Automatic contrast adjustment on Xiaomi devices is a useful feature for most users, but not for everyone. Many people face a situation where the screen spontaneously changes the brightness and saturation of colors depending on the lighting or content, which is annoying when watching videos, reading or working with graphics, especially for owners of smartphones on MIUI and TVs with Android TVs, where autocorrection algorithms sometimes work too aggressively.
In this article, we will analyze all available ways to disable autocontrast on different Xiaomi devices – from budget Redmi to flagship Mi and other devices. POCO, and on the Mi series televisions. TV. You'll learn where these settings are hidden in the latest firmware versions, how to get around the limitations of the system, and what to do if standard methods don't work. AMOLED-screens where autocontrast can affect the matrix resource.
Why Autocontrast is a Mistake: The Real Problems of Users
At first glance, automatic contrast adjustment should improve image perception, but in practice, Xiaomi users face a number of problems:
- 🎬 Color distortion when watching video: Dark scenes suddenly turn grey and bright ones fade out, especially in high dynamic range movies (HDR).
- 📱 Instable work in applications: in graphics editors (for example, Lightroom or Photoshop Express), autocorrection interferes with accurate color reproduction.
- 🔋 Increased battery consumption: Lighting sensors and image processing algorithms are constantly active, which affects autonomy.
- 👁️ Eye fatigue: frequent microfluctuations of brightness and contrast cause discomfort with prolonged use of the device.
The problem is particularly acute on devices with AMOLED-displays (for example, Xiaomi 13 Pro or POCO F5 Pro, where autocontrast can lead to a "shimmering" effect when transitioning between light and dark scenes. TV Q2 or Mi TV A2 This function often conflicts with external signal sources (confixes, game consoles), distorting the picture.
⚠️ Note: Some Xiaomi models (e.g. Redmi Note 12 Pro)+) Turning off autocontrast can trigger the yellow-tinted Reading mode. It's not a mistake, because that's how the vision protection algorithm works. To get back to the natural colors, you'll have to manually turn off the blue light filter in the screen settings.
Method 1: Disconnect via standard MIUI settings (for smartphones)
On most Xiaomi smartphones with MIUI 12-14 firmware, autocontrast is hidden under the option “Adaptive Brightness” or “Automatic Color Adjustment”. The path to settings may vary slightly depending on the shell version, but the general scheme is as follows:
- Open the Settings → Screen.
- Slip on Brightness (or Brightness and Color Mode on new versions).
- Turn off the adaptive brightness slider (or Automatic adjustment).
- If there is a separate item Contrast or Autocontrast - translate it to the position Off.
On some models (such as the Xiaomi 12T or POCO X5 Pro), the option is hidden deeper:
Settings → Screen → Additional screen settings → Color mode → Automatic color correctionIf your version of MIUI doesn't explicitly mention "autocontrast," try turning off all automatic brightness and color adjustments -- they often work in conjunction. After the changes, restart the device so that the settings are applied correctly.
Is adaptive brightness turned off?|Manual color mode selected (not "Auto")|Are there any active energy saving profiles?|Have the settings checked in the "Security" app (section "Eyes")-->
Method 2: Disconnect on Xiaomi TVs (Mi TV, Redmi TV)
In Xiaomi TVs, autocontrast is usually disguised as Dynamic Contrast, Intelligent Picture or Mode Mode, and the algorithm is more complex than in smartphones, because it takes into account not only external lighting, but also the type of content (film, game, broadcast) to disable autocorrection:
- On the remote, click Settings (cog) → Picture (or Image).
- Select Advanced Settings (Advanced Settings).
- Turn off the following options: 🔄 Dynamic Contrast (Dynamic Contrast) 🤖 AI Picture (Intellectual Picture) 🎞️ Film Mode (Cinema Mode, if not required)
Picture
Picture Mode
Standard
User
On Android TVs 11/12 (such as Mi TV Q1E or Redmi Smart TV X2022), you may need to reset your image settings to factory settings if the options are blocked.
Settings → Device → Reset → Reset image settings⚠️ Note: On some Mi models TV (Like Mi. TV 4S 55") disabling Dynamic Contrast results in a 15-20% decrease in maximum screen brightness. This is normal behavior - this is how backlight protection works. If brightness is critical, try manually increasing Backlight in the image settings.
AMOLED|IPS LCD|VA-panel (on TVs)|I don't know.|Other-->
Method 3: Use of an engineering menu (for power users)
If standard settings do not disable autocontrast, you can try using the Engineering Mode, which is suitable for smartphones and requires caution - incorrect changes can lead to malfunctions in the screen.
Instructions for devices on Qualcomm Snapdragon (most Xiaomi, POCO, Redmi):
- Install the MTK Engineering Mode app (for MediaTek) or the Shortcut Master (for Qualcomm) from Google Play.
- In Shortcut Master, search for the Secret Codes section and run the code: ##36446337## This will open the EMM engineering menu.
- Go to Display → Auto Contrast and set the Disable value.
- Save the settings and restart the device.
For Xiaomi TVs, the engineering menu opens through a service remote or a combination of buttons on the TV itself. For example, on Mi TV 4A:
On the TV turned off, press on the remote: Menu → Volume Down → Power (hold 5 seconds)In the service menu, find the Picture section and disable the DCR (Dynamic Contrast Ratio) and ACE (Adaptive Contrast Enhancement) settings.
What to do if the engineering menu does not open?
Method 4: Disconnect via ADB (for advanced users)
If none of the previous methods worked, you can use Android Debug Bridge (ADB), which is universal for all Android devices, but requires a computer connection and basic command line knowledge.
Step-by-step:
- Turn on Developer Mode on Smartphone: Settings → About Phone → MIUI Version (Tap 7 times)
- Return to Settings → Additional → For developers and activate Debugging over USB.
- Connect the device to the PC, install ADB-Drivers and open the command line.
- Follow the commands in turn: adb devices adb shell settings list | grep contrast This will show you all the settings associated with contrast. auto_contrast_enabled or display_contrast_auto.
- Disable Autocontrast Command: Adb shell settings put global auto_contrast_enabled 0 Or (for some firmware): adb shell settings put system display_contrast_auto 0
Xiaomi TVs are similar to the process, but instead of adb devices, use:
adb connect [IP-address TV]IP-You can find the address in the settings on the TV network, and when you connect the commands, they're the same as the ones for smartphones.
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If so, ADB-Autocontrast commands returned after the reboot, add them to the autoexecute script when the system starts. To do this, use the Tasker or MacroDroid application, creating a task with the trigger "Device boot".
What to do if autocontrast does not turn off: alternative solutions
In some cases, autocontrast is hard-coded in the firmware and doesn't respond to standard shutdown methods.
- 🔄 Reset screen settings: Return all display settings to factory settings via Settings → Screen. → Resetting screen settings. Sometimes it drops hidden autocorrect flags.
- 📱 Use of third-party applications: Utilities like Display Tuner or Screen Balance allow you to block automatic changes in brightness and contrast at the system level (rights are required). ADB root).
- 🔧 Custom firmware installation: Firmware like LineageOS or Pixel Experience are devoid of aggressive Xiaomi autocorrect algorithms).
- 🛠️ Physically disabling the light sensor: The last method is to seal the sensor with an opaque film (e.g., tape) that will make the system think the lighting is not changing and turn off autocorrection. Other sensor-related functions may stop working (e.g., automatic locking when a call is made).
For Xiaomi TVs, an alternative might be to connect via an external processor (such as the NVIDIA Shield or Apple TV) that takes over image processing, ignoring the settings of the TV itself, and using Game Mode, which typically has autocontrast disabled to reduce input delay, helps.
| Model of the device | Does the standard shutdown work? | Is an ADB/root required? | Alternative methods |
|---|---|---|---|
| Xiaomi 13/13 Pro | Yes (via screen settings) | No. | Resetting color settings |
| POCO F5/F5 Pro | Partially (brightness only) | ADB for contrast | Custom firmware |
| Redmi Note 12 Pro+ | No (MIUI lock) | Root or Engineering Menu | Labeling the light sensor |
| Mi TV Q2 65" | Yes (via Picture Settings) | No. | Use of Game Mode |
| Redmi Smart TV X2022 | No (gray options) | ADB or discharge | External Media Player (Shield TV) |
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On devices with AMOLED-screens (Xiaomi) 12S Ultra, POCO F4 GT) Disabling autocontrast completely can cause pixel burnout to accelerate, in which case it is better to use manual color profile adjustment (for example, sRGB or pixel burnout). DCIP3) shutdown.
How to check if autocontrast is turned off
Often users think they've disabled autocorrect, but it's actually still running in the background.
- Black screen test: Open any image with a completely black background (e.g., Google Photos) If the screen is not completely black and grayish, autocontrast is still active (especially for AMOLED).
- Camera Check: Point the camera of another device to the Xiaomi screen and record a video with a changing picture (for example, scrolling a web page). If the recording shows brightness spikes that do not match your actions, autocorrection works.
- Application usage: Screen Test or Display Tester shows real-world screen settings, including current contrast and color temperature. Compare values for different scenes (dark/light content).
- ADB-Log (for advanced): Connect the device to the PC and execute the command: adb shell dumpsys display In the output, find the lines with auto_contrast or adaptive_brightness. If the value is true, the correction is active.
On Xiaomi TVs, the most reliable way to check is to connect it to a PC via HDMI and play a test video with gray gradients (like this one). If you see steps or uneven backlights in dark areas, the autocontrast still affects the image.