How to turn off autobrightness on Xiaomi: all ways and hidden settings

Why Auto Brightness on Xiaomi is Irritating to Users – and How to Turn It Off

The automatic brightness adjustment on Xiaomi, Redmi and POCO smartphones was supposed to be a convenient feature — but often turns into a source of irritation. The screen suddenly dims on a sunny day, blinds your eyes at night, and the brightness slider in the notification panel is stubbornly reset to “auto.” The manufacturer hides direct settings, and in new versions of MIUI 14/15, the algorithms have become even more aggressive.

This article provides 5 proven ways to disable autobrightness (including hidden ones), compare their effectiveness across models (Xiaomi 13/14, Redmi Note 12/13, POCO F5/X5), and solve typical problems: when settings are reset after a reboot or update. A special section focuses on the unique MIUI 15 bug, in which abrightness is activated itself after connecting to a charge - and how to fix it without resetting the phone.

Important: The methods work on all current firmware (Android 12-14), but older models (Xiaomi Mi 9, Redmi Note 8) may need an alternative approach, which we will also consider. If you have already tried to turn off autobrightness through standard settings and this did not work, go straight to the section on hidden settings.

Method 1: Standard shutdown via MIUI settings

Let's start with the official method, which should work on 80% of devices, but even here there are pitfalls: depending on the version of MIUI, the path to settings may differ, and on some models (POCO X3 Pro, Redmi 10C) the option is hidden deeper.

Instructions:

1. Open the Settings → Display.
2. Slip the Brightness slider (don't move it!).
3. In the window that opens, turn off the "Automatic brightness" switch.
4. To save the changes, restart the phone (required!).

⚠️ Attention: MIUI 15, after you turn off the autobrightness, you may get a notification saying, "Recommended to turn on adaptive brightness to save charge." It can be ignored, but if you tap it, the settings will reset! → Notifications → System notifications.

Automatic brightness switch switch switch switched off"|The brightness slider is fixed on the selected value|After restarting, the settings are maintained|No notifications on recommendation to turn on autobrightness-->

If you do this, you still change the brightness, then you go to the next way, which means that your device has hidden MIUI algorithms activated that ignore user settings.

Method 2: Disconnection through the hidden menu "Laboratory" MIUI"

Xiaomi’s firmware has a hidden feature testing menu called the MIUI Lab (or MIUI Lab) that can turn off autobrightness at the system level even if the standard method doesn’t work, a technique that is particularly relevant for Xiaomi 12/13/14 and Redmi Note 11/12.

Step-by-step:

1. Open the Phone app and enter the combination: ##6484##.
2. The MIUI Lab menu will appear (if not, try the ##64663## combination for older models).
3. Go to the Display section → Auto Brightness.
4. Turn off all switches associated with adaptive brightness and light sensor calibration.
5. Save the changes and restart the phone.

⚠️ Note: Do not change other parameters in MIUI Lab — this can cause sensor or camera malfunctions. If the screen becomes too dim or bright after the changes, return the default settings via Reset to the same menu.

This method is effective in 95% of cases, but on some devices (POCO F4 GT, Xiaomi 11T) Autobrightness may turn on again after the system update. To avoid this, use the method of using the system. ADB.

Method 3: Disconnect via ADB (for power users)

If previous methods have failed, Android-level shutdown via ADB (Android Debug Bridge) is the most reliable way, but requires connecting the phone to a computer, and is suitable for all Xiaomi models, including the Redmi 9A and POCO M4 Pro.

What you need:

• 🖥️ Computer with Windows/macOS/Linux
• 📱 USB-cable (preferably original)
• 🔧 Installed drivers Xiaomi and ADB (guideline)

Instructions:

1. Turn on Settings → About Phone → MIUI version (tap 7 times to activate Developer Mode).
2. Return to Settings → Additional → For developers and enable USB debugging.
3. Connect the phone to your computer and select File Transfer mode.
4. Download ADB Tools and unpack the archive.
5. Open the command line (Windows) or the terminal (macOS/Linux) file ADB and type: adb devices If the phone is detected, do: adb shell settings put system screen_brightness_mode 0

⚠️ Note: After completing the command, do not turn off USB-cable immediately — wait 10 seconds for the settings to apply. If the screen gets too dim, set the brightness manually through the slider.

adb shell settings put global auto_brightness_enabled 0

This will block the automatic activation of the feature at the level of global settings Android.-->

This method is guaranteed to turn off autobrightness, but has a minus: after resetting the phone or updating MIUI via OTA, the settings can reset. To avoid this, use the Magisk module (for rooted devices only).

Method 4: Using the Magisk module (for rooted devices)

If your Xiaomi is rooted (has superuser rights), the most reliable way is to install a dedicated Disable Auto Brightness module via Magisk.

Step-by-step:

1. Install Magisk Manager (if not already installed).
2. Download the Disable Auto Brightness module (check compatibility with your Android version!).
3. In Magisk, go to Modules → Install from storage and select the downloaded file.
4. Reboot the phone.

Advantages of the method:

• ✅ It works even after the updates. MIUI
• ✅ Not reset when resetting settings
• ✅ Compatible with all models Xiaomi/Redmi/POCO

⚠️ Note: Installing modules through Magisk can lead to a failure of SafetyNet, which will stop working banking applications (Sberbank, Tinkoff) and some games (Pokémon GO, Before installing, check SafetyNet status through the SafetyNet Test application.

Yeah, for fine-tuning.|Yes, but only for specific tasks.|No, I'm afraid I'll lose my guarantee.|No, I don't see the point.|I don't know what it is.-->

Method 5: Alternative solutions for older models

If you have a Xiaomi Mi A1/A2 (with pure Android One) or outdated models like the Redmi 4X/Note 5, standard methods may not work due to the features of the firmware.

1. The Brightness Control app from Google Play allows you to capture brightness at the system level, bypassing the limitations of MIUI.
2. Custom firmware (such as LineageOS or Pixel Experience) on which the autobrightness is turned off through standard Android settings.
3. Firmware rollback to an older version of MIUI (for example, from 12 to 11), where there are fewer bugs with autobrightness.

For Android 8-10 models (e.g. Xiaomi Mi 8, Redmi 6), sometimes resetting the light sensor settings helps:

1. Go to Settings → System → Resetting settings.
2. Select Sensor Reset (not to be confused with a full reset!).
3. After rebooting, calibrate the sensor manually in the Settings menu → Display → Autobrightness → Calibration.

⚠️ Attention: On Xiaomi Mi A3 and other models with AMOLED-In this case, it is recommended to use semi-automatic mode: set fixed brightness at 40-60% and turn off only adaptive algorithms through the ADB.

Comparison of methods: which one to choose for your model

Not all methods are equally effective for different devices, and the table below provides recommendations depending on the model and version of MIUI:

If your model is not in the table, focus on the MIUI and Android version. For firmware identification, go to Settings → About Phone → MIUI version and Android version.

💡

On Xiaomi 14 Ultra and other 2026 flagships, autobrightness is integrated into the cooling system. A complete shutdown can overheat the screen at high loads (games, video shooting), in which case it is better to use partial shutdown via ADB, leaving minimal adaptation.

Typical problems and their solutions

Even after the autobrightness is turned off, users are faced with unexpected bugs, and here are the most common and ways to fix them:

Problem 1: The brightness is reset after connecting to the charging.

• 🔌 Solution: Disable in Settings → Battery → Battery settings option "Optimize charging".

Problem 2: Autobrightness turns on itself after the MIUI update.

• 🔄 Solution: Repeat the disconnection through ADB and additionally execute the command: adb shell cmd device_config put brightness_device_config auto_brightness_available false

Problem 3: The brightness slider in the notification panel does not respond to changes.

• 📱 Solution: Clear the Settings app cache (Settings) → Annexes → Application management → Settings → Warehouse → Clear the cache).

Problem 4: The screen became too dim after the autobrightness turned off.

• 🌓 Solution: Manually set the brightness to 70-80% and calibrate the light sensor in Settings → Display. → Autobrightness → Calibration (even if the function is disabled, the calibration retains the sensor settings).

⚠️ Attention: On Xiaomi with AMOLED-screens (Xiaomi 13 Pro, Redmi) K50) When you manually adjust the brightness, you can have a flickering effect at low levels (below 20%). DC Dimming. To eliminate flickering, set the brightness to at least 30% or turn on Settings. → Display. → Reading mode.

FAQ: Frequent questions about autobrightness on Xiaomi