Modern smartphones allow users to fully personalize the look and feel of the interface, and Xiaomi Redmi 9A is no exception. The Themes app offers thousands of design options, but over time many of them are no longer relevant or simply annoying. Deleting unnecessary design files is not only a way to free up precious space in the device’s memory, but also the ability to return the system to its original speed.
Unlike standard applications, MIUI themes take up not only storage space, but can also affect the stability of the GUI. The accumulation of dozens of unused data packets sometimes leads to slow menu opening or visual bugs. Therefore, cleaning the theme library regularly is an important part of serving your Redmi 9A.
The process of deleting may not seem obvious to beginners, as the developers have hidden this feature deep enough in the app menu. In this article, we will discuss in detail all possible ways to get rid of unnecessary design, including cases where standard methods do not work, you will learn how to safely return the standard look of the system and delete any third-party files.
Standard method of removal through the application Topics
The safest and most reliable way to remove a theme is to use the built-in Theme app, which is where all visual content is managed, and you need to start the app and go to the Profile tab, which is usually located at the bottom right of the screen, and it stores the entire history of your downloads and installations.
In the menu that opens, select Themes to see a list of all the designs that have ever been downloaded to your device. Find the theme you want to remove and click on it. It's important to understand that just clicking on the icon is not enough, you need to open a detailed theme page where the control buttons are.
On the selected theme page, look at the bottom of the screen, and there should be a button that says Delete or a basket icon. If you see the Apply button, then the theme is already deleted from memory, but not activated, or it is system. Press Delete and confirm the action in the pop-up window.
If the delete button is missing or inactive, it may mean that the theme is protected or part of the system files, in which case try to apply the standard theme first, and then repeat the deletion procedure. Sometimes the system blocks the removal of the active theme, requiring you to switch to another.
Reset to a standard default theme
Often, users don't just want to delete one particular theme, but they want to return the phone to its full factory look. The standard MIUI theme is optimized for Redmi 9A and provides better performance. To perform a reset, open the Themes app and go to Profile.
In your themes list, find an option called Classic or No Name (sometimes marked as standard). Click on it and select Apply. This action will instantly replace all icons, wallpaper and fonts with factory settings.
After applying the standard design, it is recommended to restart the device, which will help the system completely clear the cache of the old theme and correctly display all the interface elements.Reboot is especially important if the previous theme made changes to the system fonts or notification bar.
⚠️ Warning: If you notice that widgets are missing or icon sizes have changed after resetting the theme, don’t panic. Just add widgets again through the desktop editing menu, and you can change the grid size in the screen settings.
It is important to note that the theme reset does not delete your personal data, such as photos or contacts.However, if the theme included special lock screen wallpapers with passwords or widgets, they may disappear.
Removal of topics blocked by the system
Sometimes, you have a situation where the theme is not removed in the standard way, which may be due to access rights or errors in the MIUI file system. In such cases, you can try to clear the data of the Themes application itself. Go to the phone settings, then select Apps → All Apps.
Find the Topic app in the list and click on it. In the menu that opens, select Memory, and then click Clean and select Clear All. This action will reset the application settings to the themes, but will not delete the files themselves to the themes from memory completely, but can unlock the deletion function.
Once the application data is cleared, go back to the themes section and try to delete the problem file. If that doesn't work, you can use the file manager. Open the Explorer app and go to the MIUI → theme folder.
Be very careful when deleting files manually. Only delete files that you know or have downloaded. You should avoid touching system files so as not to disrupt the interface. If you are unsure of the file's purpose, skip this step.
What if the topic is deleted but reappears?
Clearing the cache and freeing up memory
Even after you delete the theme, some of the residues may remain in the cache, which is a temporary space that can grow over time, and then go to Settings → Storage to clear the cache, and here the system will show how much space the applications and their data take up.
Find the Topics app in the list of the most spaced ones. Click on it and select the Clear Cache option. Don't confuse it with the Clear All button, as the last action will reset the app's settings as described in the previous section.
It’s also worth checking the download folder. Often users download.mtz theme files and forget to delete them. Open Explorer, go to Download or Download folder, and delete all files with the.mtz extension if you no longer need them.
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Check your Downloads folder regularly for old APKs and MTZ files, which can take up hundreds of megabytes and slow down Redmi 9A.
Cleaning the cache also helps to correct icon display errors. If after removing the theme you see “broken” icons on your desktop, cleaning the launcher cache and theme app should solve the problem.
Comparison of methods of deleting topics
There are several approaches to managing themes, and each has its own advantages and disadvantages, and the choice of method depends on your specific situation: whether you need to delete one topic, clean everything at once or solve the problem with hanging.
The table below compares the basic methods so that you can choose the most suitable one for your case.
| Method | Difficulty | Efficiency | Risk of error |
|---|---|---|---|
| Through the Topics app | Low. | Tall. | Minimum |
| Reset to the classics | Low. | Medium | Absent. |
| Cleaning the application data | Medium | Tall. | Low. |
| Manual deletion of files | Tall. | Maximum | High-pitched |
As you can see from the table, for most users, the best option is to use the standard functionality of the application. Manual deletion of files is recommended only for advanced users who understand the structure of the Android file system.
If none of the methods work, the problem may be deeper in the system, and in rare cases, updating the Themes app via GetApps or Play Market to the latest version helps.
Frequent problems and their solution
Redmi 9A users may have a variety of difficulties trying to change or delete a theme. One common problem is that the Remove button is inactive (grey). This happens if the theme is currently active. Apply another theme, such as the standard one, first, and then go back to deleting.
Another problem is that ads appear in the topic after deleting, which is a sign that the phone has an ad module that was bundled with the topic, in which case it is recommended to check the list of installed applications and remove suspicious programs with unknown names.
⚠️ Note: If after removing the theme, the phone began to work unstable or there were constant departures of the interface, reset the theme settings through the recovery menu (Recovery) or contact the service center.
It also happens that the theme is deleted, but the desktop wallpaper remains the same. This is normal, because the wallpaper and theme are different elements. To change the wallpaper, press and hold your finger on the empty space of the desktop and select Wallpaper.
☑️ Checking after deleting the topic
How to avoid problems with topics in the future
To keep your Xiaomi Redmi 9A running consistently, it is recommended that you download themes only from the official GetApps store or the built-in Themes app.Third-party sources may contain malicious code or unoptimized files that conflict with the MIUI version.
Always read other users' reviews before installing a new theme. If people write about bugs or ads, it's best to refrain from downloading. Also pay attention to the size of the theme: too heavy topics with live animations can quickly land the battery of a budget smartphone.
Regularly review the themes you have installed, and if you've used a theme once and you don't like it, delete it immediately without waiting for the memory to fill up, a simple habit that will help keep your phone clean.
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Using only proven themes from the official directory is the best protection against viruses and system errors on Xiaomi.
Remember that personalization is a great way to stand out, but system stability should always be a priority. Follow these simple rules and your smartphone will delight you with a quick response and beautiful appearance.