The modern multimedia capabilities of Xiaomi smart TVs allow you to turn the living room into a real entertainment center, but often users face the need to bring the image from the smartphone to the big screen. Miracast technology is a wireless media standard that is built into most Android devices and allows you to broadcast the screen without the use of additional wires or routers. This solution is ideal for showing presentations, viewing photos from the gallery or launching video files that are not supported by built-in Smart TV applications.
The pairing process may seem complicated at first glance, but MIUI for TV is optimized for the fastest setup possible. Unlike Chromecast, which requires Wi-Fi networking and Google Home, the Wi-Fi Direct protocol at the heart of Miracast creates a direct connection between devices, which provides minimal signal latency and high picture quality, which is critical for dynamic content.
In this article, we will discuss all the stages of connection, from compatibility check to fine-tuning the resolution. You will learn how to activate hidden functions in the TV menu and what settings will ensure a stable transmission of the video stream. The correct configuration will eliminate image jerks and sound desynchronization, ensuring comfortable use of the technique.
Technological features of Miracast on the Xiaomi platform
The foundation of wireless image transmission in the Xiaomi ecosystem is the Wi-Fi Display standard, which is the marketing name for Miracast technology. Unlike DLNA, which allows you to broadcast only certain types of files (photos, videos, music), this protocol completely mirrors the screen of your smartphone. The TV in this case acts as a receiver, decoding the video stream in real time, which requires sufficient processing power of the TV Box processor or the built-in Smart TV module.
It is important to understand that the quality of the connection depends on the frequencies of the Wi-Fi module. Most modern models of Xiaomi Mi TV support dual-band networks, however, to transmit heavy 4K content preferably use the 5 GHz bandwidth. This allows you to achieve a bandwidth sufficient to transmit a bitrate of up to 20 Mbps without compression, while maintaining image detail.
⚠️ Note: When using the mirror display function in high-dynamic games, input lag (input lag) from 100 to 300 ms. For shooters and fighting games, this can become critical, so in such scenarios it is preferable to use wired HDMI Connecting or streaming through gaming services.
The TV shell automatically recognizes an incoming connection request, but sometimes manual activation of the service is required. In newer versions of PatchWall firmware, this module is integrated deep into the system and does not require the installation of third-party APK files. However, if you have an older model, you may need to update the system software to ensure compatibility with new versions of Android on smartphones.
Preparatory stage and check of compatibility of devices
Before you start setting up, make sure both devices are in good working order and have up-to-date software versions. Go to the TV menu via the remote, select Settings → About TV → System Update and check for new versions. Having fresh firmware ensures that known Wi-Fi Direct protocol bugs are corrected and improves connection stability.
On the smartphone side, you should also check the settings. In most cases, the feature is called Translation, Wireless Monitor or Smart View depending on the model and version of Android. Make sure that the phone has Wi-Fi enabled even if you are not connected to a particular network, as it is necessary for device detection.
☑️ Checklist before connection
Special attention should be paid to energy saving. When the screen is broadcasting actively, the smartphone consumes a significant amount of energy and the processor heats up. It is recommended to close the background applications that are not used to free up resources for encoding the video stream, this will also prevent possible lags due to a lack of RAM.
Step-by-step instructions for activating signal reception on the TV
The interface of Xiaomi TVs may vary depending on the regional version (Global, China, Russia), but the logic of the search function remains the same. Most often, the application for receiving the signal is called Wireless Display or Wireless Screen and is located in the Apps folder on the home screen or in the My Applications section.
If the standard app is not in the interface, it can be found through a built-in voice or text search. Press the microphone button on the remote and say "Wireless Display." The system will start the service itself and put the TV in standby mode, displaying the device name and instructions for the smartphone on the screen.
What to do if the application is not located?
When you start, you'll see a window that says your TV's name, like MI TV-4A-55, at which point you're actively scanning the airwaves and ready to accept the request. Don't close this window, because in the background, the reception service may be suspended by the system to save resources.
Smartphone setup and pairing process
The algorithm of actions on the phone depends on the shell installed. Owners of Xiaomi devices (MIUI/HyperOS) are the most lucky: they need to open the control center (swipe down from the upper right corner), find the Translation icon and click on it. The phone will begin to search for available displays in range.
For users of other brands (Samsung, Huawei, Realme), the path may look different. It's usually the Settings menu → Connections → Broadcast or swipe the notification curtains down twice to search for the "Smart View" button. Once your Xiaomi TV is listed, just tap the name to initiate the connection.
When you connect, you may see a request for permission on your TV screen. Use the remote to select "Accept" or "Allow." After that, the image from your smartphone should appear on the full screen. If the picture does not scale correctly, check the aspect ratio settings.
💡
If your phone can't see TV, try temporarily disabling mobile internet (4G/5G) on your smartphone, and sometimes the priority of data is confusing the process of finding devices on your local Wi-Fi Direct network.
Compatibility table and possible problems
Even when properly configured, protocol version conflicts can occur, and below is a table that will help diagnose the problem based on symptoms.
| Symptoms. | Probable cause | Decision |
|---|---|---|
| TV not visible on the list | Different Wi-Fi subnets or Wi-Fi Direct turned off | Check that both devices are on the same network, restart the router |
| Image is there, no sound. | DRM blocking or failure of sound drivers | Restart the broadcast app, check the volume of the TV |
| Severe picture delay | Busy Wi-Fi channel (2.4 GHz) | Switch the router and TV to 5 GHz |
| Black screen when starting the video | Protect HDCP from copying content | Use official apps (YouTube, Netflix) inside your Smart TV |
The problem of the problem of DRM-Services like Netflix or IVi can block mirroring because of copyright policy, and in such cases, the image will be black, although the sound can be played.
To solve connection problems, a full reboot cycle often helps: turn off the TV from the socket for 30 seconds, completely restart the smartphone. This will clear the cache of network services and reset the hanging processes of Wi-Fi Direct.
Optimizing the quality of image and sound
To achieve the best quality, you need to adjust the output resolution correctly. Go to the broadcast settings on your smartphone (if there is such an option) and select the resolution corresponding to your Xiaomi TV matrix (usually 1920x1080 or 3840x2160).
The soundtrack is also transmitted over Miracast. If you're using an external speaker system connected to your TV via Optical Out or ARC, make sure that the TV's audio settings are the appropriate output, not the built-in speakers, and that allows you to enjoy surround sound without delay.
💡
Miracast connectivity is 90% stable depending on the quality of the Wi-Fi signal and the absence of physical obstacles between the router and the devices.
There is a nuance with the orientation of the screen. When you turn your smartphone, the image on the TV should rotate automatically. If this does not happen, turn the screen automatically in the curtain of the phone's notifications. Some older TV models may require manually adjusting the aspect through the Settings menu → Image → Screen format.
Alternative methods and third-party solutions
If native Miracast is unstable, you can use third-party applications that use the same principle but have their own compression algorithms. A popular solution is AirScreen, which can be installed on a TV from the Google Play Store, and emulates AirPlay and Miracast reception, often running where the standard feature fails.
Another option is to use a built-in Chromecast, which has a broadcast button in YouTube or Google Photos, which sends a link to the video directly to the TV, which downloads the content itself without loading the smartphone, which saves battery and provides better quality, since the TV downloads the video directly from the Internet.
⚠️ Note: Installation of unknowns APK Download apps only from the official Google Play Store or verified sources such as Aptoide TV.
For advanced users, the ADB debugging method is available. Connecting to a TV via a computer, you can force the wireless display service to run by the command adb shell am start -n com.android.tv.settings/.WirelessDisplayActivity. This can help if the application shortcut is lost in the depths of the menu.