How to turn off screen dimming on Xiaomi phone: all ways

Automatic screen dimming on Xiaomi smartphones is one of the most annoying features for many users. The default MIUI system reduces the brightness of the display when battery is low, in low light conditions or when energy saving mode is activated. For some, this is convenient, but most owners of Redmi, POCO or Mi want to completely turn off the dimming so that the screen always remains as bright as possible.

The problem is that Xiaomi has hidden these settings in different menus, and newer versions of MIUI 13/14 have changed the algorithms, and in this article we’ll look at all the ways you can do it, from standard settings to hidden developer settings, learn how to remove dimming when you’re low-charged, in the dark, or when you’re using specific applications, and find out why, after a system update, the function can turn on itself even if you’ve disabled it before.

Why Xiaomi’s screen is darkening itself: the main reasons

Before you turn off the function, it is important to understand what causes the dimming. At Xiaomi, several mechanisms are responsible for this:

• 🔋 Power saving mode – activated when the battery is lower 15-20%, Forcefully reduces brightness and performance.
• 🌙 Adaptive brightness – uses a light sensor to automatically adjust the screen’s backlight.
• 📱 Application-specific optimization – some programs (like YouTube or Chrome) may force the screen to darken.
• 🕒 Night mode – not only changes the color temperature, but also sometimes reduces the brightness.
• 🔄 Automatic settings MIUI — The system can adjust the brightness based on your habits.

The POCO F5, Redmi Note 12 and other modern models also have a Smart Brightness feature that analyzes the user's surroundings and behavior, and it can ignore manual brightness settings if it considers them "suboptimal," which often causes spontaneous dimming even at 100% charge.

⚠️ Note: Some firmware (especially global versions) MIUI Europe) Adaptive brightness may be linked to Google services, and if you turn it off in Xiaomi’s settings, but it will continue to work, check your Google account settings in the Services section. → Adaptive brightness.

Method 1: Turning off adaptive brightness in standard settings

The most obvious method is to deactivate automatic brightness control through the settings menu, which works on all Xiaomi smartphones regardless of the model, but may vary depending on the version of MIUI.

Instructions for MIUI 12/13/14:

1. Open the settings (cog icon).
2. Go to the Display section.
3. Find Adaptive Brightness (or Auto Brightness on older versions).
4. Move the slider to the off position.
5. For reliability, also turn off the Smart Brightness (if any).

On some models (such as the Xiaomi 13 Lite), the path may be slightly different:

Settings → Screen → Brightness → Automatic brightness adjustment (disable)

Adaptive brightness turned off in display settings

Smart Brightness (Smart Brightness) Deactivated

The brightness slider is manually fixed at the maximum level

Rebooting the phone is done to apply the changes-->

⚠️ Warning: After the adaptive brightness is turned off, the screen may appear too bright in the dark. This is normal - now the brightness is fixed at the level you set manually. If you want to save battery power, reduce the brightness to a comfortable level (for example, reduce the brightness to a comfortable level, 60-70%).

Method 2: Deactivation of the energy saving mode

One of the main reasons for the screen dimming is the power saving mode, which is activated automatically when the battery is low. On Xiaomi, it works more aggressively than on other Android smartphones: not only limits performance, but also forcibly reduces brightness to 30-50%.

To turn off this behavior:

• 🔋 Go to Settings. → Battery.
• 📊 Select Power Saving Mode (or Battery and Performance on New Versions).
• 🔄 Set Performance or Balanced (but not Energy Saving).
• ⚡ Turn off the option to automatically turn on the energy saving mode.

On the POCO X5 Pro and other devices with MIUI 14, the path can look like this:

Settings → Battery and Performance → Modes → Select “Performance”

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If the screen still dims at 15% charge after the power saving is turned off, check the settings of specific applications. Some programs (such as Facebook or TikTok) have their own energy saving algorithms that can override system parameters.

Method 3: Disabling dimming through developer parameters

If standard methods don't work, you'll have to use a hidden setting for developers, and you can turn off the forced dimming at the system level, but be careful, because the wrong changes can cause failures.

How to turn on the developer mode and turn off the dimming:

1. Activate Developer Mode: Go to Settings → About Phone. Click 7 times on the MIUI Version line (you will be notified "You've become a developer").

For developers

• Turn off automatic brightness control (if any).
• Turn off adaptive brightness.
• Minimum screen brightness – set the value of 0.
• Restart your phone to apply the changes.

If the dimming is related to a particular app (e.g. Google Maps darkens the screen in navigation), find its batch name and turn off optimization:

adb shell dumpsys deviceidle whitelist +com.google.android.apps.maps

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ADB-commands are reset once the phone is restarted. To keep the changes constant, use the task in Tasker or create a script to automatically execute commands when you start the system.

Method 5: Verify and reset specific application settings

Sometimes, it's not the system settings that cause the screen to darken, but the individual settings of the apps, for example, YouTube can force the brightness to decrease while watching videos, and Chrome can force the brightness to decrease in dark mode.

How to check and correct:

• 📱 Open the Settings. → Annexes → Application management.
• 🔍 Select an app that causes blackouts (such as Instagram).
• ⚙️ Go to Permits. → Additionally. → Optimizing the battery.
• 🔄 Turn off the Allow Optimization (or Energy Saving) option).
• 🗑️ Clear the app cache (sometimes helps to reset "sticky" settings).