The incorrectly tuned brightness on Xiaomi TV can ruin the viewing experience: too dim the screen tires the eyes, and too bright – distorts the colors and reduces the life of the matrix. This problem is especially relevant for owners of Mi TV A Pro, Redmi Smart TV and Xiaomi TV Q2 models, where factory settings are often sharpened for demonstration mode in stores, rather than for home use.
In this article, you will find step-by-step instructions for manual and automatic brightness adjustment, tips for calibrating for different content (movies, games, sports), as well as solutions to problems - for example, when brightness is reset after an update or not retained. We took into account the features of the MIUI TV firmware and Google TV, which are used in modern Xiaomi models.
1. Quick brightness adjustment via remote
The easiest way to change brightness is to use hotkeys on the Xiaomi remote, which works on all models, including the outdated Mi TV 3S and the new Xiaomi TV Q2 75.
Press the Settings button on the remote, then select Display and Sound → Brightness. Most firmware has a 0% to 100% slider available. The optimal value for a home theater is 40-60%, for brightly lit rooms is 70-85%.
- 🔹 Quick Settings button: On some remotes (e.g. Redmi) TV A55) The brightness is adjusted through a menu that opens with a long press of the Home button.
- 🌓 Adaptive Brightness Mode: If this option is active (included in Settings) → Screen. → Adaptive brightness, the TV will automatically adjust the lighting to the room light. Turn it off for manual adjustment.
- ⚡ Energy Saving: In Google Models TV (for example, Xiaomi TV A2 43) the brightness may be limited to the energy saving mode. → System system → Energy conservation.
Important: OLED-Xiaomi TVs (e.g. Mi TVs) TV Master OLED) High brightness accelerates pixel burnout, and it is recommended that they should not exceed 65% for daily use.
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If the brightness slider is blocked, check if Child Mode is activated (Settings → Parental Control) and it limits some parameters to change.
2. Advanced settings: calibration for content
Factory presets (Standard, Movie, Dynamic) rarely take into account the features of your room or preferences.
Settings → Display and sound → Picture → Additional settingsHere are available parameters that directly affect the perceived brightness:
| Parameter | Recommended value | What do you need? |
|---|---|---|
| Contrast | 80–90% | It's a big difference between dark and light, and it eats away at the details in the shadows. |
| Illumination | 30–50% | Regulates intensity LED-lighting (not to be confused with brightness!) affects the uniformity of the glow. |
| gamma | 2.2–2.4 | Corrects the brightness curve. 2.2 is optimal for dark rooms. |
| Local blackout | Medium/High | Improves black color by selective dimming of backlight zones, available on Full Array LED models. |
For movies and TV shows, reduce Contrast to 75% and activate Mode Mode (if any) to reduce the aggressive post-processing that Xiaomi adds by default. For games, on the contrary, increase Backlight to 60-70% and turn off Flicker Reduction (may add input delay).
- Brightness: 45-55%
Contrast: 75-80%
- Gamma 2.2:
- Local dimming: Medium
- Color temperature: Warm (6500K)-->
3.Brightness problems: why the settings are not saved
A frequent complaint of Xiaomi TV users is that brightness is reset after switching off or switching the signal source.
- 🔄 Auto-Update: After installing the new version MIUI TV You can reset your user settings. Check the version in Settings. → About the TV and if necessary, reconfigure the brightness.
- 📶 Conflict with HDMI-Devices: Some consoles (e.g. Xiaomi Mi Box) or game consoles override screen settings. HDMI-Port settings (Port settings) → Connections → HDMI) select Mode PC car.
- 🛠️ Calibration failure: If the image remains too dark or bright after manual settings, reset the image settings to factory settings (Settings) → Display and sound → Resetting image settings).
Critical error in MIUI TV firmware 3.0-3.2 (2022): When activated, the "Energy Saving" mode was fixed at 30% brightness regardless of user settings. Corrected in version 3.3.1. If your TV has recently updated, check for updates.
How do I check the firmware version?
Automatic adjustment: light sensor
Xiaomi premium TVs (such as the Mi TV Master or Xiaomi TV Q2 65) are equipped with an ambient light sensor that allows you to automatically adjust the brightness depending on the time of day.
- Go to Settings → Display and Sound → Adaptive Brightness.
- Activate the switch and adjust the sensitivity (medium recommended).
- In the Schedule section, specify time intervals for day/night modes.
🔍 How does the algorithm work:
The sensor analyzes the light in the room and adjusts not only the brightness, but also the color temperature (cooler in the day, warm in the evening). MIUI TV 4.0+ delay reduced to 2 seconds.
⚠️ Attention: Light sensor may conflict with Auto Brightness by content (available in Xiaomi) TV If the picture flashes when the scenes in the movie change, turn off one of these options.
5 Brightness for different signal sources
Brightness settings in Xiaomi TV may differ for different inputs: HDMI, USB, TV-Tuner or embedded apps (Netflix, YouTube) This is because the TV saves separate profiles for each source.
To adjust the brightness for a specific input:
- Connect your device (e.g. Xiaomi Mi Stick to the HDMI 1 port).
- Open Settings → Display and sound → Image modes.
- Select a profile (such as HDMI 1) and adjust the brightness separately.
🎮 For gamers:
When connecting PlayStation 5 or Xbox Series X to Xiaomi TV activate in the settings HDMI-The port mode is Game Mode and set the brightness to 60-70%. This will reduce the input lag (input lag) with the ~20 ms to ~10ms.
| Signal source | Recommended brightness | Additional settings |
|---|---|---|
| TV-tuner (on-air TV) | 50–60% | Activate Noise Reduction for Analog Channels. |
| HDMI (Console, console) | 60–75% | Turn off motion processing to lower lags. |
| Built-in applications | 45–55% | Enable HDR for Netflix/Disney+ (if supported). |
| USB (films, photos) | 40–50% | Use the Mode of the Movie for correct color reproduction. |
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Brightness settings for HDMI-ports only apply to the current resolution. 4K on 1080p, To avoid this, fix the resolution in the settings of the external device (for example, in the NVIDIA Shield or PS5).
6. Resetting brightness settings to factory
If after experimenting with the settings, the picture became unsatisfactory (for example, artifacts or unbalanced colors appeared), reset the image parameters. This does not affect other settings of the TV (Wi-Fi, applications, etc.).
Instructions:
- Open the settings → Display and sound → Picture.
- Scroll down and select Reset Image Settings.
- Confirm the action (it may be necessary to enter) PIN-Parental control is included if parental control is enabled).
After resetting, the TV will return to the factory profile Standard with a brightness of 50%, contrast of 85% and color temperature of 6500K. For models with Dolby Vision (for example, Xiaomi TV Q2), HDR settings will also reset.
⚠️ Note: On Xiaomi TVs 2020-2021 release (for example, Mi) TV 4S 55") resetting the image settings sometimes led to the disappearance of the item Local dimming in the menu. To return it, reboot the TV by holding the Power button on the remote for 10 seconds.
External brightness calibration devices
For professional settings (for example, if you use the TV as a monitor for video editing), you will need additional tools:
- 📊 Calibrators: Devices like the X-Rite i1Display Pro or Datacolor SpyderX measures the actual brightness and color temperature. USB (required OTG-adapter TV).
- 🎛️ Test templates: Free calibration kits (like Disney) WOW Spears & Munsil will help you visually assess white balance and black levels.
- 🖥️ Software for setting up: CalMAN applications (for Windows/macOS) enable ICC-profiles, but require the TV to be connected to the PC via HDMI.
💡 Budgetary option:
If you don't have a calibrator, use YouTube videos with test patterns (like this one).
- On a black background, all gradations of gray were visible (from 1% to 5%).
- White does not cut the eyes (the brightness level is ~200 cd/m2 for rooms with normal light).