Xiaomi’s screen broadcast feature on smartphones allows you to wirelessly transfer images from your phone to your TV, monitor, or even other mobile device, which is convenient for watching movies, presentations, games, or showing photos on the big screen, but many users are faced with questions about how this technology works, what protocols are used, and why there are sometimes delays or communication interruptions.
In this article, we will discuss the technical foundations of the broadcast function on Xiaomi, including supported standards (Miracast, Google Cast, AirPlay), features of work on different models (from Redmi Note to flagship Xiaomi 14), as well as give step-by-step instructions for setting up, focusing on typical problems – from lack of sound to inability to connect to the TV – and how to solve them.
What is the Xiaomi broadcast feature and why you need it
The broadcast (or screen mirroring) feature is a technology that duplicates the contents of a smartphone screen to an external device in real time, and on Xiaomi smartphones it is implemented through a combination of hardware and software solutions that support multiple protocols:
- 📺 Miracast is a wireless video transmission standard without an Internet connection (works via Wi-Fi Direct.
- 🔄 Google Cast is a protocol from Google used in devices with Chromecast or built-in Cast support (such as Android). TV). Requires a connection to a single Wi-Fi network.
- 🍎 AirPlay is a proprietary protocol from Apple, but some Xiaomi models (e.g. Mi) TV) Support it through third-party applications.
Main use cases:
- 🎮 Games: Bring gameplay to the big screen for convenience (for example, in Call of Duty Mobile or Genshin Impact).
- 🎬 Media Content: Watch movies from YouTube, Netflix, or local files without having to connect your phone via cable.
- 📊 Presentations: presentation of slides or documents at conferences.
- 📸 Photo/video: viewing the footage in high resolution on TV.
It's important to understand that streaming and streaming (like DLNA) are different things: the first duplicates the entire screen, the second only transfers media files without displaying the phone interface.
What Xiaomi models support screen broadcasting
The streaming feature is available on most Xiaomi smartphones released after 2018, but its implementation depends on the version of MIUI and the hardware platform.
| Smartphone model | Miracast support | Support for Google Cast | Features |
|---|---|---|---|
| Xiaomi 14/14 Pro | ✅ Yes. | ✅ Yes (via Settings) → Connections) | Wi-Fi 6E support reduces latency to 20ms. |
| Redmi Note 12 Pro+ | ✅ Yes. | ✅ Yes. | Requires MIUI 14+ to work with Chromecast. |
| POCO F5 | ✅ Yes. | ❌ No (only through third-party applications) | It uses modified firmware without native Cast support. |
| Xiaomi 11T Pro | ✅ Yes. | ✅ Yes. | Supports 4K@60fps when connecting to compatible TVs. |
| Redmi 10A | ❌ No. | ❌ No. | A budget model with reduced MIUI functions. |
To check for support on your device:
- Open Settings → Connections and Sharing → Broadcast.
- If you don’t have one, try updating your MIUI to the latest version or using third-party apps (such as ApowerMirror).
⚠️ Note: On some models (e.g, POCO M4 Pro) The broadcast function can be hidden in the developer menu. To activate it, go to Settings. → The phone. → Version. MIUI and tap 7 times on the assembly number.
How to turn on the stream on Xiaomi: step-by-step instructions
The connection process depends on the type of receiver (TV, projector, other phone). Consider the universal algorithm for Miracast (the most common protocol):
☑️ Preparation for broadcast
- Activate the stream on your smartphone: Open Settings → Connections and Sharing → Broadcast. Click Start Broadcast (or Wireless Display on older versions of MIUI). Wait for the phone to find the available devices.
- Connect to the TV: Choose your name TV Confirm the connection on both devices (may require input) PIN-code).
- Configure display options: In the broadcast menu, you can select resolution (720p, 1080p) and frame rate (30fps or 60fps). 1080p@60fps is recommended for games, 4K@30fps for movies (if supported).
For Google Cast (e.g., Chromecast):
- Make sure your smartphone and Chromecast are connected to the same Wi-Fi network.
- Open a supported app (such as YouTube or Google Photos).
- Press the Cast icon (📡) and select your device.
⚠️ Note: When using Miracast, the sound is transmitted by default to the TV. If there is no sound, check the audio output settings in the broadcast menu or restart the connection.
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If the broadcast is interrupted, try reducing the resolution to 720p or disabling background apps consuming the internet (such as downloads to Telegram).
Technical Limitations and Why Transmissions Can Be Delayed
Even on Xiaomi’s flagship models, users are facing delays (lags), communication interruptions, or poor image quality, due to limitations of wireless protocols and hardware features:
- 📶 Wi-Fi bandwidth: Miracast requires a channel 5 GHz for stable employment in 1080p@60fps. Nana 2.4 GHz possible artifacts and lags.
- 🔋 Processor and GPU: Budget models (e.g. Redmi) 9A) They can’t handle real-time video coding, which leads to drawdowns FPS.
- 📱 Version. MIUI: In the firmware older MIUI 12 No Optimization for Google Cast, Which Makes Apps Like Netflix Not Live.
- 🔌 External interference: Other devices on the network (such as microwaves or wireless headphones) interfere at 2.4 GHz.
Critical information: On smartphones with a Snapdragon 4xx processor (such as Redmi 10), 1080p broadcast can lead to overheating and forced resolution reduction to 480p.
How to reduce lags:
- 🔄 Switch to 5GHz Wi-Fi (if supported by a router).
- 📉 Reduce the broadcast resolution in the settings.
- ❌ Close all background apps, especially instant messengers and cloud services.
- 🔋 Connect your phone to charge – performance restriction due to low battery charge strengthens lags.
Why does the broadcast only work in portrait mode?
Solving Common Translation Problems
If the broadcast does not start or does not work correctly, use this instruction:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone can't find the TV. | Wi-Fi Direct is disabled on TV | Turn on Miracast in your TV settings (usually under Network or Screen). |
| The sound is only through the phone. | Incorrect audio output settings | In the broadcast menu, select Transmit the sound to the device. |
| The broadcast stops in 10-20 seconds. | Energy saving limits background activity | Add the broadcast app to the battery exceptions (Settings → Battery → Optimization). |
| Poor image quality | Automatic resolution reduction due to weak signal | Forced set 1080p in the broadcast settings and bring the phone closer to the router. |
If the problem persists:
- Reboot both devices.
- Update the TV firmware and MIUI on your phone.
- Reset network settings on your smartphone (Settings) → SIM-maps and mobile networks → Resetting network settings).
⚠️ Note: Some Xiaomi Mi TVs TV The broadcast function is blocked if Game mode is enabled. Switch to standard display mode.
Alternative ways to broadcast the screen on Xiaomi
If the built-in function is unstable, consider third-party solutions:
- 🖥️ ApowerMirror: The app supports Wi-Fi or Wi-Fi broadcasting USB, including screen recording. POCO old Redmi models.
- 🔗 TeamViewer QuickSupport: Allows remote control of your phone from a PC, but requires a stable Internet connection.
- 🎮 Steam Link: Optimized to stream games to your TV with minimal latency (requires Steam on PC).
- 📱 Scrcpy: Wirelessly control your phone from a computer via ADB. Suitable for developers.
For use of Scrcpy:
adb tcpip 5555
adb connect [IP- phone address]:5555
scrcpy --bit-rate 8M --max-fps 60Where 8M is the bitrate (can be increased to 20M for better quality), and 60 is the frame rate.
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App side (e.g. ApowerMirror) often offer more features than the embedded stream, but can collect data about your device. Use it only from official sources (Google Play or the developer's website).
Safety in the use of broadcasting
Screen broadcasting is a convenient tool, but it comes with risks:
- 🔓 Data interception: When Miracast is used on public networks (such as in a cafe), attackers can intercept broadcast content.
- 📱 Access to notifications: All notifications, including private messages, are displayed on the TV screen.
- 🔄 Application side: Some broadcast programs request permissions to access files or cameras.
How to defend yourself:
- 🔒 Use the broadcast only on trusted networks.
- 🚫 Turn off notifications for confidential applications (Settings) → Notifications → Confidentiality).
- 🛡️ Check the permissions of third-party applications before installing.
On the Xiaomi Mi TV you can turn on the protected mode:
- Go to Settings → System → Security.
- Activate the option to Disable broadcast without confirmation.