How to adjust the brightness on the Xiaomi TV: all the ways and hidden settings

Why the right brightness setting is important for your Xiaomi TV

Screen brightness is a key parameter that affects not only viewing comfort, but also the health of your eyes, as well as the life of the TV matrix. Too high brightness in a dark room causes eye fatigue and can lead to headaches, and low brightness causes you to strain your eyes while trying to see the details of the image. Xiaomi offers several ways to adjust this parameter, but not all of them are obvious to users.

In this article, we will discuss all available methods, from basic (via the remote and settings menu) to hidden (via the engineering menu and the Mi Home app). Particular attention will be paid to the models of Mi TV 4S/4A/5X, Redmi Smart TV X and Xiaomi TV Q2/Q1E, as they have nuances in the control of backlights, and you will learn how to automate the change in brightness depending on the time of day and lighting in the room.

If you notice that the picture on the screen has become dim or, conversely, blinds your eyes, do not rush to blame the manufacturer — in 90% of cases, the problem is solved by correct calibration.

Method 1: Fast brightness adjustment from the remote control

The most obvious and quick way is to use the buttons on the remote control. Most Xiaomi TV remotes (including Mi Remote and Redmi Remote models) have a dedicated button to adjust the backlight:

• 🔹 Press the button. ⚡ (Sun or lightning icon on the remote – it is usually located next to the volume buttons.
• 🔹 Hold it to open the Quick Settings Panel, where brightness is controlled by a slider.
• 🔹 On some remotes (for example, for Mi). TV Q1 75) the brightness changes with the buttons ▲/▼ combined ⚡.

If the button ⚡ Not available (relevant to older remotes or Redmi Smart models) TV A Series, use an alternative path:

1. Press Menu (or Home on new remotes).
2. Select the Settings icon (cog).
3. Go to Settings → Display and sound → Brightness.

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If the remote doesn’t respond to pressing, check the batteries or restart the TV by holding the power button for 10 seconds.

Important: On OLED-matrix TVs (e.g. Xiaomi TV Master OLED), brightness control affects pixel life, with a recommended range of 50-70% for everyday use.

Method 2: Fine tuning through the TV menu

For more accurate brightness calibration, go to the advanced display settings, and here you will find not only the brightness slider, but also additional parameters that affect the perception of the image:

1. Open the settings → Display and sound → Picture.
2. Select the image mode: 🌞 Standard – balance of brightness and contrast. 🎬 Movies – Dimmed Brightness for Watching Movies. 💡 Dynamic - maximum brightness (not recommended for long-term use). 👓 Eco-optimized for energy saving.

"Extra"

• 🔦 Backlight – Physical brightness LED-lighting.
• 🎨 Contrast – the ratio of light and dark areas.
• 🌓 Gamma – brightness curve (value 2.2 is optimal for most content).

Warning: The light sensor may falsely fire if the TV is facing a window or artificial light source (e.g., chandeliers with adjustable color temperature), in such cases it is better to turn off the auto-control.

Yes, very handy | Yes, but sometimes I turn it off |No, I prefer manual setting |I don't know if my model has this feature |I haven't tried-->

On models without a built-in sensor (for example, Redmi Smart TV A55), you can use external solutions:

• 💡 Connect Xiaomi Smart Lamp (like Yeelight) and sync it to your TV via Mi Home.
• 📱 Use geolocation in the Mi Home app to automatically reduce brightness in the evening.

Method 4: Adjustment through the Mi Home app (for smart TVs)

If your TV is connected to the Xiaomi ecosystem (via your Mi Account), you can control the brightness from your smartphone, which is convenient if the remote is lost or the batteries are dead.

1. Install the Mi Home app (available for Android and iOS).
2. Add TV to the app (if not added): 📱 Press «+» → «Add the device». 🔍 Select the category "Televisions». 🔗 Follow the instructions on the screen (Wi-Fi and Mi Account required).

• 📺 Go to the TV management page.
• 🔧 Press "Settings» → «Display».
• ☀️ Adjust brightness with a slider or voice (if supported).

Limitations: Not all models support remote brightness control. For example, in Redmi Smart TV X, you can only turn your TV on/off and change volume via Mi Home. For a full list of supported features, see the compatibility table on Xiaomi's website.

Method 5: Voice Brightness Control (Alice, Google Assistant, XiaoAI)

Xiaomi TVs with voice assistants allow you to change brightness without a remote.

• 🎤 On the remote, press and hold the microphone button (or say “Hello, XiaoAI»).
• 🗣️ Say one of the commands: “Set brightness by 50 percent” “Make the screen brighter” “Reduce the backlight” “Enable the night mode” (activates a dark theme and reduces the brightness)

Voice control requires:

• 📶 Stable Internet connection (commands are handled by Xiaomi cloud service).
• 🔊 The microphone on the remote or the TV itself (check in Settings) → Voice assistant).
• 🌐 The region of the Mi Account must match the region of the TV (otherwise, the voice assistant may not understand the commands).

Tip: If the voice assistant does not recognize commands in Russian, switch the language to Settings → Language and Region → Voice input.

Method 6: Resetting brightness settings to factory

If after experimenting with the settings, the picture became unsatisfactory (for example, too dark or with distorted colors), return the factory parameters:

1. Open the settings → Display and sound → Picture.
2. Scroll down and select “Reset Image Settings”.
3. Confirm the action (it may be necessary to enter) PIN-If there is parental control).

Warning: Resetting will return not only brightness, but all other parameters of the image (contrast, saturation, sharpness) to factory values. If you previously calibrated the TV for specific content (for example, for games or movies), you will have to adjust everything again.

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Before reset, take a picture of the current screen settings – this will help you quickly restore them after resetting.

If the reset has not helped and the brightness is still not regulated, the problem may be:

• 🔌 Illumination malfunctions (diagnosis is required in the service center).
• 🖥️ Firmware failure (try to update the software to Settings) → On TV. → Updating the system).
• 🎛️ Damage to the matrix plume (typical for televisions after falling or hitting).

Diagnostics of brightness problems

If the brightness does not change or behaves inadequately (it jumps independently, does not respond to the remote), perform a check:

1. Check the remote: 🔋 Replace the batteries. 📸 Take a picture of the remote on your phone’s camera – if the IR transmitter is working, you’ll see a flicker. 🔄 Restart the TV (turn off the network for 30 seconds).
2. Matrix test: 🎮 Run a test video with a uniform color (e.g., a black or white screen on YouTube). 👀 Check if there are spots or backlights on the edges on the screen - this is a sign of a malfunction LED-lighting.

Firmware check:

• 📥 Update to the latest version (relevant to models with the MIUI TV).
• 🔧 If the problem remains after the update, reset to factory settings (Settings) → On TV. → Data resetting).