Xiaomi’s smartphones are famous for their price-performance ratio, but even powerful models are slowing down over time. The main reason for the slowdown and delays in the MIUI or HyperOS interface is often crowded internal storage. When the system partition is critically filled, the Android operating system loses the ability to create temporary files necessary for stable application operation.
Users often notice that the phone starts to hang when switching between tasks or opens the gallery for a long time. This is a direct signal that you need to audit the contents of the device. Xiaomi’s modern shells offer built-in tools for maintenance, but not everyone knows how to use them correctly to achieve maximum effect without harming personal data.
In this article, we will look at all the available cleaning methods, from simple built-in functions to advanced methods of removing system debris, you will learn which files can be deleted safely and which cannot be touched categorically. Proper memory management will prolong the life of your gadget and return it to its former speed.
Analysis of storage occupancy and search for large files
Before you start taking action, you need to understand what is taking up precious gigabytes. There's a built-in analyzer in the MIUI shell that visually displays the space allocation. Go to Settings → Memory to see a detailed employment chart. The system itself ranks the data by categories: apps, images, videos, documents, etc.
Often, it turns out that the lion’s share of space is not taken by system files, but by forgotten downloads or messenger cache. For example, Telegram and WhatsApp tend to accumulate gigabytes of media files even if you have already viewed them. Without manual cleaning or auto-save settings, these applications can take up to 10-15 GB of memory, which is a critical indicator for budget models with 64 GB of total volume.
⚠️ Warning: Before mass deletion of files, be sure to check the Recycle Bin folder in the gallery and file manager.The files there take up space until final deletion, which usually occurs after 30 days.
For more in-depth analysis, third-party utilities like DiskUsage or Files by Google can build a heat map of memory by showing the heaviest directories, which can help you find forgotten archives, old firmware updates, or remnants of remote games that a standard explorer may not display in general categories.
Use of the built-in "Security" application
The easiest and safest way to start cleaning is to use the pre-installed system application Security, which is designed specifically for the Xiaomi ecosystem and knows which files are system debris and which are important data. Launch the application and select Cleanup. The system automatically scans the device for cache, residual files and advertising debris.
After scanning, you'll see a list of recommendations. Here, it's important to be careful: standard cleaning is safe, but clicking on additional categories (like "Big Files" or "Unused Applications") opens up access to deeper cleaning. Cleaning the app cache is one of the most effective procedures that doesn't delete your logins and passwords, but frees up space from temporary data.
☑️ Quick cleaning plan
The app also has a Deep Clean feature that suggests removing similar photos, screenshots and old backups. Use this mode carefully, as the algorithm may suggest removing duplicates of important documents if their names or contents are slightly different. Always double-check the selection before confirming the action.
Clearing the cache and data messengers
Messengers are the main memory eaters on any Android smartphone. Unlike iOS, where the system tightens control over the size of the cache, Android applications can grow to giant sizes. To clean Telegram, go to Settings → Data and memory → Memory Use and click “Clear Cache.” This action will not delete your correspondence, photos and videos will disappear only from the device, but will remain on the server and reboot if necessary.
WhatsApp is more complicated because the story is stored locally, you go to Settings → Data and Storage → Storage Management. You'll see a chat list sorted by volume, and often it turns out that workgroups or family chats are filled with thousands of unnecessary postcards and videos that take up space for months.
- 🗑️ Remove media files from chats that are no longer relevant through the messenger’s built-in file manager.
- 📹 Turn off auto-save photos and videos in the gallery for all groups so that media is not duplicated.
- 🔄 Check the Status folder regularly, where you save your browsing contact history.
For other social networks, such as VK Or Instagram, the best solution is to reinstall the app periodically or use their "Lite" versions, if available. Browser cache, especially Chrome and Yandex, can also take hundreds of megabytes. → Application management.
Removing duplicates and unnecessary media files
Over the years, the gallery has accumulated a huge number of similar photos, serial shots and screenshots. Xiaomi's built-in file manager can find similar images, but for more careful work, it is better to use specialized algorithms. Duplicates often occur when the same files from messengers are re-downloaded or synchronization fails.
Special attention should be paid to the DCIM and Pictures folders. There are often thumbnails that can weigh more than the originals if the gallery cache is damaged. Also check the Download folder, which often downloads APK installation files that have been installed long ago, or documents that are no longer needed.
Don't forget music and podcasts. Offline playlists in streaming services (Yandex.Music, Spotify) take up space on the internal drive. If you stop listening to certain albums, remove them from downloads. High-resolution (4K) videos can instantly burn memory, so it's better to transfer them to your computer or the cloud right away.
System table: what can and can not be removed
When manually cleaning through the file manager, it is easy to get confused in the system folders. To avoid errors that can lead to unstable MIUI operation, use this table as a reference.
| Folder/File | Description | Action. |
|---|---|---|
| MIUI/debug_log | Logs of system debugging | Can be removed |
| Android/data | Application data (cache, game levels) | Careful (will reset progress) |
| Download | Browser download folder | Safe (by checking files) |
| System | OS system files | NOW |
| Tencent/MicroMsg | Garbage from WeChat and analogues | You can clean inside the application |
Deleting files from the Android/obb folder will cause games to stop running and require re-uploading. The System folder contains critical components, and interfering with it without root rights and understanding the consequences can brick the device. Always proceed from the principle: don't know what it is - don't touch it.
⚠️ Warning: Never delete.apk files from system folders unless you are 100% sure it is an unneeded application installer.
Memory Map and Cloud Storage as a Solution
If your internal memory is full and you don't have to delete anything else, you should consider extending it. Many of Xiaomi's models support microSD cards. Transferring photos, videos and music to an external map is a great solution. In the camera settings, you can immediately set the saving of new images on the computer. SD-card that automatically unloads the main drive.
However, modern memory cards are slower than the built-in flash memory. UFS. Installing applications on a map can make them slow, so the map is better used solely as media storage. Use the file manager to transfer data: select files, select Move, and specify the path to the map. SD-map.
Why can’t you just remove system applications?
Cloud services like Google Photos, Yandex.Disk or Mi Cloud free up space by uploading original photos to the Internet and leaving only compressed copies on your phone. Google Photos' "Free up space" feature does this automatically. It's ideal for those who are afraid of losing important moments of life when their phone breaks.
Radical Methods: Resetting and Formatting
When software cleaning doesn’t help and the phone continues to slow down even after removing all the extra files, the final argument is a complete factory reset: This action will return the phone to a store-like state by removing absolutely all user data, accounts and applications.
To perform the reset, go to Settings → About Phone → Settings Reset. Select “Erase All Data.” The process will take a few minutes, after which the phone will restart and require initial setup, and this is the most effective way to get rid of deep system debris that standard cleaners don’t see.
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Before resetting the settings, remove SIM-card and memory card so you don't accidentally format them with your phone, and make sure you have a battery charge of at least 50%.
There is also a softer method of creating a new user, and in some versions of Android, you can create a guest profile or a second account, transfer data to it, and use a clean phone, ignoring the old cluttered profile, but it is a temporary solution and requires getting used to a new environment.
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Regular prophylaxis (once a month) takes 5 minutes, but eliminates the need to do a complete system reset once a year.
Prevention of memory overflow
To keep the problem from coming back, change your smartphone usage habits. Set a rule: check the Downloads folder once a week and delete temporary files from there. Turn off autoloading social media videos in traffic saving settings, which will save not only memory, but also battery power.
Use cloud-based versions of apps where possible, for example, instead of a heavy app, you can use the store’s web version in your browser if you rarely shop. Keep an eye out for MIUI updates, as Xiaomi’s engineers are constantly optimizing file system performance and data compression algorithms.
- 📅 Set a calendar reminder on the first day of each month to perform a memory audit.
- 🚫 Turn off preloading content in news apps and feeds.
- ☁️ Set up automatic sync with the cloud with the option to “delete after download».
Remember, not only is space necessary to store new files, but TRIM, which optimizes the speed of writing to flash memory. If the memory is filled, the speed of the entire phone drops, and the wear of the drive increases. Maintaining 15-20% of free space is the key to a long and fast life for your Xiaomi.