Many users of Xiaomi, Redmi and Poco smartphones face a situation where the device interface suddenly becomes completely black or dark gray. Often this happens after upgrading the firmware to the current version of MIUI or the new HyperOS shell, where the dark theme is installed by default. However, there are cases when the system “hangs” in this mode, ignoring switching attempts, or light elements become unreadable in a dark background, which causes serious discomfort in bright light.
The problem can be both the banal switch in the notification curtain and the deep system conflicts of the theme. In this article, we will discuss all possible ways to return the usual light interface. You will learn how to change the design settings correctly, what to do if the theme slider does not respond to clicks, and how to forcefully reset the system parameters if a software failure does not allow you to choose the light mode by standard methods.
Before embarking on radical measures like a full data reset, a number of less aggressive methods are worth trying. The interface of the modern Android shells from the Chinese manufacturer is quite flexible, but sometimes requires a careful approach to detail. We will consider a step-by-step algorithm of actions that will help solve the problem of unwanted dark design in 99% of cases.
Check the basic design settings in MIUI and HyperOS
The most obvious, but sometimes overlooked, step is to check the main settings menu. In recent firmware versions, developers could change the location of the switches or implement automatic switching on a schedule. You need to go to the Settings menu and find the Screen or Wallpaper and personalization section, and that's where the master switch controls the system's color scheme hides.
If you use a HyperOS shell, the path may be slightly different from the classic MIUI. In the new system, the logic of the parameter grouping is changed for convenience. Often users look for the switch in the About Display section, whereas it moved to the theme subsection. Make sure you are in the correct menu before making conclusions about the malfunction.
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In newer versions of HyperOS, the theme switch can be hidden inside the Wallpaper and Personalization menu -> the Color Scheme tab, rather than in the main screen settings.
Once you find the right item, make sure you choose the "Light" option, if you have "System" or "Schedule", the interface will change automatically depending on the time of day, which often causes confusion: the phone is light in the daytime, and in the evening it switches to black itself, which can be perceived as a mistake by the user.
- 🌑 Go to Settings. → Screen (or Wallpaper and Personalization).
- 🌓 Find the topic or screen mode.
- ☀️ Select the Light option instead of Dark or Car».
- 🔄 Check if the theme change schedule at the bottom of the screen is activated.
Use of control panel and quick settings
Often, the problem is solved in a couple of seconds through the quick access panel. Xiaomi smartphones have a convenient widget system that allows you to change key parameters without diving deep into the menu, you need to unlock the screen and swipe from top to bottom (or bottom to top, depending on the chosen management style).
Look for the icon that shows the theme in the curtain that opens, and it can look like a crescent, sun, or A with different backgrounds. If you don't see this icon on the first page of widgets, swipe left or right to reveal the full list of tools available, and sometimes this switch is hidden in the Quick Setting Edit menu.
If the icon is found but is inactive (gray) or unresponsive, this may indicate a temporary failure of the system interface process. Try restarting the device by holding the power button. Once turned on, check the switch again. In most cases, a simple reboot of the clears cache of the system services responsible for visualization.
- 📱 Swipe from top to bottom to open the control center.
- 🔍 Find the theme icon (sun/moon).
- 👆 Click on the icon to change the mode to light.
- ↔️ If there is no icon, swipe sideways or click "Edit».
Setup of the application “Themes” and third-party designs
In the Xiaomi ecosystem, a separate system application called Themes is responsible for the appearance. Sometimes the global settings can conflict with the parameters set within this application. If you previously installed third-party themes, they could force dark mode on all interface elements, ignoring the system settings.
To rule out this factor, open the Themes app and go to profile (the person icon in the corner). In the profile menu, find Settings. Check if the box is not worth the forced use of dark components for all applications or system windows. Resetting the theme to the standard ("Classic" or "Default") often solves the problem.
⚠️ Warning: Third-party themes downloaded from unverified sources or modified by enthusiasts may contain code errors that cause the phone to get stuck in dark mode even after the theme is removed.
Also in the Themes app, there is a section called "My Pages" or "My Topics." Make sure the standard theme from the manufacturer is active. If you see a custom theme name, use the standard one. After applying, reset the Themes app cache through the application management menu to delete temporary files that may store the old design settings.
- 🎨 Open the Topics app on the desktop.
- 👤 Go to the Profile section (user icon).
- ⚙️ Go to Settings inside the application.
- 🔄 Use the Classic or Default theme again.
Schedule management and automatic switching
One of the most insidious features is automatic time-switching: The smartphone can go dark in the evening to protect the user’s eyes and battery power (especially on screens like AMOLED). If you forget about this feature, the behavior of the phone will seem erratic (unpredictable).
Check the time settings. The section where you choose a theme (light/dark) often has a "scheduled" or "automatic" sub-item, which can be set to time slots, such as 18:00 to 6:00, in which range the phone will force the dark theme to be turned on regardless of your current actions.
Why does the topic include itself?
In addition, some scripts in the MIUI Scenarios app (or simply "Scenarios" in newer versions) can be configured to change the theme when you run certain applications or connect to a Wi-Fi network. Check the list of active automations. If you haven't set them up consciously, it's best to disable all scripts related to the display or theme for diagnosis.
| Type of setup | Where to find out. | What to check. |
|---|---|---|
| Time interval | Settings → Screen → Theme | Is the switchboard "on schedule" active? |
| Sunset and sunrise | Settings → Screen → Theme | The option "From sunset to sunrise" |
| Scripts | Annex Scenarios | Automatisms with the action "Change the topic" |
Resetting the design settings and cleaning the system cache
If simple switches don't work, there may be errors in the cache of system services, which is a common situation after major Android updates: you don't need to clear the Settings app itself, but the system components that control the interface, and it's safe and won't delete your personal photos or contacts.
Go to Settings → Applications → All apps. In the list (often hidden behind three dots in the corner), select Show Systems. Find the Themes app and System UI. For each, do the following: Clear cache and Clear data (or “Reset”). After that, the phone can reboot or the interface blinks — that’s okay.
☑️ Checklist resetting theme settings
After cleaning the data and restarting the phone will return to the factory display settings, the dark theme should disappear, and if the problem persists, this may indicate a deeper conflict in the configuration files, which requires the use of special tools or, in extreme cases, a complete reset of the device.
- 📂 Open the Settings. → Annexes → All applications.
- 👁️ Enable the display of System Applications.
- 🧹 Find Topics and click Clear Data.
- 📱 Find the System Interface and clear the cache.
Radical measures: safe regime and complete dumping
When software methods are exhausted and the dark theme continues to dominate, it is worth checking the phone for malware or conflicting applications. Upload the smartphone to Safe Mode. To do this, press the off button, and when the off icon appears on the screen, press and hold it with your finger for a few seconds until the suggestion to go to Safe Mode appears.
In Safe Mode, only system applications are running. If the theme is light and no longer "glut", then some application you installed (launcher, battery saver, blue light filter) is causing the problem. Delete the newly installed programs one by one until you find the culprit.
⚠️ Warning: Full Hard Reset will delete ALL data from your phone. Be sure to back up your photos and contacts to your Mi or Google account before starting the procedure.
Even if the theme is dark and doesn’t switch in Safe Mode, the final argument is a complete factory reset, which will put the phone back out of the box. This is done via the Settings menu → About Phone → Settings Reset → Erase all data. After this procedure, any software errors that block the theme change will be fixed.
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If the problem disappears in safe mode, the third-party application is to blame, and if it remains, you need to reset or flash it.
Once reset, the phone will offer an initial setup, and when you select a theme, you can immediately specify "Light," and then the system will use this as a baseline, and it's a guaranteed way to get rid of any software "glitch" in the interface that has accumulated over the long term.
- 🛡️ Reboot to Safe Mode for verification.
- ❌ Remove suspicious apps if everything is working in safe mode.
- 💾 Make a complete backup of the data.
- 🔄 Perform Reset to factory settings via phone menu.