How to change the screen resolution on the TV Xiaomi: all the ways and nuances

Changing the resolution of the screen on Xiaomi TV is a challenge faced by both beginners and experienced users. Incorrect settings can lead to blurred images, cropped edges or incorrect display of the interface, and this problem is especially relevant when connecting external devices such as game consoles, PCs or media players, where the automatically selected resolution is not always optimal.

In this article, we will discuss all the available ways to change the resolution on Xiaomi TVs (including the Mi TV 4/5 series, Redmi Smart TV, P1 and others), take into account the features of the MIUI TV firmware and Google TV, and also consider the typical errors that users make. If your TV does not support the desired resolution or the image “gets down” after the update, here you will find a solution.

Why you may need to change the screen resolution

At first glance, it seems that the factory resolution settings should be optimal, but there are several scenarios where manual adjustment becomes a necessity:

• 🎮 Connecting game consoles (PS5, Xbox, Nintendo Switch – many games support 4K, You need to manually select the right permission for the right HDR or frame-rate.
• 💻 Using a TV as a PC monitor – Windows or macOS can misdetect native resolution, leading to blurring of text.
• 📺 Problems with broadcasting IPTV streaming services (Netflix, YouTube), where the video is displayed with black stripes or cropped edges.
• 🔄 Update firmware, after which the display settings are confused (a frequent problem in models on the MIUI TV 3.0–5.0).

In addition, some Xiaomi TVs (especially the budget Redmi series) automatically lower the resolution when the HDMI signal is weak, which worsens the picture quality.

Method 1: Change resolution through basic settings

The easiest method is to use the standard TV menu, which is suitable for most models on MIUI TV (including Mi TV 4A/4S/4X, Redmi TV 70, etc.) and is relevant for firmware 2020-2026:

1. Press the Settings button on the remote.
2. Go to Settings → Display and Sound → Screen Resolution.
3. Choose one of the available values: 3840×2160 (4K) for modern models; 1920×1080 (Full HD) if 4K is not supported by a source; 1280×720 (HD) for old devices or a weak signal.

Confirm the choice and wait for the settings to be applied (the TV may briefly go out).

If the required permission is not on the list, this means that:

• 🔌 The signal source (e.g., console or PC) does not transmit supported modes;
• 📺 Your TV model does not physically support the resolution you choose (e.g. Redmi). TV 32" does not have 4K);
• 🔄 Requires firmware update (relevant for older versions) MIUI TV 2.0).

Method 2: Manual modification via engineering menu (for power users)

If the standard settings don’t work, you can use the engineering menu, which works on most Xiaomi TVs, but you need to be careful – incorrect settings can cause the image to crash.

Instructions for models on MIUI TV 3.0-6.0:

1. Open the Settings. → On TV.
2. Find the line MIUI TV version and quickly click on it 5 times in a row (with intervals of ~1 second) and the notification will appear "You became a developer".
3. Go back to the main settings menu and select a new section for developers.
4. Go to HDMI Settings → Manual resolution.
5. Enter the desired parameters in the width format×height@frequency (e.g, 3840×2160@60).

Note: on some models (e.g. Mi TV Q1 2021), the engineering menu blocks the selection of non-standard resolutions, in which case only firmware through ADB will help.

Method 3: Configure the resolution through an external device (PC, console)

Sometimes the problem is not the TV, but the signal source, for example, the NVIDIA Shield or Xbox Series X can transmit the default resolution, in which case you need to configure on the connected device:

If, after changing the settings on the external device, the TV displays the message "Unsupported signal", then:

• 🔌 Used incompatible HDMI-cable (for example, old cable) HDMI 1.4 instead 2.0/2.1);
• 📺 The TV does not support the selected refresh rate (for example, the update frequency, 4K@120Hz is only available on Mi TV Q2 2023 newer);
• 🔄 Reset required HDMI-Port (turn off the cable for 30 seconds and reconnect).

💡

If the image twitches or artifacts appear at high resolution, try to turn on Game mode (Settings → Display → Image Mode → Game) This will turn off post-processing and reduce the input delay.

Frequent problems and their solutions

Even after you set the resolution right, users are faced with common errors.

⚠️ Warning: If the screen is turned off after changing the resolution and does not turn on, wait 15 seconds - the TV must automatically return the previous settings. If this does not happen, disconnect it from the network for 1 minute (full reset).

• 🖥️ "No signal when connecting a PC – check that the right display is selected in the graphics card settings (sometimes Windows duplicates the screen instead of extending). HDMI-Port on TV (some ports are limited to Full) HD).
• 🎮 The game or video is displayed with black bars – turn on “Just Scan” or “Screen Fit” mode in the settings of the TV (Settings) → Display. → Screen size).
• 🔍 Blurred text when used as a monitor – set Windows to zoom 100% (not 125-150%) and select native TV resolution.
• 🔄 After the update, the settings are lost - reset to factory settings (Settings) → On TV. → Reset), but pre-record the current parameters.

Many Xiaomi TVs support 60Hz in 4K, but not all – 120Hz. For example, the 2021 Mi TV P1 55′′ is limited to 60Hz in 4K, whereas the 2023 Mi TV Q2 65′′ supports 120Hz via HDMI 2.1.

How to return factory permission settings

If you've been experimenting with permissions, you can always go back to the original settings.

1. Go to Settings → Display and Sound → Screen Resolution.
2. Select Auto or Recommended (name depends on the model).
3. Confirm the reset, the TV will reboot and apply factory settings.

If there is no Auto option (current for MIUI TV 1.0-2.0), do a full reset:

1. Open Settings → About TV → Reset settings.
2. Enter. PIN-code (default 0000 or 1234).
3. Confirm the reset. Attention: this will delete all user settings, including linked accounts!

After resetting, the TV will automatically determine the optimal resolution for the connected device. If the problem persists, check:

• 🔌 Cable HDMI (Replace with a certified High Speed or Ultra High Speed);
• 📺 Firmware version (Settings) → On TV. → Updating the system);
• 🔧 Signal source settings (e.g., in NVIDIA Control Panel for PC).

💡

Before resetting, be sure to record or photograph your current network settings (Wi-Fi password), your associated accounts (Mi Account, Netflix) and your audio settings, which will save you time after the reboot.

Additional Tips for Improving Image Quality

In addition to resolution, other parameters affect the quality of the image, and here's what you can adjust for better visual perception:

• 🌈 Color profile: Select BT.2020 for HDR-Content or sRGB for regular movies (Settings) → Display. → Color mode).
• 🔦 Brightness/contrast: For movies, set brightness to 45-55%, contrast to 80-90% (avoid overestimated values to avoid losing detail in the shadows).
• 🎛️ Image Modes: Use Movie for Movies, Consoles Game and Standard for Daily Watching.
• 🔊 Sound: Turn on Dolby Audio or DTS in surround sound settings (available on models with support).

For owners of Xiaomi TV with Google TV (for example, Mi TV Q2 2023) available additional options:

• 🎬 Match Content Frame Rate: Automatically adjusts frame rate for content (ideal for movies on the screen) 24p).
• 🖼️ Dolby Vision: Enable in the Display settings → Dolby Vision to support dynamic vision HDR.

If your TV supports MEMC (motion smoothing technology), turn it on for sports broadcasts, but turn it off for movies - this will reduce the effect of the soap opera.

FAQ: Answers to popular questions