Owners of Xiaomi, Redmi and Poco smartphones sooner or later face unpleasant notification of a lack of free space. The system starts to work slower, cameras refuse to shoot new videos, and messengers stop downloading media files. The natural question arises: where exactly does free space go and what takes up memory on Xiaomi most? The answer lies not only in your personal photos, but also in the complex structure of system files that accumulate during the operation of the device.
Understanding how MIUI or HyperOS manages data is key to efficient storage management. Unlike pure Android, Xiaomi’s shell has many background processes and services that create its own temporary files. In this article, we’ll take a closer look at your smartphone’s memory structure, learn how to distinguish important system data from digital junk, and look at secure methods for freeing gigabytes.
Storage occupancy analysis is not just about removing redundant applications; it's a comprehensive approach that requires attention to hidden folders, social media cache, and residual files after remote programs. Up to 40 percent of the space on crowded smartphones often comes from messenger cache and system logs that can be safely deleted. Let's figure out how to find these files and whether to trust built-in cleanups.
Memory Anatomy: How MIUI Sees Files
Before you start cleaning, you need to understand how the operating system classifies data. → The memory, you see the big picture, divided into big categories, but the actual structure of the file system is much more complex and includes partitions that the user doesn't normally see. The system divides the space into a system partition, a user data partition, and, in some cases, a reserved area for updates.
System files are the foundation of your Xiaomi. They include not only the operating system itself, but also preinstalled applications, fonts, hardware drivers and libraries for the interface to work. Deleting or damaging these files can lead to a bootloop (cyclical reboot) or complete device failure. So when analyzing what takes up space, it is important not to touch the System section unless you are a seasoned user with super-user rights.
⚠️ Warning: Never attempt to manually delete files from root system folders through root file managers unless you know exactly what they are intended.
User data is the space you freely dispose of, which includes photos, downloads, apps you install and their data, and it is in this segment that most often accumulates digital fat. Apps often create backups, temporary files and error logs that lie dead weight for years. Understanding the difference between the system partition and the user partition is the first step to competent optimization.
💡
The system partition is protected from the user for a reason: its overflow often indicates errors in the operation of the OS itself, not your actions.
System Files and the “Other” Section
One of the most mysterious categories in Xiaomi’s storage is the “Other” section (or “System Data” depending on the firmware version), which users often wonder why this partition can inflate to 10-20 gigabytes. In fact, it stores the system cache, temporary update files, data from the Google Assistant and Xiao AI voice assistant, as well as logs of various services.
Often, Other hides remnants of deleted applications or fragments of large updates that the system did not delete automatically. For example, after updating MIUI, old installation packages can remain in memory. Also, streaming services data comes here if they cache video for faster playback. Cleaning this section requires caution, since aggressive removal can lead to resetting some system settings.
It's not enough to analyze the contents of this section with standard smartphone tools. It's recommended that you use the built-in Security app or third-party disk space analyzers like DiskUsage or Files by Google. They let you visually see which folders have grown the most. If you see that the folder with the logs takes several gigabytes, this is a clear sign of a malfunction of some application that constantly records error reports.
Why does the “Other” section not decrease immediately after cleaning?
App cache: Hidden gigabyte eater
The biggest memory consumers on any modern smartphone, including Xiaomi, are social networks and instant messengers. Telegram, WhatsApp, Viber, TikTok and Instagram do not just store correspondence, they store every photo, video and voice message viewed in a local cache. Over time, this cache can reach a whopping size, occupying 5, 10 and even 20 gigabytes on a single application.
The problem is that standard cache clearing through Android settings often only deletes temporary files, but does not affect media files saved in application folders. For example, in Telegram you need to go to the settings of the application itself ("Data and memory" → "Memory Use") and clear the cache there.
- 📱 Telegram: Stores all viewed media files unless autodelete is enabled.Can take up up to 30% of all phone memory.
- 📸 Instagram/TikTok: Cache previews and short videos for smooth tape. Accumulated trash can weigh several gigabytes.
- 💬 WhatsApp/Viber: Store backups of media files and statuses, which are often duplicated in the gallery and in the application memory.
Regularly checking the list of applications, sorted by place, helps to identify such heavyweights. Go to Settings → Apps → All apps and sort the list by size. You may be surprised to find that an application that you rarely use takes up half of the memory due to accumulated cache.
💡
Enable the Autodelete Media feature in Telegram and WhatsApp settings, or limit the period of media storage in your phone’s memory (for example, 3 days or 1 week) to prevent cache growth in the future.
Photos, videos and duplicates in the Gallery
Media files are something we consciously upload to our phones, but often forget about. Xiaomi cameras are high-resolution, and one minute of 4K video can take up to 400 megabytes. In addition, the gallery often has serial shots, failed shots and screenshots that are no longer needed.
Duplicates are worth special attention. When synchronizing with cloud services or transferring data from another phone, copies of the same files often appear. MIUI has a built-in tool for finding duplicates, but it does not always work perfectly. It is recommended to manually view the “Recently Deleted” folder periodically, since files are stored there for 30 days and continue to occupy space.
It's also worth checking the DCIM →.thumbnails folder. This hidden folder stores thumbnails of all your photos for quick display in the gallery. If you have tens of thousands of photos, this folder can weigh several gigabytes. It can be cleaned, but the next time you open the gallery, the system will recreate the thumbnails, so it's a temporary solution that only makes sense to do if there's an acute shortage of space right now.
Storage Analyzer and Hidden Folders
There may not be enough built-in tools to go deep into what Xiaomi is taking up, and in this case, specialized tools come to the rescue, and one of the most effective is Files by Google or the built-in Explorer with analysis, and they build a visual memory card where the size of the rectangles corresponds to the size of the files.
Using such tools, you can find forgotten files: old navigation maps offline, downloaded series in players, installations. APK-Often users forget that they downloaded a 2GB file a month ago and it just lies in the Download folder. → Data where some applications store their additional data (card cache, game levels, music).
However, with Android → data folder, you need to be careful. Starting with Android 11 and up, access to this folder is limited for security reasons. Direct deletion of files from here can lead to loss of progress in games or app settings. It is better to delete data through the settings of the application itself or using the built-in Cleanup feature in the application card.
☑️ Weekly memory check
Table: Comparison of cleaning methods
Not all memory freeing methods are equally effective and safe. Below is a comparative table of different approaches to cleaning storage on Xiaomi smartphones.
| Cleaning method | Efficiency | Security | Risk of data loss |
|---|---|---|---|
| Built-in cleaning ("Security") | Low/Mediocre | Tall. | Minimum |
| Manual removal of app cache | Tall. | Tall. | Medium (application settings) |
| Delete folder.thumbnails | Medium (temporary) | Tall. | No. |
| Reset to factory settings | Maximum | Medium | Total loss of data |
As you can see from the table, radical measures are the best, but they require a full backup. Regular use of built-in tools and manual cleaning of the cache of heavy applications is the middle ground for maintaining order without stress.
Radical measures: Resetting and formatting
If the memory is occupied by system debris that can not be removed by any means, and the phone is unstable, the last measure remains a complete reset to factory settings.Be sure to back up all important data to your computer or to the Mi Cloud / Google Drive cloud before this procedure.
To perform the reset, go to Settings → About Phone → Settings Reset → Erase all data. This process will delete everything: apps, photos, contacts and system debris. Once turned on, the phone will be like a new one, with a clean file system where fragmentation and data accumulation errors are excluded. This often “revives” old devices, returning them to speed.
⚠️ Warning: Make sure the battery is at least 50-60% Interrupting the formatting process due to battery discharge can damage memory partitions and prevent the phone from turning on.
An alternative to a complete reset might be to format a memory card (if it is used as an internal storage), but this will only affect the data on the memory card. SD-For internal memory, a complete reset is the only way to guarantee that all system tails are deleted».
What if the memory is filled up quickly after reset?
Prevention: How to maintain order
To keep the question “what is taking up memory on Xiaomi” from coming up every two weeks, develop useful habits: first, set up automatic cleaning in the Security app. Second, regularly (once a month) check the list of installed applications and delete those that you do not use. Third, use cloud storage for photos and videos, enabling the “Free space” function, which deletes local copies of files already uploaded to the cloud.
You should also limit the background activity of heavy apps. If you don't use navigation every day, there's no point in keeping maps of cities uploaded in memory. Rethink the video quality settings on YouTube and streaming services - offline viewing in 4K quickly eats up free space.
Compliance with these simple rules will allow your Xiaomi to run fast and stable throughout its life.Memory is a resource that requires management, and now you know where to look for hidden reserves and how to properly manage storage.
💡
The best cleaning is prevention: setting up automatic cache deletion and using the cloud for media files will save you the need to manually clean gigabytes of garbage.