Xiaomi and Redmi smartphone owners often strive to maximize personalization of their device. Standard system font may seem boring or not readable enough for some users. Fortunately, MIUI shell and its successor HyperOS provide powerful tools to change the appearance of text without the need to obtain root rights.
The system font replacement procedure is safe and reversible. You can experiment with dozens of styles, going back to factory settings at any time. In this article, we'll break down all the current ways, including hidden features and third-party utilities, that will make your gadget's interface unique.
Before we start to make changes, it is worth noting that some fonts may not display the Cyrillic alphabet correctly, so it is important to pay attention to the support of the Russian language when choosing a new style, otherwise instead of beautiful letters, you risk a set of indistinct characters in menus and applications.
Preparing for System Font Change
Before you start modifying the interface, you need to make sure that the device is stable. Although the font change procedure does not affect the system files of the kernel, errors when downloading the resource can temporarily disrupt the display of text.
Make sure your Mi Account is logged in. Without authorization, many of the themes store features will not be available. Also check for a stable Internet connection, as font files can weigh between 1 and 10 megabytes and require downloading.
⚠️ Note: Installing fonts from unverified sources outside official theme stores can lead to conflicts in the system. Use only verified files with the.mtz extension or official directories.
It's important to distinguish between theme and font. The theme changes icons, wallpaper and sounds, while the font affects only the textual display. You can combine any theme with any set font to create unique bundles.
Official method through the Topics app
The easiest and safest way to change typography is to use the built-in Themes app (or Themes) which does not require any additional software and ensures that the font is compatible with your version of MIUI.
To start, open the Themes app on your desktop. In the bottom navigation bar, find the tab responsible for the fonts. Depending on the region and version of the shell, it can be called "Fonts", "Fonts" or have an "A" icon.
The catalog that opens has a huge selection of free and paid options, you can sort them by popularity, novelty or rating. Pay attention to the preview: the system will automatically show what your text will look like with the selected style.
- 🔍 Click on the magnifier icon to search for the name of a particular font.
- 📥 Choose your favorite option and click the “Download” or “Free” button».
- ✅ After downloading, click “Apply” to activate the new style throughout the system.
After the changes are applied, the screen can blink and all text fields will be updated, and if the result does not suit you, you can return to the standard through the same menu section by selecting the "Default Fonts" option.
☑️ Pre-installing check
Use of Mi Fonts service
In newer versions of the shell, Xiaomi has introduced a separate app or widget called Mi Fonts, a specialized service that often offers more exclusive text design options not available in the general themes catalog.
Mi Fonts interface is as simple as possible. On the home screen, you see the current font and a few recommended alternatives. Swiping left or right allows you to instantly (preview) changes without having to download files.
The service’s feature is the ability to fine-tune text size and saturation, which is especially true for visually impaired users who may not be able to use standard accessibility settings.
| Function | Description | Availability |
|---|---|---|
| Preview | Instant display of changes | All models. |
| Size adjustment | Change the font size | MIUI 12+ |
| Fatiness | Adjustment of line saturation | HyperOS |
| Exports of style | Saving settings into a file | Limited. |
It is worth noting that some premium fonts in Mi Fonts can only be available by subscription or for a one-time payment, and the system will offer to make a purchase before using this style.
What to do if the font is not used?
Installation of third-party fonts through files.mtz
For advanced users who are not satisfied with the assortment of the official store, there is the possibility of installing third-party fonts. The file format for Xiaomi has the extension.mtz.
To install a third-party font, download the file to the device's memory. Then open the Themes app, go to the profile (human icon) and select Import. Find the downloaded file in the download list.
The system will warn you that the file is from an unknown source. Confirm the action. After importing the font will appear in the "My" -> "Fonts" section, where it can be activated in a standard way.
⚠️ Note:.mtz files created for older versions MIUI (for example, MIUI 10 or 11), may not work properly on HyperOS. Always check that the file version is compatible with your firmware.
If standard import doesn’t work, you can use the renaming method: change the file extension from.mtz to.zip, unpack it and place the content in the appropriate folder of the system, but this method requires access rights to system partitions and is not recommended for beginners.
Problems with Cyrillic alphabet and their solution
One of the most common problems with custom font installation is the lack of support for Cyrillic, and many design fonts are created by Western developers and contain only the Latin alphabet.
As a result, after using such a font, all Russian text in the menu, messages and browser turns into squares or incomprehensible characters. It is not a virus or a breakdown, but only the absence of the necessary glyphs in the font file.
To avoid this situation, always check the font description. The official theme store usually has a "Supports Cyrillic" mark or a sample of text in Russian. If there is no example, it is better to refrain from installing.
- 🇷 Look for the phrase “Cyrillic” or “Cyrillic” in the description».
- 👁️ Visually evaluate the preview: if there are only English words, the risk is high.
- 🔄 Have a quick return to standard font (via Safe Mode or Volume button when booting if the phone goes into the bootloom) on hand).
If you do install a Cyrillic-free font and see "crackers," don't panic. press the power button to reboot or use a combination of volume buttons if the interface is completely unreadable to reset the display settings.
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Save the standard font to Favorites in the Themes app before experimenting, which will allow you to return it in one click, even if the interface becomes unreadable.
Setting the size and fat content of the text
Readability is often more important than aesthetics, because Xiaomi's settings allow you to adjust the size of the font separately, regardless of its style, allowing you to use beautiful but thin fonts, making them larger for convenience.
Go to Settings → Screen → Text size. There's a slider that scales the entire system. Some fonts have fixed indentations, so as you zoom in, text can bump into other interface elements.
Also available is the feature "Enlarged Text" in the special features section, which makes the font as large and bold as possible, ignoring some of the design delights of the chosen theme for maximum accessibility.
HyperOS has a separate greasiness setting, so if the font seems too pale, add saturation through the screen settings, which will improve contrast and information perception in bright sunlight.
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The optimal balance between beauty and readability is the key to a comfortable smartphone experience. Don't sacrifice convenience for style.