How to Enable Two Screens on Xiaomi: Duplication and Desktop Extension

Using two screens on Xiaomi devices is not only a way to increase performance, but also an opportunity to create a user-friendly multimedia system. However, many users have difficulty trying to activate Dual Display or Screen Mirroring mode. Depending on the model (whether it's Mi). TV, Mi Box or smartphone with Miracast support can be very different.

In this article, we will analyze all the current ways to connect the second screen – from the standard Android features. TV You will learn how to duplicate an image on two TVs, expand the desktop for games or work, and solve typical problems with latency or lack of sound. TV Q2 2026, Mi TV A Pro and Mi Box S 2nd Gen, where support for two screens is implemented differently.

Which Xiaomi devices support two screens?

Not all Xiaomi gadgets can work with two displays at the same time. TV (or MIUI TV). Here are the key compatibility criteria:

• 📺 Xiaomi TVs with a processor MT9638 or newer (e.g. Mi) TV Q2 75", Mi TV ES 2023) — support HDMI ARC/eARC duplicate.
• 🎮 Mi Box 4K/Pro Mi Box S and 2nd Gen – only through Miracast or Google Cast (no hardware extension).
• 📱 Xiaomi smartphones on the MIUI 14+ — You can stream the screen on TV over Wi-Fi Direct (Wireless Display function).
• 🖥️ Xiaomi monitors (such as Mi Surface Display 27) – Extended Desktop only when connected to a PC.

Important: Xiaomi TVs based on Android TV 10 and below (e.g. Mi) TV 4A 2018–2020) does not support hardware screen duplication – only software mirroring through applications. → On TV.

Method 1: Duplication of screen through HDMI (ARC/eARC)

The most stable method for Xiaomi TVs with support HDMI 2.1 — portage ARC/eARC. This method allows you to duplicate the image on a second TV or sound bar without delay:

1. Connect the second TV or monitor to the port HDMI ARC (usually marked HDMI 1 (ARC)) mostly Mi TV.
2. Turn on both devices and go to the main TV in Settings → Sound. → HDMI ARC.
3. Activate the Control option HDMI (CEC) and select the Duplicate screen mode.
4. On the second TV in the menu, select the appropriate signal source HDMI-entrance.

⚠️ Note: When dubbing through HDMI ARC Maximum resolution on the second screen is limited 4K@30Hz. 4K@60Hz will need to be used HDMI 2.1 both-device.

Support HDMI ARC/eARC both-device|

Cable HDMI 2.0 or later|

The same screen resolution (recommended) 1920×1080 or 3840×2160)|

Power saving modes on TV are turned off-->

Method 2: Wireless duplication through Miracast/Wi-Fi Direct

If you don't. HDMI-The cable or TV does not support ARC, You can use wireless broadcasting, and both devices must support Miracast, which is a standard for mirroring the screen:

On the main device (e.g. Xiaomi Mi 13 or Redmi Note 12):

1. Open Settings → Connection and Sharing → Wireless display.
2. Turn on the option and wait for the available devices to be found.

On the second screen (Xiaomi TV or Mi Box):

1. Go to Settings. → Devices and accessories → Wireless projection.
2. Select your smartphone from the list and confirm the connection.

⚠️ Attention: With wireless duplication, latency can reach 100-150 ms, which is critical for gaming or watching videos:

• 📶 Use a router with Wi-Fi 6 support (802.11ax).
• 🔄 Switch to the 5 GHz band in network settings.
• 📵 Disconnect other devices from the same network.

💡

If the TV doesn’t appear in the Miracast device list, try rebooting both gadgets and turning on the Device Search mode manually on the TV.

Method 3: Expanding the screen through USB-C/HDMI (smartphone)

Xiaomi smartphones based on Snapdragon 8 Gen 2 (for example, Xiaomi 14 or Black Shark 6) support the output of the image to an external monitor through the USB-C → HDMI. This allows you to use the phone as a mini PC with two screens:

• 🔌 adapter USB-C to HDMI (Supported by DisplayPort Alt Mode).
• 🖥️ Monitor or TV with port HDMI 1.4+.
• ⚡ Power supply (charging) 18W+) — Without it, the phone can limit performance.

Connection:

1. Connect the adapter to your phone and monitor.
2. On the phone will appear a notification about the connection of the external display – select the mode Expand the screen.
3. In screen settings (Settings) → Display. → External monitor: Set up the resolution (recommended) 1920×1080 steady-work).

Limitations:

• 🎮 Games may not support an external display (e.g. Genshin Impact or PUBG Mobile Blocks Output on Second Screen).
• 🔋 Fast battery discharge – use charging while running.
• 🖼️ Not all apps are multi-display-friendly (e.g., TikTok or Instagram will be duplicated rather than extended).

Method 4: Using Google Cast to stream content

If you don’t need to duplicate the entire screen, but only broadcast a video or presentation, Google Cast (built into Android) is fine. TV This method works even with older Xiaomi models without Miracast support.

Instructions:

1. Make sure that the TV and smartphone/PC are connected to the same Wi-Fi network.
2. On your TV, open the Google Cast Receiver app (usually preinstalled).
3. On your smartphone or in the Chrome browser (on PC) click the Cast icon (📡) and choose your Mi. TV.
4. Run the video on YouTube, Netflix or another app with Cast support.

Advantages of the method:

• 🎬 There is no delay in playing video (unlike Miracast).
• 🔄 You can continue to use the phone while the broadcast is going on.
• 🌍 Works on any Chrome or Google Apps device.

Disadvantages:

• 🚫 Does not support desktop duplication – only content broadcasting.
• 🔊 The sound is transmitted only to the TV (on the smartphone there will be no sound).

💡

Google Cast is the best choice for watching videos, but it’s not suitable for gaming, document management, or interface duplication.

Problem Solving: No sound, no lag, no second screen detected

When setting up two screens on Xiaomi, users often encounter common errors.

1.The second screen is not detected

• 🔌 Check the cable. HDMI — Try another port or cable (preferably a High Speed certified one).
• 🔄 Reboot both devices.
• 📋 Update the TV firmware (Settings) → On TV. → Updating the system).
• 🛠️ Reset the settings. HDMI CEC (Settings → Devices and accessories → HDMI CEC → Reset).

2.No sound on screen two.

• 🔊 In the TV sound menu, select the source. HDMI ARC Or the external speaker.
• 🎵 Check if the audio is turned off in the app settings (for example, on YouTube or Netflix).
• 🔌 If you use Miracast, sound can only be transmitted to the main device – turn on the option to Transmit sound to TV in the wireless display settings.

3. Strong lags or image tears

• 📶 When wirelessly connected, switch to 5GHz Wi-Fi or use a cable HDMI.
• 🖼️ Reduce the resolution on the second screen to 1080p.
• 🔋 Connect your TV and smartphone to charge – energy saving can limit performance.

💡

If, in the case of duplication, through HDMI Image flashes, try to disable Dynamic refresh rate in TV screen settings.

Additional features: games, streaming and working with two screens

Two screens on Xiaomi open up new use cases:

🎮 Games with two monitors

On Xiaomi Mi. TV s HDMI 2.1 you can display the game on the big screen, and on the smartphone leave a chat or map:

1. Connect your phone to the TV through HDMI (duplicate).
2. In the game settings (e.g. Call of Duty Mobile), select Display the interface on your phone.
3. Use the Xiaomi Game Controller to control the gamepad.

📊 Documentation work

With help. USB-C to HDMI You can connect Xiaomi Pad 6 or smartphone to the monitor and use it:

• 📑 WPS Office in two screens (document on the monitor, tools on the tablet).
• 📊 Microsoft PowerPoint with speaker notes on the main screen and slides on the second.

🎥 Streaming and content creation

For streamers, it's helpful:

• 📹 Use Mi. TV clap-to-shoot OBS Studio (via) HDMI-capture-card).
• 🎙️ Connect the microphone to the TV via Bluetooth or 3.5 mm, and output the sound to the second screen.

FAQ: Frequent questions about two screens on Xiaomi