How to increase the brightness of the screen on Xiaomi to the maximum: all ways

Xiaomi's smartphone screen is too dim even at maximum settings? Or does automatic brightness control work wrong, making you squint in the sun? This problem is familiar to many owners of devices on MIUI - from budget Redmi to flagship Xiaomi 14. 80% of the time, it is not hardware limitations that are to blame, but the wrong settings of the system or firmware features.

We tested all possible ways to increase brightness on 15 Xiaomi models (from Redmi Note 8 Pro to POCO F6) and identified 7 working methods, from basic to hidden.

• 🔍 Step-by-step instructions for manual and automatic brightness adjustment
• ⚙️ Hidden functions MIUI, which the manufacturer does not advertise
• ⚡ Solutions for cases where the screen is spontaneously darkened
• 📱 Table of compatibility of methods with popular models

1. Basic brightness setting through the notification curtain

The fastest way is to use a brightness slider in the notification bar, but many users don't know that it can be deployed to fine-tune:

1. Swipe your finger down from the top of the screen to open the curtain.
2. Find the badge. ☀️ Brightness (usually in the top row).
3. Touch the icon - an extended slider with a 1% adjustment step will open.
4. Move the slider to the right to the stop (value 100%).

If the slider is not in the curtain:

1. Press. ⋯ → Edit (or ⚙️ Panel settings).
2. Find the Brightness in the list and drag it to the active zone.

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On some models (such as the Xiaomi 13T), double-pressing the brightness icon in the curtain instantly switches it between 25% and 100% – this is convenient for quick response to changing lighting.

⚠️ Important: If the screen is still dim after 100% installation, the problem may be automatic adjustment (see next section) or manufacturer restrictions for the screen to be installed. AMOLED-displays (for example, on Xiaomi 12 Pro maximum brightness in manual mode is 800 nits, and in automatic mode - up to 1200 nits).

2. Turning off the automatic brightness and calibrating the illumination sensor

The automatic brightness control in MIUI often works incorrectly: the screen can spontaneously darken even in good lighting or, conversely, blind in the dark.

1. Go to Settings → Display.
2. Turn off the automatic brightness switch.
3. Manually set a comfortable value (recommended 60-80% for premises).

If you want to keep the automatic adjustment, but it doesn’t work properly:

• 🔄 Recalibrate the light sensor:

Reset the sensor settings

⚠️ Attention: POCO F5 Redmi Note 12 Pro+ post-update MIUI 14, there's a bug that causes the automatic brightness to drop by 50 percent when it's unlocked, so the solution is to roll back the firmware or use it. ADB-team (section 6).

Activation of the "Increased brightness" mode" (HBM) on AMOLED-screen

Xiaomi smartphones with AMOLED-displays (e.g., Xiaomi) 13 Ultra, Redmi K60 Pros support the regime HBM (High Brightness Mode, which temporarily increases brightness to 1000-1500 silk (vs. standard) 500-800 This mode is activated automatically in bright light, but it can be turned on forcibly:

1. Open Settings → Display → Additional settings.
2. Find the item "Accelerated brightness" (or HBM).
3. Turn on the switch. Some models will show a warning about increased power consumption.

If the HBM item is not on the menu:

• 🔧 It can be called Adaptive Brightness, Max Brightness, or Sunlight Mode.
• 📌 Nana POCO X5 Pro and Redmi. K50 regime HBM Only activate Read 2.0 (in the same display settings).

On Xiaomi 14 and 13T Pro mode mode HBM It only works when it's on. DC-dimming (in the display settings) → Protection of vision → DC-Without this option, the brightness is limited to 800 nits.

4. Customize the color profile and screen temperature

Sometimes the apparent dimness of the screen is not due to brightness, but to the wrong color temperature or profile, for example, the Vision Protection mode adds yellowness, which makes the picture appear faded.

1. Go to Settings → Display → Color mode.
2. Choose Standard (for natural colors) or Saturated (for a brighter picture).
3. Turn off the Vision Protection or set up a schedule for it.
4. In the Color Temperature option, select Cold, which visually increases the contrast.

For precise calibration:

• 🎨 Use the Individual Color Profile (available on Xiaomi flagships and POCO s MIUI 13+).
• 📊 Adjust Gamma, Contrast and Saturation manually (optimum values: gamma 2.2, contrast) +10%).

5. Reset display settings via engineering menu

If standard methods didn't work, the problem could be the light sensor or graphics driver settings that are not working, and the engineering menu (#36446337###) will help:

1. Open the Phone app and enter the code: ##36446337##
2. Go to the Light Sensor section.
3. Press Calibrate and follow the instructions on the screen.
4. Go back to the main menu and select Display → Reset.

⚠️ Warning: Do not change other options in the engineering menu unless you are sure of their purpose! For example, changing the values in the Gamma Correction can lead to incorrect color reproduction, which is then difficult to fix.

After discharge:

• 🔄 Reboot your smartphone.
• 📱 Go to Settings. → Display and reset the brightness.
• 🔍 Check the sensor, closing and opening it with your finger (brightness should change smoothly).

6.Use of ADB-commands to unlock hidden functions

Some Xiaomi models (especially with the MIUI 12-14) Manufacturer artificially limits maximum brightness in manual mode. ADB:

1. Install. ADB-PC drivers.
2. Turn on USB Debugging on your phone (Settings → About Phone → MIUI Version → 7 times click on version → return to Additional Settings → For Developers).
3. Connect your phone to your PC and type in the command line: adb shell settings put system screen_brightness_mode 0 (This turns off automatic brightness at the system level).
4. To set the brightness to the maximum (value) 255), Adb shell settings put system screen_brightness 255

To unlock hidden maximum brightness (e.g., on the Redmi K40):

adb shell settings put global hbm_enabled 1

⚠️ Attention: After use ADB Some functions (e.g., Automatic Brightness) may not work properly:

adb shell settings delete system screen_brightness_mode


adb shell settings delete system screen_brightness

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ADB-Teams are the most powerful tool to unlock hidden features, but it requires caution. A team error can cause system settings to fail.

7. Checking for hardware problems and contacting the service

If none of the methods worked, the reason could be a hardware malfunction:

• 💡 Screen illumination: on LCD-displays (e.g., Redmi) 9A) fade away LED-Check to see if there are yellow spots on the screen at maximum brightness.
• 📱 Light sensor: If it's contaminated or damaged, the automatic adjustment will not work properly.
• 🔋 Display controller: if you fall or get moisture, the brightness chip may fail, in which case the screen will be dim even in the engineering menu.

How to check the hardware serviceability:

1. Run the display test through the engineering menu (#4636# → Equipment Testing).
2. See if the brightness changes when the sensor values are forced to change (in Light Sensor).
3. Connect your phone to your PC and check if brightness is resetting when charging (this could indicate problems with the power controller).

If you suspect a malfunction, contact the service center.

• 🔧 Replacement of illumination: 1500-3000 ₽.
• 📱 Replacement of the light sensor: 800-1500 ₽.
• 🔄 Repair of the display controller: 2000-5000 ₽.

FAQ: Frequent questions about screen brightness on Xiaomi