Xiaomi Data Files: What It Is, Can You Delete and How to Clean Up

Xiaomi and Redmi smartphone owners often face a cryptic message of memory shortage when the system suggests clearing “other” or “data files.” The user sees that the internal storage is crowded, but a detailed analysis of the folders reveals that the lion’s share is occupied by obscure structures that can not be simply erased through a standard conductor.

In fact, the term data files covers a huge range of information, from application logs to stored progress in games and messenger databases. Android, which runs the MIUI or HyperOS shell, has a strict hierarchy of access. Attempting to rudely interfere with system partitions without understanding their purpose can lead to unstable device operation or complete loss of personal data.

In this article, we will look in detail at where this data is stored, how cache differs from user files, and what cleaning methods are safe. You will learn how to properly use Xiaomi’s built-in tools and third-party utilities to free up space without compromising the integrity of the operating system.

⚠️ Before any manipulation of system files or cleaning of memory partitions, be sure to create a full backup of important contacts, photos and documents in the cloud or on external media.

Android internal memory structure and Data folder

To see if you can delete data files, you first have to look under the hood of the file system. In Xiaomi smartphones, as in other Android devices, internal memory is divided into several logical sections. We are interested in the /data section, which is designed to store user information and data from installed applications, and this is where your photos, downloads, program settings and their cache are located.

There are many subfolders inside the /data directory, each of which performs a different function. For example, the /data/data folder contains application databases, settings, and authorization tokens. If you delete the contents of this folder for a particular application, it will “forget” your username, password, and progress by returning to the state immediately after installation, and the system folders in this section are critical to the operating system itself.

The MIUI shell user interface often hides the real structure of files by showing only aggregated values in memory settings. When the system writes "Other" or "System Files," it sums up spaces with service processes that are not classified as photos, videos or music. Understanding this structure helps avoid errors in manual cleaning.

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Use Xiaomi’s built-in Security app for initial memory analysis – it automatically detects temporary files that are safe to delete without touching important system data.

What is stored in the application data folder

The bulk of the "data files" that take up space on your Xiaomi are generated by installed apps. These are not just APK installation packages, but dynamically generated information as you use it. Social networks like Telegram or WhatsApp store all the media files received here unless you set up auto-save to the gallery. Browsers store a cache of pages to load sites faster when you revisit.

Today’s mobile games can take up several gigabytes of space in a data partition, loading textures, sounds and levels after initial installation. Deleting these files through a file manager without using the “Delete App” feature will result in the game having to be downloaded again, since the start OBB file is often located separately.

Also, the data folders store logs that are generated by the system and debugging applications, which usually take up a little space, but when software malfunctions can grow to hundreds of megabytes, and cleaning the logs is safe and even useful if the phone is slow because of overflowing system logs.

• 📱 App cache: Temporary files for fast download that can be deleted without harming your account data.
• 💾 Databases: Store correspondence history, contacts and settings, deletion will lead to loss of information.
• 🎮 Game resources: heavy graphics and sounds files that take up to 70% of the space in games.
• 📝 Logs and reports: service technical information about the operation of the system, safe for removal.

Can system data files be deleted?

The question of “can I delete” requires a clear separation between user and system files. If you get root rights and access the /data root directory, you will see many folders with system process names. Deleting files from system folders such as com.android.systemui or com.miui.home will lead to a cyclical phone reboot or desktop loss.

However, there are safe areas to clean. For example, the /data/local/tmp folder is often used for temporary files when installing applications or executing scripts. Its contents can be cleaned if you are sure that there is no software update or installation process at the moment. It is also relatively safe to clean dalvik-cache folders (although the system will recreate them the next time it downloads, which will take time).

HyperOS shell and modern versions of MIUI have built-in security mechanisms that prevent users from deleting mission-critical files even with superuser rights without confirmation, but rely on this protection is not worth it. If you don't know the exact purpose of a file with the.db or.xml extension in the system folder, you better leave it alone.

⚠️ Warning: Never delete.apk files from system partitions manually, even if they seem unnecessary.These may be components needed to run basic phone functions, such as calling or texting.

How to Safely Clean Your Memory on Xiaomi

To clean up memory safely on smartphones, Xiaomi doesn’t have to be a programmer or get root rights. There are proven methods that free up gigabytes of space without risking damage to the system. The first and most reliable way is to use a built-in cleaning tool.

Go to the Security app (the shield and lightning icon) that is pre-installed on all the brand devices. Select Cleanup. The system will analyze the memory and suggest removing the debris: cache, residual files and advertising. This method is completely safe, since Xiaomi algorithms know which files can be touched and which ones can not.

To clean it up, you can use the app settings menu. Go to Settings → Apps → All apps. Select a heavy app (like YouTube or Instagram), click Memory and then Clear Cache. This action will delete temporary files but save your logins and settings.

If standard methods aren't enough, you can use the developer mode to analyze memory. Turn on the developer mode (7 times click on the build number in About Phone), then go to Settings → About Phone → Storage. Here you can see a detailed breakdown by category and delete unnecessary large files.

Space analysis through ADB and PC

For advanced users who don’t have much standard tools, there is a powerful tool available. ADB (Android Debug Bridge by connecting Xiaomi smartphone to computer USB and enabling debugging, you can get detailed memory statistics by the adb shell dumpsys meminfo command or analyze the folder size through the adb shell du -sh /data/data/*.

This method allows you to see hidden files that don't show up in a regular file manager. You can pinpoint which application is swelling the most. For example, you might find that some long-forgotten service has accumulated 2GB of logs. Commands are entered in a terminal on a computer.

adb shell pm list packages -f | grep "appendix name"

Using ADB, you can delete the cache of system applications that do not allow you to do this through the interface. the command adb shell pm clear com.android.chrome completely clear the data of the Chrome browser. Be extremely careful when entering packet names: an error in one character can lead to a cleanup of the wrong application or a system error.

Common errors in memory cleaning

Many users, in their quest to make room, make mistakes that eventually slow down the smartphone, the most common being installing dubious Play Market cleaner apps, which often consume a lot of resources, display ads and remove useful cache files, causing the processor to regenerate them, which lands the battery.

Another mistake is manually deleting folders with names like Android or data at the root of internal memory through third-party file managers, which store data from many games and applications in the Android/data folder, deleting them will cause applications to stop running or lose all settings, and you can only restore the folder structure by completely resetting or reinstalling applications.

Also, don't overuse the "Clear All" feature in the vault settings without previewing, sometimes downloaded documents or work files that you forgot to move, always check the contents of Download, Documents and DCIM folders before global cleaning.

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The best cleaning strategy is to regularly remove the cache of heavy applications (social networks, browsers) and transfer photos/video to a cloud server or PC, rather than deleting system files.

Frequently Asked Questions (FAQ)