How to increase the font on the smartphone Xiaomi Redmi 9: a detailed guide with illustrations

The fine print on the Xiaomi Redmi 9 screen can be a real problem — especially for visually impaired users or those who are used to working with the phone in bright light. Fortunately, the manufacturer has provided several ways to zoom in text, and in extreme cases, third-party solutions will help. In this article, we will analyze all available methods of increasing the font, from standard MIUI settings to hidden features for power users.

It's important to understand that changing the size of text affects not only the readability, but also the display of the interface: some elements can move out, and icons can decrease. We'll tell you how to avoid typical errors and choose the best options. If you've tried to change the font through Settings → Screen, but the result did not work well, don't despair: Redmi 9 has other tools.

Method 1: Standard Resize of a Typeface in MIUI

The most obvious and safe method is to use the built-in MIUI shell settings, which are suitable for most users and do not require additional software installation.

1. Open the Settings menu (the gear icon on the home screen).
2. Go to the Screen section.
3. Select Text Size (or Font Size and Display Depending on the firmware version).
4. With the slider, adjust the font size. You can get values from Small to Very Large.
5. Click Ready or Apply to save the changes.

Note that MIUI 12/13 also has a Display Scale option for Redmi 9 that not only increases the font, but also all interface elements.This is useful if the text is readable but the buttons and icons are too small. However, when activated, some applications (such as games or banking services) may not display correctly.

If after changing the font size, some system applications (such as Camera or Phone) have become unusual, do not be afraid. This is normal MIUI behavior, and after 1-2 reboots, the interface adapts. In extreme cases, reset the display settings to the standard and try another method.

Method 2: Use of the "For the Visually Impaired" mode

For users with severe vision problems, Redmi 9 has a special mode that not only increases the font, but also simplifies the interface, which dramatically changes the appearance of the system, so it's not suitable for everyone.

1. Go to Settings. → Special facilities.
2. Choose a Vision (or Improve Visibility)
3. Activate the switch Large text or Mode for the visually impaired.
4. In the window that appears, set up: 🔤 Font size (values up to 200% of the standard) 🎨 Contrast (helps with color blindness) 🔍 Gesture augmentation (triple touch to zoom screen)

The main difference from the usual type change mode is the global application to all elements, including system notifications and quick settings menus. However, be prepared for the fact that some applications (such as Instagram or Tinkoff Bank) may ignore these settings and display text in its original size.

⚠️ Note: The mode for the visually impaired may conflict with some of the themes of design from the MIUI If after activation the screens began to slow down - return the standard theme or turn off the mode.

Method 3: Change the system font through MIUI Themes

Few people know, Redmi 9 not only allows you to increase the font size, but also completely replace it with another type, for example, a bolder or with serifs. This is done through the application Themes (MIUI Themes), which is preinstalled on all Xiaomi smartphones.

1. Open the Themes app (the icon with a brush on the home screen).
2. Go to the Font tab (may be in the Customization section).
3. Choose your favorite font from the collection (for example, MiSans Heavy or Roboto Bold).
4. Click Apply and confirm the download (if the font is not installed).
5. After application, go back to Settings → Screen → Text Size and adjust the size for the new font.

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If after changing the font, some characters are displayed in squares - return the standard font and clear the cache of the Themes application in the storage settings.

Method 4: Manual editing of build.prop file (for advanced)

This method is only suitable for users with unlocked bootloader and root rights, as it requires editing the system file build.prop. ro.sf.lcd_density, pixel-density (DPI) It's an indirect effect on the size of the font. ADB or TWRP This method of using is not recommended!

If you do, here is a step-by-step instruction:

1. Install ADB- Drivers on your PC and connect Redmi 9 to USB (with debugging enabled on USB).


2. Open the command line and type:




adb shell




su




mount -o rw,remount /system




3. Open the build.prop file in the text editor:




nano /system/build.prop




4Find a line. ro.sf.lcd_density=XXX (usually) 390 for Redmi 9) and change the value to less (e.g. 360 to increase the elements).




5. Save the file (Ctrl+O → Enter → Ctrl+X) and restart the phone.

The effect will be noticeable immediately after the reboot: all interface elements, including the font, will become larger, but this method has serious shortcomings:

⚠️ Warning: Incorrect editing build.prop can lead to loss of warranty and the need for a complete flashing of the phone.Before changes, make a backup of the file with the adb pull command /system/build.prop.

Method 5: Third-party applications to increase font

If the built-in methods don't work, you can use third-party utilities, for example, Big Font (available on Google Play) allows you to zoom in to 300% of the standard size without requiring root rights.

1. Download and install Big Font from the official store.
2. Launch the application and grant it the right to change system settings (a request will appear to enable Special features).
3. Move the Font Scale slider to the desired value (we recommend starting at 150%).
4. Press Apply and restart the phone.

Advantages of this method:

• 📈 More flexible size setting (step 10% instead of 25% in size) MIUI)
• 🔄 Quickly return to standard settings
• 🛠️ It works on all versions of Android (including Redmi). 9 on MIUI 11-14)

But there are pitfalls:

• 🚫 Some banking applications block work if Big Font is detected (due to accessibility rights)
• 🔋 Increases battery consumption (the application works in the background)
• 📱 It may conflict with other customization utilities (e.g. Nova Launcher)

Comparison of methods: which one to choose?

To make the choice easier, we have summarized the key characteristics of each method in one table:

For most Redmi 9 users, the best solution is to combine standard MIUI settings and change the font through Themes, which gives you enough magnification without risk to the system. If you want maximum scaling, try Big Font, but be prepared for possible conflicts with banking applications.

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Build.prop is a last resort, and 90% of small print problems are solved by standard MIUI tools or third-party root-free utilities.

Frequent problems and their solutions

When changing the font size to Redmi 9, users often encounter common errors, and here are the most common ones and how to fix them:

• 🔄 Font reset after update MIUI This is normal system behavior. Once you update your firmware, return the settings manually through Settings. → If you used Big Font, reinstall the app.
• 📱 Some apps don't change font size Many programs (such as VKontakte or YouTube) have their own font settings. Check them in the app menu or use the For the visually impaired mode.
• ⚡ The phone started to brake after increasing the font Reset to the standard and try another method. If the problem remains, clear the cache in Settings. → Warehouse → Cleanup.
• 🔤 Text has become blurry or pixelated This occurs when you over-magnify (over 150%). Reduce the font size or choose a font with better readability (e.g. Noto Sans).

If none of the methods worked, check if the phone has performance profiles (such as Game Mode) that can block interface changes. Disable them in Settings → Special Features → Performance.

FAQ: Answers to popular questions