Modern Xiaomi smartphones, running on the Android operating system with the shell MIUI or the new HyperOS, are characterized by a high degree of process automation. Often the user is faced with a situation when you click on a document, image or video file opens in an inappropriate application that was previously selected randomly or installed by default.
This creates a lot of discomfort, especially if you need to use the specific functionality of another editor or player. Fortunately, the Android architecture allows you to flexibly manage file associations, but in the shells from Xiaomi, this process has its nuances hidden in the depths of the system menus.
In this article, we will discuss in detail how to forcefully change the program to open a specific type of file, how to reset previously established priorities, and what system constraints can prevent this action. MIME-type MIUI Is the key to successfully solving the problem of incorrect launch of content.
Why do files open in the wrong app?
The main reason for the malfunction of the smartphone is the default application mechanism. When you first open a file of a certain type (for example, PDF or MKV), the system suggests choosing a program and often has a checkbox "Always use this application." If the user accidentally confirms this choice, the system remembers the association and no longer asks for preferences.
In addition, some pre-installed Xiaomi apps aggressively capture media file processing rights. For example, a standard video player may attempt to open all video formats, even if they require specific codecs available only in VLC or MX Player.
⚠️ Note: In new versions of HyperOS, file association allocation algorithms have been changed, and resetting settings may require access to an advanced debugging menu.
It is also worth considering that some file formats may not have a registered processor on the system if no compatible applications are installed, in which case the file manager simply will not respond to a click or give an error.
Basic method of changing the application through the “Share” menu
The easiest and safest way to change the file opening program on Xiaomi is to use the system menu of sharing, which does not require deep immersion in settings and works 90% of the time for popular formats.
To start, open a file manager, like standard Explorer or Google Files. Find the file you want that doesn't open correctly. Instead of a single tap, press the file icon for a long time to highlight it, and then click on the menu button or three dots in the corner of the screen.
In the action list that appears, select Send or Share. The system will list all the installed applications that can handle this type of data. Select the desired program from the list. If you want this choice to become permanent, some versions of MIUI allow you to click "Always" right in the selection interface.
- 📂 Find the file in the File Manager and highlight it with a long tap.
- 📤 Click the menu button and select the “Send” or “Share” option».
- 📱 Select the target application from the proposed list of programs.
- ✅ If a request appears, confirm the action as permanent by default.
This method is particularly effective when you need to quickly open a file in an alternate editor without changing the system’s global settings, but if the Always button doesn’t appear, a more radical approach will be needed.
Resetting application settings by default
If a simple choice through the sharing menu does not help and the system continues to impose an unnecessary application, you must forcibly reset its default settings, which will return the system to the point when it has not yet “made a decision” for the user.
Go to Settings for your Xiaomi smartphone. Find the Apps, then select All Apps. In the list, find the app that now automatically opens your files (such as Mi Videos or Google Documents).
Inside the menu of the selected application, scroll down to Open by default. Here you will see the Remove Default Settings or Reset Settings button. Pressing this button will clear all file associations for the given program.
☑️ Algorithm of resetting settings
After this operation is performed, the next time you run a file of the appropriate type, the system will ask you again what to open it, and it is important at this point to carefully read the pop-up and not press the confirmation button blindly without setting the desired flag.
⚠️ Note: Reset default settings for system components, such as MIUI The system or settings may cause the interface to work in an unstable way.
Use of Advanced File Managers
Xiaomi’s standard tools are sometimes limited in functionality. To fully control file associations, experts recommend using third-party file managers such as FX File Explorer, Solid Explorer or MT Manager. These applications have their own MIME-type processing mechanisms.
In advanced managers, you can manually assign an action for each file extension, for example, you can set a rule that all files with the.epub extension always open through ReadEra, ignoring system preferences.
To set up, go to the file manager settings, look for File Types or Associations, and you create a rule that prioritizes Android system settings.
| Annex | Difficulty setting up | Possibility of manual assignment | Support for plugins |
|---|---|---|---|
| MIUI conductor | Low. | No. | No. |
| Google Files | Low. | Partial | No. |
| Solid Explorer | Medium | Yes. | Yes. |
| MT Manager | Tall. | Complete. | Yes. |
Using such tools gives the user administrative control over the file system, allowing you to bypass the restrictions imposed by the manufacturer’s shell.
Work with MIME-type ADB (advanced)
For users who are not afraid of the command line, the most powerful method of managing associations is the use of the Android Debug Bridge (ADB) debugging bridge, which allows you to edit system preferences directly, bypassing the graphical interface.
First, activate the developer mode. Go to Settings → About Phone and press the MIUI build number 7 times. Then, in advanced settings, turn on USB debugging.
Connect your smartphone to your computer and execute a command to view current preferences:
adb shell pm get-preferred-appsTo reset all preferences for a particular package, use the command:
adb shell pm clear-package-preferred-apps com.android.package.nameWhere can I find the name of the package?
This method ensures that even those settings that have been hidden or protected in the GUI are cleaned, but be very careful: the mistaken removal of system preferences can lead to the phone no longer knowing what to open the basic formats.
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Before using ADB commands, be sure to make a full backup of the data, as interference with the system preference tables carries risks.
Frequent problems and their solutions
Even after completing all the steps, users may find that the file is not opened or the selection is not saved, often because the processing app has been removed or updated and its digital certificate has changed, which Android regards as a new program.
In some cases, the problem lies in the file itself: If the file header is corrupted or the extension does not match the content (for example, the video is renamed.txt), the system will look for the application for the text file, not for the video.
It's also worth checking the application permissions. If you want a new player to open files, it must have permissions to access the storage. Check this in Settings → Applications → Permissions.
- 🔍 Make sure the file extension matches its real format.
- 🔄 Try reinstalling the application that should open the file.
- 🛡 Check for permissions to access memory from the target application.
- 📉 Clear the file manager cache if the selection list is not updated.
⚠️ Note: On devices with a locked bootloader or custom firmware, some system associations may be rigidly spelled out in build.prop and require root rights to change.
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If standard methods don’t work, the problem is not the selection settings, but the file itself or the lack of codecs in the system.