ Attention: Application interfaces and paths to system folders may change with updates to the Android version and MIUI shell. Always check the current paths in the official documentation or on developer forums if standard methods no longer work.
Preventing the accumulation of hidden garbage
The best way to deal with a problem is to prevent its occurrence. Regular hygiene of the digital space of your smartphone Redmi should become a habit. Setting up automatic cleaning in messengers is the first step towards order. You can set a cache storage time limit (for example, 3 days or 1 week), after which the media files will be deleted automatically. Telegram And WhatsApp You can set a cache storage time limit (for example, 3 days or 1 week), after which media files will be deleted automatically.
It is also recommended to disable the automatic saving of statuses and stories from social networks if you do not plan to review them. These files are often stored in hidden folders and quietly eat up gigabytes. Periodically checking the folder Download and deleting old installation files APK also significantly saves space.
Don't forget about cloud services. Setting up photo synchronization Google Photos with the “Free up space” function allows you to store the originals in the cloud, and leave only compressed copies on the device or delete them altogether, while maintaining access via the Internet. This dramatically reduces the load on internal memory and reduces the size of the thumbnail cache.
How does the “Free up space” function work?
After uploading a photo to the cloud, the application prompts you to delete local copies. Hidden thumbnails are also cleared, since they are linked to local files. When viewing photos from the cloud, the cache is created anew, but it is much smaller in size.
Frequently asked questions (FAQ)
Is it safe to delete the .nomedia file?
The file .nomedia by itself weighs 0 bytes and serves just a flag for the system. Deleting it will not free up space, but will force the gallery to index all media files in this folder, which can lead to the appearance of service pictures in the general photo feed. You should delete it only if you want hidden files to become visible in the gallery.
Why is the space not freed up after deleting the files?
Perhaps the files were moved to the trash of the explorer or gallery itself. Check the Trash folder in the Files app and empty it. Indexing may also fail: try restarting your smartphone so that the system recalculates the amount of free space.
Is it possible to delete the Android folder completely?
Absolutely not. Deleting the entire folder Android will lead to the inoperability of most installed applications, data loss and system malfunctions. You can only delete the contents of subfolders of specific deleted applications inside data i obb.
How to hide files back after cleaning?
To hide files, rename the folder by adding a dot at the beginning of its name (for example, MyFiles turns into .MyFiles). Or use the built-in “Hide Files” function in the Explorer menu Xiaomiwhich will move them to a protected album.
Does clearing hidden files affect the warranty?
No, deleting user files, cache and residual data through the file manager or standard settings does not interfere with the hardware part or flashing the device. The guarantee remains in full.