Broadcasting images from a smartphone to a big screen is one of the most sought-after features in today’s smart home ecosystems. Screen replay allows you to instantly turn a regular TV into a multimedia center for viewing photos, videos or even games. Owners of Xiaomi equipment often face the need to bring content from a mobile device to the Mi TV panel, but the process of setting can have its own nuances depending on the version of the operating system.
There are several proven methods of syncing devices, each with its own advantages.Some users prefer standard Android protocols, while others choose proprietary solutions from the manufacturer. Understanding the differences between Miracast and Google Cast technologies will help you choose the best option for your particular situation and avoid delays.
In this article, we will discuss in detail all the ways of connecting, from built-in system functions to the use of third-party applications. You will learn how to ensure stable connection and high quality of the picture without unnecessary wires. The readiness of the TV and smartphone to work on the same network is a key factor in successful configuration.
Preparing devices for synchronization
Before you start activating the broadcast function, you need to make sure that both devices are in the same network conditions. Wi-Fi network should be stable, as the transmission of video stream in high resolution requires significant channel bandwidth. If the router supports the 2.4 GHz and 5 GHz bands, it is recommended to use the latter to minimize latency.
Also, check that both devices have the necessary wireless modules on. On Xiaomi Mi TVs with PatchWall shell or Android TV settings can be in different sections of the menu. Usually you need to activate the external device detection mode so that the smartphone can “see” the panel.
⚠️ Warning: Make sure that your router does not include customer isolation AP (AP Isolation), because this feature prevents devices on the same network from communicating with each other, making it impossible to connect.
Remember to update the software on both devices to the latest available version. Developers often release patches that fix data protocol errors. Check for updates in Settings → About TV → System Update.
☑️ Checking before connection
Use of the built-in Mi Cast function
The most native way for Xiaomi’s ecosystem is to use Mi Cast technology, which is designed specifically to allow deep integration between the brand’s smartphones and their TVs, and not only duplicate screens, but also control media playback.
To start the process on the remote control of the TV, find the button with the screen image or go to the application menu. There you should select the Wireless Display or Mi Cast. After activation, the TV will go into the standby mode of connection, displaying the code or device name.
On your smartphone, open the notification curtain and find the Broadcast or Projection icon. From the list of available devices, select your TV. If the connection is successful, the image from the mobile device will appear on the large panel almost instantly.
What to do if the Mi Cast is not working?
Google Home (Chromecast built-in)
Most modern Xiaomi TVs run on Android TV, which implies the presence of Chromecast technology. This is a universal standard that allows you to stream content from almost any Android smartphone or iOS device through the Google Home app.
First, you need to install and configure the Google Home app on your mobile phone. Once you log in to your Google account, the app will automatically scan the network and find the TV connected. In the program interface, you need to select your TV and click the Broadcast button.
This method is particularly useful because it allows you to stream not only the entire screen, but also content from individual applications such as YouTube or Netflix, just by clicking on the broadcast icon inside the player, and the quality of the image is often higher, since the stream is transmitted directly from the server, not through the phone.
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To reduce latency when playing, use the Game mode in your TV image settings if available, although this affects signal processing more than Wi-Fi transmission speed.
Third-party applications for screen duplication
In situations where standard methods don't work or require advanced functionality, third-party solutions come to the rescue, applications like AirScreen or TV Cast are installed on a TV, after which they emulate different signal reception protocols, which is especially true for older models or specific versions of firmware.
Once you install this app on TV, it creates a virtual device that you can see on your smartphone, and you can select it from your phone's broadcast menu, and some programs allow you to transfer files, photos and videos directly from the file manager without completely duplicating the interface.
It is worth considering that the use of third-party software can consume additional resources of the TV processor. This sometimes leads to a slight heating of the device or a decrease in the overall responsiveness of the PatchWall system.
| Connection method | Delay (Latency) | Image quality | Compatibility |
|---|---|---|---|
| Mi Cast | Low. | High. | Xiaomi devices |
| Google Cast | Medium | Very high. | Android / iOS |
| Miracast | Medium | Good. | Android / Windows |
| Third-party Apps | Tall. | Depends on the network. | All platforms. |
Solving Connection Problems
Despite the ease of setting, users sometimes encounter connection errors.The problem is that the TV does not appear in the list of available devices, in which case you need to check whether the antivirus or firewall on the router blocks local data exchange.
Another common cause of failure is a crowded cache of system services. Cleaning up Android System WebView and Google Play Services applications on your TV often helps restore the search function to work. → Annexes → All applications.
⚠️ Note: If after updating the TV firmware, the connection is lost, try resetting the network settings (not a complete reset). TV), Update network security certificates.
In some cases, changing the frequency of the Wi-Fi channel helps. If the 2.4 GHz band is overloaded by neighboring routers, switching to 5 GHz can dramatically improve flow stability and remove image artifacts.
Optimizing the quality of image and sound
To achieve the best visual experience, it is important to adjust the output settings correctly. Different modes of image are often available on the Xiaomi TV menu, such as “Cinema”, “Sport” or “Game”. When broadcasting the smartphone screen, the “Normal” mode or a special mode for the PC is best suited to avoid unnecessary post-processing of the picture.
The audio track can also be delayed. If you notice a desynchronization of audio and video, try changing the audio output settings under Settings → Sound → Digital Output. Switching from Auto to PCM often solves the codec compatibility problem.
And don't forget the resolution. If your smartphone has a high-resolution screen and your TV only supports Full HD, the system has to automatically scale the image, but manually setting the 1920×1080 resolution in your phone settings can sometimes be helpful in reducing network load.
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Connection stability is more important than maximum resolution: it is better to choose 720p with a smooth picture than 4K with constant hanging.