Modern smartphones like the Xiaomi Redmi Note 9 Pro have high-resolution screens, but standard text settings aren’t always comfortable for all users. Many owners find the system font seems too small, causing eye strain when reading messages, news or web pages. This is especially true for people with low vision or those who simply prefer large typography for ease of perception of information.
Fortunately, the MIUI-enabled Android operating system provides flexible tools for personalizing the interface. Not only can you choose a different style of letters, but you can also drastically scale them up, making text readable even without using a magnifier. In this article, we will take a look at all the methods available, from simple customizations to hidden engineering menus.
Sometimes a standard size slider isn't enough, and the text still feels small on a huge 6.67-inch display, and in these cases, the extra zoom and dot-per-inch density (DPI) options come to the rescue. Let's look at how to safely and efficiently customize your device's screen to suit your needs.
Basic text size settings in MIUI
The easiest and safest way to change the size of letters is to use the built-in tools of the system, which does not require superuser rights and does not affect the stability of the smartphone, but first you need to open the main settings menu, which is usually represented as a gear on the desktop.
In the list of parameters that opens, you'll find the interface look section. The path may vary slightly depending on the firmware version, but the logic remains the same. You'll need to go to Settings → Screen → Text Size. This is where the main regulator that manages the scale of system inscriptions is located.
When you move the slider, you can see changes in the preview, which allows you to choose the best option without unnecessary actions, but it is worth considering that increasing the font can lead to some interface elements being displayed incorrectly or cropped.
- 📱 Open the Settings app on the main screen.
- 👁️ Go to Screen and select Text Size».
- 📏 Move the slider to the right to zoom in or to the left to reduce.
- ✅ Click on “Apply” or “OK” to save the changes.
Note that this change affects not only the system menus, but also most supported applications. The font will become larger in contacts, messages and the browser if developers have provided adaptation to the system settings. It is a universal solution for everyday use.
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If the standard size is still small, try to increase not only the text, but also the overall scale of the elements in the Size of Screen Elements section for maximum effect.
Use of screen scaling mode
In addition to resizing the letters themselves, Redmi Note 9 Pro offers the feature of rescaling the entire interface, which is especially useful when large text takes up too much space and navigation becomes uncomfortable due to the need for constant scrolling. Scaling allows you to zoom in all elements: icons, buttons and text blocks proportionally.
To access this feature, you need to go to Settings → Screen → Screen size. Here you will see a similar slider, but its impact will be more global. The zooming makes the interface more airy and convenient for people with large fingers or trembling hands.
⚠️ Attention: With a large zoom, some apps may not be fully displayed, and some buttons may go beyond the visible area.
You can also combine text size and general scale settings, and by experimenting with both, you can achieve the perfect balance between readability and the amount of information that you can put on a single screen, which is especially important for working with documents or tables on a mobile device.
Advanced settings through the developer menu
If you don't have enough standard tools, you can use the hidden developer menu, and you can use the Minimum Width (DPI) setting, which directly affects the density of the pixels you display, and you can change that setting to make the font much larger than what is possible with standard methods.
To activate this mode, go to Settings → About Phone and quickly click on the “MIUI Version” option seven times. After the message “You became a developer” appears in the settings menu, a new section “Additional” or “Extended settings” will appear, where you need to select “For developers”.
In the list of options, find the item "Minimum width" (or "Smallest width"). The standard value for the Redmi Note 9 Pro is usually around 360-392 dp. Reducing this number will lead to an increase in all interface elements, including fonts. Be careful: too low a value can make the system unusable.
- 🔧 Activate the developer mode with seven times pressing the OS version.
- 📉 Find the Minimum Width option in the Developer Menu.
- 🔢 Write down the original value so you can get it all back.
- 📉 Reduce the number by 20-30 Units and check the result.
DPI (dots per inch) is a key parameter that determines how many dots are displayed per inch of screen, and by manipulating it, you actually change the logical resolution of the interface, and it's a powerful tool, but it requires care, because it can affect the performance of some applications that can't scale properly.
How to return the original DPI settings?
Features of fonts and themes of design
MIUI is famous for its customization, and the choice of type is not the least of the things that play a role here, because some headsets naturally look bigger and fatter than others with the same pin, and you can change not only the size, but also the style of the type with the Themes app.
Go to the Topics → Profile → Fonts app, and you can find a catalog of free and paid fonts, and if you choose a font with wider glyphs or higher sign height, you can visually zoom in without changing the system settings to scale, and it's a great way to refresh the interface.
It's worth noting that third-party fonts may not be supported in all apps. System menus are likely to change their appearance, but some programs will remain standard Roboto or San Francisco font, which is a limitation of security and compatibility with the Android operating system.
| Parameter | Standard value | Recommended for large text | Impact |
|---|---|---|---|
| Size of text | Medium. | Big/Huge/Huge. | Text blocks only |
| Screen size | 100% (or Small) | Large / Largest | Text and icons |
| Min. width (DPI) | ~392 dp | ~320-340 dp | The interface is global. |
| Fatiness | Normal | Bold (in topics) | Visual perception |
Using contrasting themes also helps improve readability: Black text on a white background or vice versa (in a dark topic) is perceived more easily than gray text on a colored background. Include a dark theme in the Screen section if the brightness of the screen prevents you from reading.
☑️ Verification of readability
Increased (Lupa) mode for visually impaired
For users with severe vision problems, Android has a special accessibility mode built in, which doesn't change the font all the time, but allows you to zoom in on any part of the screen at any time with a finger movement, and it's called Magnification, which works like a virtual magnifier.
You can activate it via the Settings path → Advanced Settings → Special Features → Enlarge. Once turned on, a button will appear on the screen or an action will be assigned (for example, triple tapping the screen) that triggers zoom mode, you can swipe across the screen, looking at small details.
This mode is indispensable for maps, complex graphs or small text in newspapers scanned in PDF. It does not replace constant font setting, but serves as a great tool for assisting. It does not require Internet and works locally on the device.
⚠️ Attention: In magnification mode, navigation on the phone can become difficult, as normal touches will be perceived as moving a magnifying glass.
And then there's TalkBack, which voices all the actions on the screen. While it doesn't visually enlarge the font, it changes the way you interact with the Xiaomi Redmi Note 9 Pro for people with visual impairments. The combination of large font and voice is the best way to get the best results.
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Magnification mode is a temporary solution for detailed consideration, rather than replacing the constant font size setting in the system.
Frequent problems and their solution
When you change your settings, you may encounter display artifacts, such as text bumping into pictures, buttons getting too big for the screen, or some apps getting out, most often by going back to standard DPI values.
Another common problem is the desynchronization of fonts in different applications, while everything is big in Contacts, in Viber or Telegram, the text can remain small, because many messengers have their own internal font settings that ignore the system.
To solve a problem in messengers, you need to go to their personal settings. Usually the path looks like Settings → Chats → Font size. You can independently adjust the scale of messages there. This is a feature of the application architecture, not a phone bug.
- 🐛 Reset the display settings if the interface is “gotten».
- 📱 Check the font settings within each specific application.
- 🔄 Restart the device after changing the parameters DPI.
- 🎨 Remove third-party themes if they conflict with system fonts.
If you have changed the DPI and the phone has stopped turning on or shows a black screen, don't panic. Try entering Safe Mode (clamping the off button at start) or resetting through the Recovery menu by holding the volume buttons when the phone is off.