How to Duplicate a Screen from Xiaomi Phone to a TV: All Ways With Instructions

Broadcasting a smartphone screen to a large TV screen is a convenient way to show photos to friends, play mobile games on a wide display, or even make a presentation without a laptop. Owners of Xiaomi, Redmi and Poco devices can use several built-in and third-party methods of screen duplication, but not all of them are equally stable or supported by specific TV models. In this article, we will discuss all the current ways of transmitting images – from wireless protocols to wired adapters – and also explain how to avoid common errors: delays, connection breaks and sound problems.

If you’ve never connected your phone to a TV before, start by checking compatibility: modern Mi TVs (A2, P1, Q2 and later) support most out-of-the-box methods, and older models may require additional hardware. The smartphone generation is also important: for example, the Xiaomi 12 Pro or Redmi Note 11 are equipped with Miracast and Google Cast, whereas budget devices like the Poco M4 are sometimes limited to basic features.

Before you start setting up, make sure both devices are connected to the same Wi-Fi network (for wireless methods) or you have the necessary cables/adapters (for wired connection).If the TV is not from Xiaomi, check its documentation for DLNA, AirPlay or Miracast support - this will save time.

1. Wireless duplication via Miracast (built-in method)

Miracast is a wireless screen transmission standard supported by most modern Xiaomi smartphones and TVs on Android TV or with Screen Mirroring. The main advantage of the method is the lack of need for the Internet: devices connect directly over Wi-Fi Direct.

To activate duplication:

1. On TV: open the Settings menu → Connections → Screen Mirroring (or Screen Mirroring). On Mi TV, the path can look like Settings → Devices → Wireless projection.
2. On your smartphone: lower the notification curtain and find the Wireless Display (or Cast) tile. If it's not there, go to Settings → Connections and Sharing → Wireless Display.
3. Select your TV name from the list of available devices. Confirm the connection on both screens.

⚠️ Note: Some Xiaomi models (e.g. Redmi) 9A) Miracast can be hidden. To activate it, go to Settings. → About the phone and 5 times click on the version MIUI, Then back to the settings. → Additionally. → Laboratory functions turn on the wireless display.

The speed depends on the MIUI version:

• 🔹 MIUI 12/13/14: Miracast and Google Cast support out of the box, minimal delays.
• 🔹 MIUI 11 and older: sound problems may be possible – you will need to separately enable audio transmission in the mirroring settings.
• 🔹 Android 10 and below: There may be no support 1080p — The image will be broadcast in 720p.

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If the screen on the TV is displayed with black boxes, change the aspect ratio in the Miracast settings on the smartphone: select the Fit under the screen mode instead of Save proportions.

2. Use of Google Cast (Chromecast or Built-in)

If your TV supports Google Cast (such as Mi TV 4S, Mi TV Q1 or any Android TV), you can duplicate the screen through the Google Home app or the built-in Cast feature.This method is convenient for streaming videos from YouTube, Netflix or Google Photos, but you will need to activate the Transmit screen mode to fully duplicate the screen.

Instructions:

1. Make sure your phone and TV are connected to the same Wi-Fi network.
2. On your smartphone, open the Google Home app, click on your TV icon → Transmit screen (or Cast my screen).
3. Confirm the broadcast, and a warning about possible delay will appear on the screen.

⚠️ Note: When using Google Cast to duplicate the entire screen (not just video), audio can be transmitted with a delay of up to 2 seconds. HDMI.

Compare Miracast and Google Cast:

3. Wired connection via HDMI (most stable)

For minimal latency and maximum image quality, it is better to use a wired connection via a USB-C/HDMI adapter or Micro-USB/HDMI (depending on your smartphone connector), which is suitable for gaming, watching 4K movies or working with graphics applications.

What you need:

• 🔌 adapter USB-C → HDMI (Xiaomi 11/12/13, Redmi Note 10/11) or micro-USB → HDMI (old-model).
• 📺 Cable HDMI 2.0 (support 4K@60Hz).
• ⚡ Power supply for adapter (some models require additional power supply) USB-feed-in).

Step-by-step:

1. Connect the adapter to the smartphone, and the HDMI cable to the adapter and TV.
2. On your TV, select the HDMI signal source (usually the Source or Input button on the remote).
3. The smartphone can automatically start DeX mode (on models with support) or standard screen duplication. If the image does not appear, go to Settings → Display → HDMI mode.

Important: Xiaomi smartphones on Snapdragon 8 Gen 1/2 processors (e.g. Xiaomi 12 Pro, 13 Ultra) support 4K@60Hz output via HDMI, whereas budget models (e.g. Redmi 10A) are limited to 1080p@30Hz.

Duplicate over Wi-Fi Direct (for older TVs)

If your TV doesn’t support Miracast or Google Cast, but it does have Wi-Fi Direct, you can connect directly to it from your smartphone, a method that works on most Samsung, LG, and some Sony models released before 2018.

How to set up:

1. On your TV, activate Wi-Fi Direct in the network settings menu. Remember the network name and password (if required).
2. On Xiaomi smartphone go to Settings → Wi-Fi → Additional → Wi-Fi Direct.
3. Select the TV network and connect. After a successful connection, activate the screen broadcast through the Wireless Display.

⚠️ Note: When using Wi-Fi Direct, your smartphone will lose internet access because it will be connected directly to your TV. To avoid this, turn on the Share Internet feature on your TV (if supported).

Advantages and disadvantages of the method:

• ✅ It works without a router.
• ✅ Supported by old TV sets.
• ❌ Low resolution (usually) 720p).
• ❌ Possible breaks of connection at a distance of more than 5 meters.

Annexes for duplication (alternative methods)

If the built-in features don't work, you can use third-party apps, the most popular ones being:

• 📱 ApowerMirror: Supports duplication over Wi-Fi or USB, There is a function of managing the phone with TV.
• 🎮 TeamViewer QuickSupport: More suitable for technical support, but can stream the screen.
• 📺 LocalCast: specializes in transferring media files, but can duplicate the screen on Chromecast and DLNA-device.

Instructions for ApowerMirror:

1. Install the app on your smartphone and TV (if it’s Android TV).
2. Run ApowerMirror on both devices and select Phone Screen Mirroring mode.
3. Connect via Wi-Fi or USB-Debugging (for minimum delays).

⚠️ Note: When using third-party applications to duplicate screens over the Internet (not a local network), your data may be transmitted through the developer's servers. Avoid entering passwords or opening sensitive information in such sessions.

6.Duplicate on Mi TV via Mi Home (exclusive to Xiaomi ecosystem)

If you have a Mi TV and a Xiaomi smartphone, you can use the Mi Home app to stream the screen quickly, which is optimized for Xiaomi devices and provides minimal latency.

Step-by-step:

1. Install the Mi Home app on your smartphone and log in to one Xiaomi account on both devices.
2. Add TV to the app: Add device → TV → Mi TV.
3. After connecting, click on the TV icon in Mi Home and select Duplicate screen.

Advantages of the method:

• 🔹 Automatic resolution setting for TV parameters.
• 🔹 Support for sound transmission without delay.
• 🔹 The ability to control the TV from a smartphone (volume, channels).

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To work smoothly through Mi Home, both devices must be connected to the same 5 GHz Wi-Fi network. Lags are possible at 2.4 GHz.

7. Solving common problems

If the screen is not duplicated or the broadcast is interrupted, check the following points:

Problem 1: The TV is not displayed in the list of devices

• 🔄 Restart the router and both devices.
• 📶 Make sure that the TV and phone are connected to the same network (not the guest network!).
• 🔧 Update the TV firmware and MIUI smartphone.

Problem 2: Sound is transmitted, but the image is not.

• 🎵 In the screen duplication settings on your smartphone, turn on the option to Transmit audio and video.
• 🔊 Check if the sound on the TV is turned off (Mute button).
• 🔄 Reconnect devices by selecting Mirror mode instead of Just Sound.

Issue 3: Severe delay (lag) in duplication

• 📶 Connect to 5 GHz instead of 2.4 GHz.
• 📱 Close background apps on your smartphone (especially instant messengers and games).
• 🔌 Use a wired connection (HDMI) for critical tasks (games, video).

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If the image on the TV "breaks" or slows down, reduce the resolution of the broadcast in the Miracast settings to 720p. This will reduce the load on the smartphone processor.

FAQ: Frequent questions about screen duplication