How to increase the font in Viber on Xiaomi phone: all the ways from system settings to hidden chips

The small text in Viber on your Xiaomi makes you squint or strain your eyes? The problem is familiar to many - especially owners of high-resolution devices, where the default fonts seem too miniaturized. Fortunately, you can fix this in several ways, from global scaling of the system to fine-tuning the messenger itself.

In this article, we will discuss all available methods of increasing fonts, from standard MIUI functions to little-known tricks that work even on older Redmi or POCO models. You will learn how to change the text size only in Viber (without affecting other applications), what to do if the messenger settings are not saved, and how to return everything back if the result does not suit you.

Spoiler: The most reliable way is to combine system scaling and Viber's internal settings, but there are also non-obvious solutions for those who need to zoom in only chat rooms or only contact names.

1. Enlarge the font through the MIUI system settings

The most universal method is to scale text at the operating system level, which will affect all applications, including Viber, but it will work even on older versions of MIUI.

How to do this:

1. Open the Settings → Screen.
2. Select text size (in some firmware - font size).
3. Move the slider to the right to enlarge the font, and the values available are Small to Very Large.
4. Click Ready and wait for the system to apply the changes (reboot may be required).

⚠️ Note: Some models (e.g. Redmi) 9A or POCO M3) If you maximize the font, you can move the interfaces of some applications. If you change Viber, you start to show a curve, you can put the slider back one division.

This is a good method if you want to zoom in all your messengers at the same time, but if you want to change the font only in Viber, read on.

Check out the MIUI version (Settings → About the phone)

Close all background applications

Connect your phone to charge (older models have longer settings)

Take a screenshot of the current screen settings (in case of rollbacks)-->

2. font settings directly in Viber

Viber has built-in tools for resizing text, but they're hidden deeper than most messengers, and the main thing is that these settings don't affect the system font, but only the way messages are displayed in chats.

Step-by-step:

1. Open Viber and tap on the icon. ⋮ (three points) in lower right corner.
2. Select Settings → Design.
3. Find the text size and select one of the options: Normal, Large or Very Large.
4. Application changes may require restarting the application.

🔍 Important: Customization is only available in the latest versions of Viber (2023-2026).If you have an older version, first update the messenger via Google Play or AppGallery.

Unfortunately, Viber doesn't have the ability to change the font just for contact names or message times, but these elements scale proportionally to the main text, but there's a hidden feature for the visually impaired:

3. Use of the "Zoom" function in MIUI

If the system enlargement of the font and the settings of Viber do not give the desired result, you can use the screen zoom function. This will not change the size of the font per se, but will allow you to zoom in text gestures - useful for reading long messages.

How to turn on:

1. Go to Settings → Special Opportunities → Scale.
2. Activate the Short Press toggle to scale.
3. Now tap the screen three times (not on the keyboard!) and a magnifier will appear that can be controlled to zoom in on text.

⚠️ Note: On some Xiaomi models (e.g. Redmi Note 8 Pro), the zoom function may conflict with navigation gestures. If the swipes stop working after the magnifiers are turned on, turn off the scale or use button navigation (Settings) → System system → Gestures → Navigation buttons).

4. Reset Viber settings to factory

Sometimes the font settings in Viber are confused after updating or transferring chats to a new phone. If you changed the text size but nothing happened, try resetting the messenger settings:

Instructions:

1. Open Viber and go to Settings → Account.
2. Select Reset Settings (bottom of the list).
3. Confirm action. Attention: this won't delete your messages, but it will return all visual parameters to default values.
4. After resetting, reset the desired font size in Settings → Design.

If the reset didn't work, the problem could be in the app's cache.

1. Close Viber.
2. Go to Settings → Applications → Application Management → Viber → Storage.
3. Click Clear cache (not data!).
4. Restart the messenger.

💡

Before clearing the cache, back up your chats in Viber: Settings → Account → Backup. This will save your messages if something goes wrong.

5. Alternative methods: third-party applications and launchers

If the built-in methods don't work, you can go around the way of using scale launchers or specialized utilities, which is suitable for advanced users, because it requires additional manipulation.

Option 1: Nova Launcher Launcher

1. Install Nova Launcher from Google Play.
2. In the launcher settings, find Settings → Size of icons and text.
3. Increase the text scale option (this will affect app shortcuts, but not Viber itself).

Option 2: Big Font (requires root)

1. Download Big Font from the app store.
2. Provide root access (if the phone is not rooted, this method will not work).
3. Select Viber from the list of applications and set the desired font size.

⚠️ Note: Using third-party utilities may disrupt the work MIUI or cause failures in Viber. Before experimenting, back up your data through Settings → Additionally. → Backup and reset.

💡

Third-party font change apps are unstable and may conflict with MIUI updates. Use them only if standard methods have not helped.

6. Features for the visually impaired: high contrast mode

If you want to not just zoom in on the font, but make it as readable as possible, MIUI has a special mode for people with visual impairments that combines large text, high contrast and a simplified interface.

How to turn on:

1. Open Settings → Special Opportunities → Vision.
2. Select High Contrast Mode.
3. Activate the switch and adjust the settings: 🔹 Increase text – maximum font size 🔹 Simplify animations – remove unnecessary effects in Viber 🔹 Color filters – improve text perception during color blindness

In this mode, Viber will be displayed with black background and white text, and the font size will automatically set to the Very Large level.

💡 Tip: If you only need a large font without changing the color scheme, try the combination:

1. Enable High Contrast Mode.
2. In Viber settings, turn off Dark Theme.
3. Return to Special Options and turn off Color filters.

This trick allows you to get the largest font in Viber without changing the colors of the interface.

7. What to do if nothing works?

If neither method worked, the problem could be in a particular version of MIUI or Viber, and here's a checklist for diagnosis:

• 📱 Check the version. MIUI: old firmware (below) MIUI 12) may not support font scaling for individual applications.
• 🔄 Update Viber to the latest version (sometimes font bugs are fixed in patches).
• 🧹 Clear Viber data (not cache, but data) - this will reset all settings, but can solve the problem!
• 📡 Check if the power saving mode is on: it can block some visual settings.

If the problem persists, there are two options:

1. Reverse the Viber update to the previous version (you can download APK from apkmirror.com).

Alternative messengers with more flexible font settings, such as Telegram or WhatsApp, can be considered as a last resort, where text size changes regardless of system parameters.

Frequently asked questions