Personalizing the look of a smartphone is the first step that many owners take immediately after buying. Xiaomi’s Redmi lineup provides a wide range of options for changing the interface to turn a standard shell into a unique product. The visual design is especially relevant for the Redmi 9, which, despite its affordable price, has powerful customization tools.
Changing the system headset affects not only aesthetics, but also readability in menus and apps. For people with low vision or just for those who want to refresh their perception of information, this is a critical setup. In this article, we will detail all the available methods, from official to advanced, that will allow you to change the spelling on your device.
It’s worth noting that the process of installing new design elements in MIUI (Xiaomi’s Android shell) has its own peculiarities. Standard Android methods may not work without additional software. However, following proven algorithms, you can safely implement the desired style of text without disrupting the operating system.
Official MIUI Theme Store: Basic Method
The easiest and safest way to change the style of text display is to use the built-in Themes app, a standard tool pre-installed on all Xiaomi smartphones, including the Redmi 9, which does not require root rights or a computer connection, making it ideal for beginners.
To get started, you need to open the Themes app on the home screen, and at the bottom of the interface, you'll see a navigation bar where you want to select the Profile tab (usually marked by a human icon), and that's where the settings for the system components of the design are hidden.
In the profile menu, find the Font item. Clicking on it will take you to the directory of available headsets. It features both free and paid options. Free fonts are often marked with a "Free" icon or simply do not have a price. Once you select the appropriate option, click Download and then Apply.
- 📱 Open the “Themes” app on your desktop.
- 👤 Go to the Profile section in the lower right corner.
- 🔤 Select the "Fonts" item to access the directory.
- ⬇️ Download and use the option you like.
It is important to understand that the range in the official store can be limited to the regional settings of the Mi Account. If you do not see the desired variety, you may want to change the region in the phone settings to India or Singapore, where the selection is often richer.
⚠️ Note: Some fonts from the official store may not support Cyrillic (Russian letters).In this case, instead of text, you will see squares or question marks. Always check the preview with Russian text before downloading.
Installation of fonts through third-party APK-file
If the standard directory doesn't satisfy your needs, you can use third-party resources. There are many sites on the Internet that offer.mtz or.ttf font files adapted specifically for the MIUI shell. This method gives access to thousands of unique characters that are not available in the official store.
Before installing, you must allow the installation of applications from unknown sources. Go to Settings → Privacy Protection → Special Permissions → Install unknown applications. Select the browser or file manager through which you will download the file and activate the switch.
The downloaded font file (usually an archive or a file with the.mtz extension) must be opened through the file manager, the system automatically prompts you to open it using the Themes app. If this does not happen, manually select the Themes app from the list of available programs.
- 🌐 Download the font file from a trusted source.
- ⚙️ Allow installation from unknown sources in security settings.
- 📂 Open the downloaded file through the file manager.
- ✅ Confirm the installation in the appendix "Themes».
After using a third-party font, it will appear in the active list in the theme profile. You can return to the standard font at any time by selecting it from the same menu..mtz files are preferred because they contain metadata that Xiaomi understands, which reduces the risk of conflict.
⚠️ Note: Only download files from trusted forums and sites. Font files may contain malicious code if they come from questionable sources. Check file extensions to MIUI.mtz,.ttf and.otf are relevant.
Where to look for quality fonts?
Use the zFont 3 application for customization
One of the most popular deep personalization tools is the zFont 3 app. It's a powerful harvester that lets you not only install pre-made fonts, but also create your own based on handwriting or emoji. The app automatically identifies your Redmi 9 model and offers compatible installation methods.
After installing and running the app, you will be prompted to choose the installation method. For Xiaomi devices with a MIUI shell, the method “Method 2” or “Method 3” is usually recommended (depending on the version of Android).
The application database has fonts from Google Fonts that can be downloaded in one click. There is also a feature of creating a font from emojis: you can make text in the style of famous characters or logos. After choosing a style, click the Apply button and the application will redirect you to the theme settings or suggest installing a special plugin.
- 📥 Install the zFont 3 app from Google Play.
- 🔍 Select the “Emoji” or “Fonts” tab to search for style.
- ⚙️ Follow the instructions inside the app for your model.
- 🔄 Restart the device to apply changes.
The thing about zFont 3 is that it can require you to install a temporary font or plugin to complete the process. Don't be alarmed if the system warns you about replacing system files, it's part of the process of implementing the new style. Once you reboot, you'll get a fully customized interface.
☑️ Checking the compatibility of zFont
Comparison of font modification methods
The choice of how to change the font depends on your goals and level of technical training. Each method has its advantages and disadvantages, which should be considered before starting the procedure. Below is a table that helps you determine the best option for your case.
| Method | Difficulty | Security | Choice of fonts |
|---|---|---|---|
| Tham Store (Official) | Low. | Tall. | Limited. |
| Third-party APKs (.mtz) | Medium | Medium | Huge. |
| Annex zFont 3 | Medium | Tall. | Huge + Emoji |
| Root rights (System Font Changer) | Tall. | Low. | Limitless. |
As you can see from the table, for most Redmi 9 users, the optimal balance between simplicity and variety is to use the zFont 3 app or download.mtz files. The official store is good for those who are afraid of breaking something and are willing to put up with limited choices. Root rights give full control, but carry the risk of turning the phone into a “brick” if you make a mistake.
Setting the size and fat content of the text
Often, users don't need to change the font itself so much as adjust the size or saturation of the font. Redmi 9 puts these settings in a separate menu, available without installing additional files, which improves readability for people with visual impairment.
Go to Settings → Screen → Text Size. Here you will see a slider that can change the size of the font throughout the system. Note that resizing can cause some interface elements to look “drived” or text to not fit into the designated fields.
To adjust the fat content, you use a slider called "Bold" on the same menu, and increasing this parameter makes the letters more contrasting, which is useful in bright sunlight. AMOLED-Screens (although Redmi 9 is a good one) IPS) This could affect energy consumption, but in this case it only affects visual perception.
- 📏 Adjust the text size through the slider in the screen settings.
- 💡 Use the "Bold" mode for better readability.
- 👁️ Check the text display in different apps after the changes.
- ↩️ If necessary, return the settings to the value of “By default».
There's also a hidden minimum width setting (DPI) available through the developer menu, which scales the entire interface, making elements smaller and allowing more information to fit on the screen. Beware: setting an DPI too high can make the interface unreadable.
⚠️ Attention: Do not set the value DPI It's below 300 or above 600 without needing it, and it can cause you to be unable to get into the settings to get it back, and you have to do a complete reset of your phone.
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If after changing the font, some applications (for example, banking) display the text incorrectly, try in the font settings (in the Themes app) to select the option “Reset” or temporarily return to the system font.
Possible problems and ways to solve them
In the process of experimenting with the design, Xiaomi users may face a number of typical problems, most often associated with incorrect display of characters or conflicts of Android versions, Understanding the causes will help quickly resolve the malfunction.
One of the common problems is that you have to have squares instead of letters in menus or messages, which means that the font you choose doesn't have Cyrillic characters, and that's simple: you go back to the Topics app, you pick the standard Roboto or MI Sans font, and you apply it.
Another problem is that the theme is reset after the system update, so if you upgrade MIUI to a new version of Android or a security patch, custom fonts can be reset, and that's normal file integrity behavior, and you'll have to do it again.
- ❌ Squares instead of text – the font does not support Russian.
- 🔄 Reset after update – Repeat font installation.
- 🐛 Interface Glitches – Clear the cache of the “Themes” app».
- 📉 Low performance – use simple fonts without complex graphics.
If the system is unstable after installing the font (no sound, touchscreen does not work in certain areas), you must boot into Safe Mode or use Recovery to reset the theme. Redmi 9 enters Safe Mode by switching off buttons on the lock screen.
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The main rule of customization: always have a standard font on hand in the list of downloaded ones, so that in case of a failure, quickly return the interface to work without complex manipulations.
Return to factory font settings
If you get tired of experimenting with the look or the new font is annoying, you can always go back to the original state. It's a regular feature that doesn't require deleting apps or resetting user data.
Go to the Topics app, go to Profile → Fonts. At the top of the screen, there's usually a tab or a "My Fonts" button or just a list of downloads. Find a font called Default, Roboto or MI Sans. Click on it and select Apply.
After applying the standard font, it is recommended to completely restart the device, this will clear the font display cache and ensure that all applications, including system ones, will display the original headset.
In rare cases, if a standard font has been removed or damaged, it may be necessary to clean the data of the Themes app. Go to Settings → Apps → All Apps → Find Topics → Clear → Clear all data. This will return the font directory to its original state.