How to Change the Resolution on Xiaomi TV: All Ways (2026)

Xiaomi TVs (including the Mi series) TV, Redmi Smart TV Xiaomi TV A Pro) automatically adjust the resolution to the source signal, but sometimes manual adjustment is required. DVD-player-by-player HDMI This image can be displayed with black bars and embedded apps (such as Netflix or YouTube) can work in sub-optimal resolution. In this article, we will discuss all the available ways to change the resolution, including hidden settings for power users.

It’s important to understand that there’s no one-size-fits-all method on Xiaomi TVs: the algorithm depends on the model, the MIUI TV firmware version, and the type of device connected. We tested the instructions on the Mi TV 4S 55 (2020), Redmi Smart TV X55 (2021) and Xiaomi TV A55 (2023) models — all of which work, but the layout of menu items may vary slightly. If your model is older than 2018, some options may not be available.

Before you start settings, check the current resolution: click on the Menu remote → Settings → System → About TV → Technical information. This displays the current screen mode (e.g. 3840×2160@60Hz) and supported formats. If the option is not available, use alternative methods from this article.

1. Change of permission to HDMI-device

If you connect an external device to a Xiaomi TV (Xiaomi Mi Box, game console, computer or media player), the resolution can be changed in two ways: through the settings of the signal source or forced by the TV.

First, try setting the resolution at the signal source:

• 🎮 Game consoles (PS5, Xbox, Nintendo Switch: Go to the console display settings and select the TV-supported resolution (usually 1080p or 4K). For PS5 Path: Settings → Screen and video → Permission.
• 💻 Computers (Windows/macOS/Linux): Right-click on the desktop → Screen parameters → Choose the resolution you want. For macOS: System settings → Monitors.
• 📦 Media Players (Xiaomi Mi Box, Nvidia Shield): In the device menu, search for the Display or Screen section and set Auto or a specific value (e.g., Auto, 1920×1080).

If the source does not allow you to change the resolution or the picture is displayed incorrectly (for example, cropped at the edges), force settings on the TV itself:

1. Press Input (or Source) and select the desired HDMI-port.
2. Press Menu. → Settings → Devices and connections → HDMI-regime.
3. Choose one of the options: 🔄 Auto-TV will determine the optimal resolution (recommended for most cases). 🖥️ PC-Regime - enforces the authorization 1920×1080@60Hz (useful for PC connection). 🎬 Movie mode – optimizes the picture for movies (can reduce the resolution to 1080p even 4K-TV).

Save the changes and check the result. If the image is gone, wait 15 seconds for the TV to return to its previous settings.

💡

If after changing the resolution, the screen turned black, click on the Back remote and hold for 5 seconds - this will reset the settings. HDMI-port.

2. Setup of permission for embedded applications

Embedded services (Netflix, YouTube, Prime Video) on Xiaomi TVs usually automatically adjust the resolution to the content, but sometimes applications work in a reduced quality due to licensing restrictions (for example, Netflix can show content in 720p instead of 4K).

First, check the settings of the application itself:

• 📺 YouTube: Open the video → press ⚙️ (Settings) → Quality. → choose 2160p (if available).
• 🎬 Netflix: Go to Profile → Playback settings and set High (Premium subscription required for the 4K).
• 🎥 Prime Video: In the application settings, enable Streaming Video in the best quality.

If the app doesn’t offer manual setup, change the global settings of the TV:

1. Go to Settings → Picture → Image modes.
2. Select a profile: 🌟 Dynamic – maximum brightness and contrast (may worsen detailing). 🎨 Standard – Balance between quality and performance. 👁️ Movie – optimized for movies (may lower resolution for smoothness). 🎮 Gaming – Minimum latency, but sometimes lowers the resolution to 1080p.

AI Super Resolution

3. Manual change of permission through the service menu

Xiaomi TVs have a hidden service menu that allows you to force the screen resolution, which is suitable for power users and can cause crashes if you choose unsupported mode. On 2023 models (such as Xiaomi TV A Pro), access to the service menu is blocked - use alternative methods.

Instructions for Mi TV 4S/4X models (2018-2022):

1. Turn off the TV from the remote (Power button).
2. Press the remote sequentially: Menu → 1 → 1 → 4 → 7 You have 3 seconds to enter each digit!
3. The TV will turn on in service mode. Go to Picture → Resolution.
4. Select one of the available resolutions: Frequency Resolution Mode Suitable for 3840×2160 4K UHD 60Hz Movies, games (if TV supports) 1920×1080 Full HD 60/50Hz Old consoles, DVD 1280×720 HD 60Hz Streaming video on slow Internet 720×480 SD 60Hz Analog TV, VHS
5. Save settings and restart the TV (power button for 10 seconds).

Do not change the settings unless you are sure of their purpose.

Write down the current settings before the changes

Do not turn off the TV during settings.

After the changes, reset to factory settings (if the image is missing)-->

⚠️ Note: Incorrect settings in the service menu may result in loss of warranty or irreversible damage to the matrix. 3840×2160@120Hz on a television that only supports 60Hz, knock out HDMI-If the screen does not turn on after the changes, please contact the Xiaomi service center with the error code (displayed when downloading).

4.Optimization of resolution for analog TV (DVB-T2)

If you watch terrestrial TV through a built-in DVB-T2 tuner, Xiaomi TV can automatically stretch or crop the picture.This is because the analog signal is often broadcast at 720×576 (PAL) or 480i (NTSC) resolution, and the TV tries to scale it to 4K.

Method 1: Scaling adjustment

1. While watching TV, click on the Menu remote → Settings → Picture → Screen format.
2. Choose one of the modes: 📐 The TV will pick up the proportions (not always exactly). 🔳 4:3 – Classic format for old programs (on the sides there will be black stripes). 🔲 16:9 - wide format (can stretch the picture). 🔗 Screen size – scales without distortion (recommended).

Improvement SD-content

Method 2: Manual change of tuner resolution

• 📡 Go to Settings. → Channels → Tuner settings → Reception mode.
• Select DVB-T2 (if multiple standards are available).
• Activate High Quality Mode – this will force you to set the resolution of 1080i for the air channels.

⚠️ Warning: If the screen format changes, return the settings to Auto and check the signal quality (the tuner menu has a level indicator). A weak signal (below 60%) leads to artifacts regardless of resolution.

5. Problems with resolution after firmware update

After updating MIUI TV, some users are faced with the fact that the Xiaomi TV resets the resolution to the factory settings or starts to support not all modes. For example, after upgrading to the version of MIUI TV 3.0 on the Mi TV 4S, support for 4K@120Hz for gaming consoles may disappear.

Method 1: Reset HDMI settings

1. Go to Settings. → Devices and connections → HDMI-regime.
2. Select a problem port (e.g. HDMI 1).
3. Click Reset HDMI settings (the option may be called Reset by default).
4. Connect the device again, and the TV will override the supported permissions.

Method 2: Firmware rollback (for experienced users)

• 🔙 Download the old firmware version from the official Xiaomi Support website (select your model).
• 💾 Write the file to a flash drive in format FAT32 (file name should be update.zip).
• 🔌 Put the flash drive in. USB-TV port, then go to Settings → On TV. → Updating the system → Local Update.
• ⚠️ Risk: Firmware rollback can result in the loss of embedded application data (e.g. saved passwords on Netflix).

💡

If the audio is missing in a specific resolution after the update (e.g. 4K@60Hz), check the HDMI Audio Format settings in the Settings → Sound → Digital Sound (HDMI) menu. Set PCM instead of Auto.

6. Additional settings for gamers

If you connect a game console (PS5, Xbox Series X) or PC to a Xiaomi TV, it’s not just resolution that matters, but refresh rate (Hz), input delay (Input Lag) and VRR support (variable refresh rate). On Xiaomi TV A Pro 2023 and later, these options are available in the Game Mode section.

How to optimize TV for games:

1. Activate Game Mode: Settings → Picture → Image Modes → Game This will turn off post-processing and reduce the latency to 10-15 ms.
2. Turn it on. ALLM (Auto Low Latency Mode: Settings → System system → HDMI-regime → ALLM The TV will automatically switch to game mode when the console is detected.
3. Configure resolution and frequency: Console Recommended resolution Frequency (Hz) Notes PS5 3840×2160 60 or 120 For 120 Hz is required HDMI 2.1 Xbox Series X 3840×2160 120 Enable Dolby Vision for gaming PC (Nvidia/AMD) 2560×1440 or 3840×2160 60–144 Use G-Sync if supported
4. Turn off unnecessary effects: Settings → Picture → Additional → Disable: – Noise Reduction – Motion Improvement – Contrast Lighting

7. Reset screen settings to factory

If all attempts to change the resolution have led to a deterioration of the picture (blurring, stripes, incorrect colors), reset the screen settings, this will return the TV to factory parameters without losing installed applications.

Instructions:

1. Go to Settings → System → Reset and Recovery.
2. Select Reset Image Settings (not to be confused with a full reset!).
3. Confirm the action by entering PIN-code (default 0000 or 1234).
4. After restarting, the TV will automatically determine the optimal resolution for the connected devices.

If there is no option to reset images, perform a partial reset:

• 🔄 Go to Settings. → On TV. → Reset.
• 📺 Select Reset Image and Sound Settings (does not affect Wi-Fi and accounts).
• 🔐 Confirm using PIN-TV-box.

⚠️ Warning: Full reset (Restore factory settings) will delete all installed apps, including Netflix, YouTube and stored data. Before reset, export the list of apps: Settings → Annexes → Application management → Exports.

FAQ: Frequent questions about resolution on Xiaomi TV