Smartphone Xiaomi Redmi 4X deservedly considered one of the most reliable devices of its time, but even such a proven device eventually begins to experience a lack of free space. Owners often face a situation when the system warns about the overflow of internal memory, which leads to a slowdown in the interface and the inability to install new updates.
The main reason lies in the accumulation of temporary files, app cache and multimedia content from messengers. Android operating system in conjunction with the MIUI shell have their own features of data storage, which are not always obvious to the average user, which requires a deeper approach to device maintenance.
In this article, we will take a closer look at all available storage optimization methods, from standard tools to advanced partition cleaning techniques, and learn how to safely delete excess data without risking losing important information or disrupting the stability of your smartphone.
Occupied Space Analysis and System Tools
Before you start deleting files, you need to clearly understand what takes up precious gigabytes. The built-in storage analyzer in MIUI provides quite detailed information, but often hides some system folders from the user's eyes. First, you should go to the Settings → Memory menu, where you visualize the distribution of space between applications, images and system files.
It is worth noting that the standard report may not be entirely accurate, as some folders with messenger data can be counted in the “Other” section. System analyzer often offers quick cleaning, but it only affects the surface layer of debris. For a deeper diagnosis, it is recommended to use the built-in “Security” application, which is the central resource management node in Xiaomi smartphones.
It's important to distinguish between "app-occupied" and "app-data-occupied." One is the size of the installation file, and the other is your personal content, cache, and databases inside the program, and it's the data that tends to grow to giant sizes, especially with social media and navigators.
- 📊 Open the "Memory" section in the settings for a general assessment of the situation.
- 🧹 Use the "Clean" button in the "Security" app to quickly delete temporary files.
- 📂 Manually check the "Documents" section for forgotten downloads.
- 📱 Pay attention to the amount of data occupied by messengers.
Special attention should be paid to the “Other” section, which is often confusing for users, which can hide the remnants of deleted programs, error logs and temporary update files. Files with the extension.tmp and folders called “backup” at the root of internal memory often weigh several gigabytes and can be safely deleted.
Cleaning the cache and application data
The most effective way to free up space is to work with the cache of individual applications. Cache is temporary data that speeds up the launch of programs, but over time can take up more than the size of the application itself. To access this data, go to Settings → Applications → All applications and select the desired program.
Inside the app menu, you'll see two buttons: Clear cache and Clear data. The first operation is secure and only deletes temporary files, while the second will reset the program to the state immediately after installation, removing logins, settings and local databases. Clearing the data requires re-authorization, so use this feature with caution.
☑️ Checking heavy applications
⚠️ Warning: Cleaning up data in banking applications or instant messengers without prior backup can lead to complete loss of correspondence and saved passwords.
The leaders in memory consumption are traditionally Telegram, Viber and YouTube. Telegram, for example, can clean the cache directly inside the settings of the application by selecting "Data and memory", there is a useful feature for automatic cache cleaning, which must be activated by setting a time limit for storing media files.
Remember that once the cache is cleared, the application may be a little slower on its first run, as it will have to re-load the necessary resources from the network, which is normal system behavior that quickly normalizes.
Working with multimedia and download folder
The Download folder, or Downloads, is a black hole where all files downloaded from a browser or received via Bluetooth are flocking. APK, PDF-For documents and pictures that have been dead for years, use a file manager like Xiaomi’s standard Explorer or the more advanced Total Commander to clean up.
Inside the file manager, you should look at the DCIM (camera photos and videos) and MIUI/Gallery/cloud folders. Often they duplicate deleted images or store high-resolution videos that can be transferred to a computer or cloud storage. Duplicate files is another common problem, especially after data copying failures.
How to find hidden large files?
It's also worth checking the Android/media and Android/obb folder. The first one can store cached tracks from streaming services, and the second one can store data from heavy games. If you delete a game but the folder with its name remains in the obb section, you can safely delete it manually.
- 🗑️ Remove old installation files APK from the Download folder.
- 📸 Review the video in the gallery and remove the unsuccessful footage.
- 📁 Check the messenger folders for automatically saved images.
- 🔄 Use cloud services to archive old photos.
Use of the SD-memory-extension
Redmi 4X supports microSD card installation, which is a lifeline for a 16 or 32GB version of internal storage. However, just inserting a card is not enough, you need to configure the system correctly. In newer versions of MIUI, the functionality is limited, but transferring media files and some applications is possible.
To transfer photos and videos, open the Camera app, go to settings and select Save to SD-This will prevent the internal memory from being filled with new images. Use the file manager to transfer existing files: highlight folders DCIM, Pictures, Music and Move It to an External Drive.
| Type of data | Recommended storage location | Impact on speed |
|---|---|---|
| Photos and videos | SD-map | Minimum |
| Music and Books | SD-map | Absent. |
| Annexes | Internal memory. | High (on SD it works slower) |
| System cache | Internal memory. | Critical |
💡
Use it. SD-speed-up UHS-I (U1 or U3). Cheap low-end cards can cause lags when recording videos or running apps installed on them.
Some applications allow you to specify the path of data storage in your internal settings, for example, in navigators or music players you can SD-The map is the primary storage for offline maps and tracks, and it's a significant drain on the system partition.
Removal of system debris and residual files
Even after a standard cleaning, the system still has so-called "tails" - remote application folders, debugging logs and temporary update files. You can use specialized utilities such as Clean Master or SD Maid to combat them, but with great care. The standard "Security" tool in MIUI is usually enough for basic maintenance.
The Security app has a Deep Clean feature that scans the system for large unused files and uninstall process residues, and run this routine regularly, but read carefully what the system suggests to remove so that you don't accidentally erase the documents you need.
⚠️ Note: Do not delete files with names that contain Android","MIUI","System" or "Data" if you are not 100% sure of their origin, this can cause the phone to malfunction.
It's also worth checking the folder. MIUI/debug_log. If the phone is debugging or crashing, it could accumulate error reports that take hundreds of megabytes.
💡
Regular cleaning of system debris (once every 1-2 weeks) prevents critical filling of /data partition and prolongs the life of flash memory.
Radical measures: Resetting to factory settings
If none of the above methods helped free up enough space, or if the memory fills up on its own immediately after cleaning, there may be errors or malware in the file system.
Before starting the procedure, be sure to back up all important data, as in the process all information from the phone, including contacts, messages and files, will be deleted. Go to Settings → Advanced Settings → Restore and Reset → Reset.
Once reset, the phone will go back to the “out of the box” state, and it is recommended that you do not restore the applications immediately, but install them again from Google Play, so as not to return old garbage with them, which ensures the cleanliness of the system and maximum performance.
- 🔄 Make a full backup on your PC or to the cloud.
- 🔋 Charge the battery to at least 60% before resetting.
- ⚙️ Reset via the settings menu or recovery mode.
- 📲 Set your phone up as new by installing only the right one.