What Xiaomi system files can be deleted without harming the system

Owners of MIUI or HyperOS smartphones often face a lack of space in the system partition. Even when buying a device with a large amount of memory, pre-installed services and hidden processes can take up gigabytes, slowing down the gadget. Many users wonder what exactly takes up space and whether it can be eliminated without fatal consequences.

Cleaning system files is a delicate process that requires understanding the architecture of Android. Simple deletion of folders through the file manager is often impossible due to root access restrictions, and the rash erasure of critical components leads to a “bottle” or inoperability of the touch screen. In this article, we will analyze which Xiaomi system files are really garbage and which are necessary for the operation of the firmware.

For secure optimization, it is best to use specialized tools like ADB AppControl or Android Debug Bridge command line, which allow you to remove applications for the current user without directly affecting the system partition. This reduces the risk of failure to a minimum, leaving the possibility of quick recovery. Below is a detailed analysis of the categories of files and services that you can get rid of.

Analysis of system partition and hidden folders

Before you start deleting, you need to understand the structure of the file system. The standard file manager hides most system directories, but when you connect to a PC or use root rights, you can access the root directory. The main focus should be on the /data/data/ and /system/app/ folder, where executable files and cache of preinstalled services are stored.

Many files have cryptic names that don’t make sense to the average user, such as packages with names like com.miui.analytics or com.xiaomi.joyose, which are responsible for collecting statistics and game optimizations, respectively, removing some of them will not affect the basic functionality of the phone, but will free up processor resources and memory.

⚠️ Note: Never delete files from the folder /system/priv-app/ manually without first creating a full backup (TWRP). Error in one byte of system framework code can lead to inability to load the operating system.

To do deep content analysis, we recommend using tools like DiskUsage or built-in storage analyzer, which visualize the space by showing which packets have grown to giant sizes, and often find that the debugging logs and cache of long-distant applications are the lion's share.

Safe to remove system applications

The safest way to free up space is to disable or remove system applications that are not used in everyday life, and Xiaomi’s firmware is full of them, from duplicate browsers to advertising services, removing these components will not disrupt calls, SMS or mobile Internet.

The safe candidates include analytics services that constantly collect data about your activities and send them to the company’s servers, and you can also remove various “assistants”, screensavers and stock applications if you prefer third-party analogues from Google Play, which will significantly reduce the load on RAM.

• 🗑️ com.miui.analytics – the main collection of usage statistics, secure for removal.
• 🗑️ com.xiaomi.joyose – a service for gaming optimization and advertising, often causes heating.
• 🗑️ Mi Account: Mi Account system service, you can delete if you do not use the Mi cloud.
• 🗑️ com.android.printspooler – printing service, only required when connecting printers.

It is important to understand that removing a standard browser or gallery will require installing alternatives, otherwise the system may not know how to open links or images. ADB-The teams we will discuss in the following sections.

Cleaning the cache and temporary files of the system

Temporary files are the garbage that accumulates in the operating system and applications, created to speed up access to data, but over time they can reach several gigabytes. Unlike system files, cleaning the cache is completely secure and does not require complex manipulation of access rights.

Special attention should be paid to the /data/local/tmp/ folder and update cache, sometimes after a failed system update, there are old installation packages left there, and the cache of messengers (Telegram, WhatsApp) that is not formally system-based, but stored in a secure area of user data can also inflate.

You can use Xiaomi’s built-in Security utility to clean automatically, but it often works superficially. Deeper cleaning is possible via Recovery mode or via PC. Regular cleaning of temporary files helps avoid errors when installing new firmware updates.

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Use the Cleanup mode in the Security app once a week, but before deep cleaning the app cache, make sure important data (such as drafts in messengers) is saved.

Working with ADB: Removing packages for advanced

The most effective method of removing system files is the use of debugging by USB tool ADB (Android Debug Bridge This method allows you to remove apps for the current user (--user 0), It actually hides them from the system and stops the processes, but leaves the files on the disk.

To get started, activate the developer mode. Go to Settings → About Phone and quickly press 7 times on the MIUI version. Then, in the “Additional” menu, turn on “Debugging on USB.” Connect your smartphone to your computer and enter the connection check command.

adb devices

Once the debugging is confirmed on the phone screen, you can proceed to delete.

adb shell pm uninstall -k --user 0 name.packet

For example, to remove the analytics service, the command will look like this: adb shell pm uninstall -k --user 0 com.miui.analytics. Be extremely careful when entering the name of the package, as a typo can lead to the removal of the wrong component.

Table of critical and removable components

To help you understand which files you can and cannot touch, a spreadsheet will help you quickly navigate the process list running on your device, and remember that package names may vary slightly depending on the Android version and regional firmware (Global, China, EU).

Use this table as a checklist before you start cleaning. If you're unsure of the purpose of the package, you'd better find a description online or leave it as it is. A 50 megabyte savings isn't worth the risk of turning your smartphone into a brick.

Recovery of Remote System Files

If you delete the extra during the optimization process and the system starts to work incorrectly (the sound is gone, the camera is not working or the settings are crashing), the components can be returned. Since we used the deletion method for the user, the files are physically left in the system partition, just marked as “deleted” for your profile.

The install-existing command is used to restore it, and you need to know the exact name of the deleted package, which is another argument for keeping records of what you have modified.

adb shell cmd package install-existing name.packet

In some cases, especially when removing critical interface components, it may be necessary to reset to factory settings, so a full backup of the data before starting any manipulation of system files is a must.

⚠️ Note: If after deleting files, the phone stopped turning on (hangs on the Mi logo), only flashing through the Mi Flash Tool in Fastboot mode with complete data clearing (Clean All) will help).

Don’t panic if some features disappear after you remove your system apps, and it’s often enough to simply restart your device or restore a standard app package through the Mi Store or Google Play, whichever is removed.