Xiaomi smartphone owners often face a situation where the internal memory of the device is rapidly filled, although the user did not install new applications, the reason for this phenomenon is often hidden system files, cache of remote programs and the remaining data from MIUI updates. These directories are not displayed in the standard file manager mode, which creates the illusion of “losing” gigabytes of free space.
Cleaning up such storage needs caution, as removing critical system components can lead to unstable operation of the Android operating system. In this guide, we will detail the safe methods of accessing hidden memory parts, file display settings and deep storage cleaning algorithms without risking the functionality of your Redmi or Poco.
Reasons for Hidden Files in MIUI System
The MIUI and HyperOS operating shells use background processes to speed up the interface and save user data. Hidden folders often contain temporary files that are created by an application to quickly load content when re-referred. Over time, such cache can reach several gigabytes, taking up valuable space.
Another common reason is the remnants of remote applications. When you uninstall a program through a standard interface, the software developer often leaves its configuration files and error logs in the root directories, and these data are marked as hidden so that the average user does not accidentally delete them while using the phone.
⚠️ Note: Do not delete folders with system process names (e.g. com.android.systemui) unless you are sure of their purpose.
It is also important to consider the working mechanism.OTA-After successful installation of a new firmware version, installation packages can remain in memory in hidden mode. Updates take up the most space and can be safely deleted only after confirming stable operation of the new version of the system.
Configure the display of hidden elements in the conductor
Before you start deleting, you need to visualize hidden objects. The standard MIUI shell Explorer tool has a built-in feature for displaying such files, which is disabled by default. To activate, open the application and go to the settings menu, usually located at the top of the screen or in the sidebar.
You need to find a file visibility item in the settings menu. The interface may vary slightly depending on the Android version, but the logic remains the same. You need to activate the switch next to the corresponding description.
- 📂 Open the "Conductor" application on the main screen.
- ⚙️ Click on the menu icon (three dots or stripes) in the top corner.
- 👁️ Select "Settings" or "Settings".
- ✅ Activate the switchboard to show hidden files".
Once this option is enabled, all previously invisible folders and files will be viewable, with a translucent look of icons, signaling their status, and you can now analyze the contents of memory and identify large objects that are to be removed.
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Use size sorting in Explorer to see the most voluminous hidden folders and files right away.
Using third-party file managers for deep cleaning
Xiaomi’s regular Explorer has basic functionality that may be limited by access rights to some system partitions. For a deeper analysis, it is recommended to use specialized applications such as Total Commander, FX File Explorer or Solid Explorer. These tools allow you to work with the file system at the root-access level (if any) or have extended rights through ADB.
When you install a third-party file manager, Android will ask permission to access the storage, which is standard security procedure, and once you grant permission, you will access the root directory /storage/emulated/0/, where most digital debris accumulates.
The advantage of third-party solutions is that they can rename and delete batches, and they have built-in disk space analyzers that visually show which folders take up the most space using color encoding.
- 📥 Download the verified file manager from Google Play.
- 🔐 Give the application all the requested permissions to access files.
- 🔍 Use the Disk Analysis feature to search for large hidden objects.
- 🗑️ Delete files carefully, checking their path before cleaning.
☑️ Check before deleting files
System folder analysis and secure removal
The most interesting ones for cleaning are folders with names of remote applications, which often remain dead weight. Also worth paying attention to is the MIUI folder at the root of the internal storage, where error logs and crash reports can accumulate.
Pay special attention to the Android folder, which contains data and obb subfolders, app settings are stored in the data, and heavy game files are stored in the obb. Deleting obb content for installed games will make them inoperable, but the remnants of long-deleted games can be cleaned.
| The name of the folder | Description of the contents | Recommendation |
|---|---|---|
| MIUI/debug_log | Logs of system debugging | Safe to remove |
| Android/obb | Remove only the remnants of the deleted games | |
| Temp or Tmp | Temporary files | You can clean it completely. |
| .thumbnails | Image miniatures | Removal will speed up gallery work |
When working with system directories, it is important to understand the difference between user data and OS files..apk files in hidden folders are often installers of updates that have already been applied.
⚠️ Attention: Folder Android/data It contains critical data for the running of installed applications, and clean the contents manually, file by file, understanding the purpose of each application.
What is a folder.Trash or.Trash-1000?
Cleaning the cache through the engineering menu and settings
Not all hidden files can be deleted through Explorer, some of them are locked by the system to protect data integrity, in which case the effective method is to clean through the recovery menu (Recovery Mode) or regular cache cleaners.
To access advanced storage settings, go to Settings → Memory, where the system will prompt you to clear the cache, which is often hidden in hidden partitions, and this is the most secure way to do so without requiring superuser rights.
If the standard cleaning doesn't work, you can use Recovery mode. To do this, turn off your smartphone and press the button combination (usually Volume Up + Power). In the menu that appears, select Wipe Cache. This action is safe for user data, but will delete temporary system files.
- 🔄 Go to Recovery Mode (Recovery Mode).
- 📉 Select the option "Wipe Cache" (not to be confused with Wipe Data!).
- ⏳ Wait for the cleaning process to be completed.
- 🔄 Select "Reboot to System" to reboot.
This method is especially useful after major firmware updates, when the system accumulates a lot of transition files, after this procedure, the phone can run a little slower on the first run, as the system will recreate the necessary caches, but the space will be freed up.
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Cleaning the cache through Recovery Mode is a safe way to remove system debris that is not available through a regular conductor.
Memory Filling Prevention on Xiaomi
To prevent the problem of hidden folders from returning regularly, it is recommended to introduce the habit of periodic revision of the storage. Automate this process with the help of built-in cleaning scripts or third-party utilities such as SD Maid (requires caution).
It is also worth turning off the automatic saving of error reports in the Developer Menu, which are often written in hidden logs and can grow to huge sizes if the system is unstable.
Regularly restarting the device (at least once a week) also helps the system to reset temporary files and clear RAM by preventing the accumulation of “garbage” in hidden cache.