Owners of Xiaomi, Redmi and POCO smartphones often face the need to increase the size of text on the screen. Standard system settings, despite their flexibility, sometimes do not allow you to make the font large enough for comfortable reading, especially for people with impaired vision or in poor lighting. The problem is relevant not only for older users, but also for those who use high-resolution devices matrix, where the interface elements may appear microscopic.
Modern MIUI shells and the new HyperOS offer advanced customization capabilities that go beyond just a size slider. In this article, we’ll take a look at all the scaling techniques available, including the developer’s hidden settings that allow you to change pixel density (DPI) and make text truly readable. You’ll learn to manage font size systematically without having to install third-party launchers.
Many users mistakenly believe that increasing the font distorts the picture or breaks the layout of applications. In fact, the proper setting of screen density and the use of built-in accessibility features allows you to maintain the proportions of the interface. We will look at safe ways of setting up that will not lead to software failures, and also discuss how to adapt individual elements of the interface to your needs.
Standard font size settings in MIUI and HyperOS
The first and most obvious step is to use the standard settings menu, which is deep enough in the shells from Xiaomi. The basic method is suitable for most users who need a slight or medium increase in text. First, you need to go to the Settings menu, then select the Screen (or Additional settings in older versions) and find the Text Size section. Here you will see a slider, moving which instantly changes the font size in all supported applications.
However, in newer versions of firmware, Xiaomi engineers have added a finer setup. If simply moving the slider is not enough, you should pay attention to the Additional settings section inside the screen menu. This often hides the option of Size of interface elements, which scales not only letters, but also buttons, icons and indentations. This is critical for devices with a diagonal of less than 6 inches, where the pixel density is high.
⚠️ Note: As you maximize font, some buttons in apps may move beyond the visible area of the screen. If you notice that the OK or Back button has become invisible, just reduce the slider's value by one division.
In HyperOS, the text algorithm has been redesigned for better readability. The system now automatically suggests enlarging the font when you first set up your smartphone if you recognize that the user is holding the phone far from your eyes (using the proximity sensor and the front-facing camera in some scenarios).
Remember, changing the font size on the system doesn't always affect third-party apps like WhatsApp or Telegram. In these, typography settings often take precedence over system settings. So, if you change the global settings, go to the settings of each messenger and check if the values are overridden. This is a common mistake when the user changes the settings of the system, but in chats the text remains small.
Use of augmentation mode for visually impaired
If standard sliders are severely lacking, a dedicated accessibility mode comes to the rescue. In Xiaomi, it's called "Increase Mode" or "Increase" and is on the Settings path → Special Settings → Special Features → Vision → Enlargement. This tool allows you to create a temporary magnifier that zooms in on any part of the screen by double or triple touch.
Unlike just changing the font, this method doesn't break the layout of the applications. You get a full-fledged magnifier that you can move around the screen with your finger. It's the perfect solution for reading small text in your browser or viewing details on a map when you want to zoom in on just a specific area, not the entire interface. Activation occurs through a special feature menu or a designated key combination.
- 🔍 Double touch with three fingers – includes a magnifying glass on the whole screen.
- 👆 Triple touch with one finger – includes a magnifying glass in the corner of the screen.
- 📏 Scaling with two fingers - allows you to change the degree of magnification inside the magnifier mode.
Importantly, this mode consumes more CPU resources, as the system must render a magnified image in real time. On budget models of the Redmi C series or older POCO smartphones, this can lead to micro-scroll delays. However, for episodic reading of small text, this is the best option, not requiring root rights.
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Set a volume button to activate the magnification. In the special features menu, select "Special Opportunity Shortcut" and tie it to a long press of both volume buttons.
There's also a Lite mode feature that changes the interface dramatically, and when you turn it on, the font becomes huge, the icons too, and the extra features are hidden, and it's not just a font augmentation, it's a complete redesign of the launcher to suit the needs of older people, and you can switch to this mode through Settings → Large Mode.
Setting up DPI density through the developer menu
For advanced users who need extreme values, there is a method of changing the minimum width (DPI) that tells the Android operating system how many pixels to set aside under one logical inch. Reducing this number makes all elements, including the font, larger. Access to this setting is hidden in the developer menu.
To activate the developer menu, go to Settings → About Phone and quickly click 7 times on the MIUI Version (or OS Version). After the message “You became a developer”, you need to go back to the main settings menu, select Additional settings → For developers. In the list that opens, look for the Smallest Wide option.
⚠️ Note: Write down the initial value DPI Standard values are usually in the range of 360 to 420. If you set a value too low (for example, less than 200), the interface can become unreadable, and it will be difficult to return everything back without resetting the settings.
Changing the DPI affects everything: fonts get bolder and bigger, icons grow, indentations increase. This is the most effective way to make a typeface really big, outperforming the standard slider. However, beware: some applications, especially banking or fixed layout, may not display correctly, with cropped edges.
☑️ Safe change DPI
Note that on smartphones with AMOLED screens, changing the DPI does not affect color reproduction, but can change the density of the elements. After changing the setting, the phone may need to reboot. If the screen is too large and you can’t get on the menu to return everything back, try quickly pressing the on button five times (if the SOS shortcut is assigned) or using voice control if it is configured.
Comparison of methods of text enlargement
To make it easier for you to choose the right way, we have prepared a comparison table that will help you understand which method is best for your particular situation: whether you need to increase text everywhere, only in the browser, or you are willing to risk stability for the sake of maximum size.
| Method | Impact on the system | Security | Recommended use |
|---|---|---|---|
| Slideer in settings | Only text | Tall. | Daily use, easy correction |
| Increase mode (Loop) | Temporary, local. | Tall. | Reading small text, maps, menus |
| Change to DPI | The whole interface and fonts | Medium (requires caution) | For the visually impaired, the maximum size |
| Large mode (Lite) | Complete restructuring of the interface | Tall. | For older people, easier navigation |
As you can see from the table, changing the DPI is the most visible visual effect, but it requires technical literacy. The standard slider is safe but limited. The magnifier mode is good as a support tool. Combining these techniques (e.g., a mean slider magnification and an active magnifier) often produces better results than trying to squeeze the maximum out of one tool.
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The optimal strategy is to set the font slider to a value just above average and use the zoom mode for rare occasions of reading very small text.
Features of fonts in the browser and applications
Often users complain that after you set up the system, the text in the Chrome or Mi Browser browser remains small, which is due to the fact that the web pages have their own styles. To fix this, you need to go to the settings of the browser itself. In Chrome, this is done through a three-point menu → Settings → Special features → Scaling text. You can zoom up to 200% here independently of the system.
YouTube also has its own subtitle size set up separately. Go to the app's settings, select "Subtitles" and resize the text. This applies to social media too: Telegram has its own font size slider in Settings → Chats. Ignoring these internal settings negates efforts to globalize the phone.
- 🌐 Browsers: Use the Mobile Version or Full Version function of the site, as responsive layout can ignore the system font.
- 📱 Social networks: check the “Chats” or “Design” section in each application separately.
- 📚 E-books: applications like FBReader or Moon+ Reader completely ignores system fonts, having its own powerful rendering engines.
Also worth mentioning is the Dark Theme feature. Although it doesn't physically enlarge the font, using white text on a black background (inversion) often makes reading easier for people with farsightedness. You can turn it on in the notification curtain or in the screen settings. On Xiaomi AMOLED screens, it also saves battery life.
Solving scaling and bug problems
Sometimes, after updating your firmware or installing a heavy application, your font settings may go off or be incorrectly applied. If you notice that some menus have text hitting buttons or becoming unreadable, try resetting your design settings. You can do this by returning the theme to the standard ("Classic" or "Default") through the Theme app.
Another common problem is that older apps are not compatible with the high-resolution screens of modern Xiaomi, in which case the text can be microscopic despite the settings, and the solution lies in the developer menu: find the interface scale (or Forced Size) item and try to choose the value that matches your screen, or, conversely, emulate a lower resolution.
What if the interface becomes unreadable after the DPI changes?
And the physical aspect, too. If you have to twist the font to the maximum, you might want to consider buying a smartphone with a larger screen size or a lower-resolution matrix model (though there aren't many of these at the moment). Also check if you have button zoom in on special features that might conflict with manual scale settings.