How to set up screen resolution on a Xiaomi TV: from basic parameters to hidden features

Xiaomi TVs are some of the most popular devices on the market due to the combination of affordable prices and advanced technology. However, even owners of modern models Mi TV Q2, Redmi Smart TV or Mi TV P1 sometimes face the problem of incorrect display of the image: blurred contours, cropped edges or incorrect proportions, most often due to the wrong screen resolution or suboptimal zoom settings.

In this article, we will discuss how to properly adjust the resolution on a Xiaomi TV, from basic menu options to hidden features for power users. You will learn how to avoid typical errors (for example, choosing incompatible 4K @ 120 Hz mode on models without HDMI 2.1 support), how to calibrate the picture for specific content (films, games, broadcasts) and what to do if the settings are reset after a firmware update. Particular attention will be paid to the unique function of "AI Super Resolution" in the firmware of MIUI TV 3.0+, which automatically improves the quality of low-resolution video.

The instructions in the article are relevant for all modern Xiaomi TVs (2018-2026), including the Mi TV A, Mi TV ES, Redmi TV and Xiaomi TV Pro series. If your model is older, check for specific features support in specifications - some parameters (for example, ALLM for games) may be missing.

1.What resolution does your Xiaomi TV support?

Before you change the settings, it’s important to understand what settings your model physically supports. Xiaomi TVs fall into three categories by resolution:

• 📺 Full HD (1920×1080) — Budgetary models (Redmi) TV 32", Mi TV 4A). Maintain maximum 1080p @ 60 Hz.
• 🖥️ 4K UHD (3840×2160) — Most of the modern TVs (Mi) TV Q1, Redmi TV X55). Working with 4K @ 60 Hz, some with 4K @ 120 Hz (only through) HDMI 2.1).
• 🎮 8K (7680×4320) — flagship models (Mi) TV Master 8K). Support 8K @ 60 Hz and 4K @ 120 Hz.

To find out the exact resolution of your TV:

1. Open Settings → About TV → Technical specifications.
2. Look at the screen resolution bar (e.g. 3840×2160).
3. To check for 120Hz support, connect a device with HDMI 2.1 output (such as PS5 or Xbox Series X) and select the appropriate mode in the signal sources.

⚠️ Note: If you choose a permission above the supported one (e.g, 4K full HD-In the case of a TV, the image will automatically scale, which will lead to loss of clarity, and in some cases, the screen may not display the signal at all, then you will have to reset the settings through the service menu.

2. How to change the screen resolution in the settings menu

The basic resolution settings are customized via the standard menu, and the instructions are suitable for all Xiaomi TVs on the MIUI TV platform (including older versions from PatchWall):

1. Press the Settings (cog) button on the remote.
2. Go to the Display and Sound section → Screen resolution.
3. Choose one of the available modes: 🔍 Auto-TV sets determine the optimal resolution (recommended for most users). 📊 Manual selection – list of supported permissions (e.g, 3840×2160 @ 60 Hz, 1920×1080 @ 50 Hz). 🎮 Game mode - activates ALLM (Auto Low Latency Mode to reduce input delay.

OK

If you connect an external device (set-top box, computer, game console), the resolution can be customized separately for each source:

1. Connect the device to HDMI-port.
2. Press the source (or Input) on the remote.
3. Pick the right one. HDMI-port and hold OK 2 seconds – the menu “Mode” will open HDMI".
4. Choose PC (for computers) or Game (for consoles).

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If you're watching 24Hz movies, you can turn on Motion Compensation in the display settings, which smooths the transitions between frames, but can add a soap opera effect.

4. Permit problems and their solutions

Even after you've set it up properly, you might encounter artifacts in the image, and here are the most common problems and ways to fix them:

🖼️ Image clipped at the edges ("overscan")

This happens when the TV zooms in, cutting 2 to 5 percent of the edges to fix:

1. Go to Settings → Display → Screen size.
2. Choose 1:1 (Pixel Perfect) or Just Scan.
3. If you do not have an option, update the firmware (see section 5).

🔍 blurred or pixelated

Reasons:

• ❌ Incorrect color profile (e.g. YCbCr 4:2:0 instead of 4:4:4 for text).
• ❌ Low quality of the original signal (e.g. cable TV) 576i).
• ❌ Enabled upscale on the source (for example, on the Android console) TV).

Solution: Turn off all image enhancements in the TV menu (Settings → Display → Image Improvement → Off) and check the settings of the external device.

⚡ The screen flashes or the signal disappears

This is typical when trying to bring 4K @ 120Hz to a TV without HDMI 2.1.

• 🔌 Is a certified cable used? HDMI 2.1 (e.g. Ultra High Speed) HDMI).
• 🔄 Try another one. HDMI-port HDMI 1 HDMI 3 supports 120Hz).
• 📥 Update the firmware of the TV and external device.

⚠️ Note: On Xiaomi TVs 2020-2021 (e.g. Mi) TV Q1) port HDMI 2 often limited 4K @ 30Hz For 120Hz, use only ports marked HDMI 2.1 or eARC.

5. Update firmware to support new permissions

The manufacturer regularly adds support for new modes through updates, for example, in firmware. MIUI TV 3.0 for Mi TV Q2 support 1440p @ 120 Hz, and in MIUI TV 4.0 - Improved upscale for 8K-To revamp models:

1. Open Settings → About TV → Update system.
2. Click Check for updates.
3. If a new version is available, confirm installation. The TV will restart automatically.

For manual firmware installation (if automatic update does not work):

1. Download the firmware file for your model from the official Xiaomi website (section) MIUI TV ROM).
2. Copy the file (for example, mi_tv_q2_4.0.123.zip) flash-drive FAT32.
3. Connect the flash drive to USB-port.
4. Go to Settings → About TV → Update via USB and select a file.

⚠️ Warning: When manually updating, do not pull the flash drive and turn off the TV until the process is complete (the indicator on the case should stop blinking.

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After updating the firmware, reset the image settings to factory settings (Settings → Display → Reset screen settings). This will help avoid conflicts between old parameters and new features.

6. Hidden permission settings (for power users)

Xiaomi TVs have hidden settings that don't show up in the standard menu, which allow you to fine-tune resolution, color gamut and latency.

🔧 Service menu (Engineer Mode)

Warning: Changes to this menu could disrupt TV. Do this only if you understand the consequences.

1. On the remote, click sequentially: Menu → Settings → All Settings → General → About → Press 5 times on Model TV
2. The Engineer Mode menu will open.
3. Go to the Display section → HDMI Format.
4. You can manually set it here: 🔢 Color Format — RGB, YCbCr 4:4:4, 4:2:2, or 4:2:0. 🔢 HDMI Mode — PC, Game, Movie. 🔢 Overscan - Edge trimming adjustment (values from 0% to 5%).

🎛️ Settings through ADB (developer)

If you need to change the resolution software (for example, for testing), connect to TV via ADB:

1. Enable USB debugging in the TV settings (Settings → About TV → MIUI TV version → Press 7 times on the version bar).
2. Connect the TV to your computer via USB and execute the command: adb shell wm size 3840x2160 (replace the values with the desired resolution).
3. Reset to native resolution: Adb shell wm size reset