Modern media centers like Xiaomi Mi TV 4S offer users a variety of multimedia experiences. One of the most popular features is wireless projection of images from a smartphone or tablet to a large screen. This allows you to view photos, videos and even play mobile games from the comfort of a home theater. However, the connection process is not always smooth, and users often face the need to manually adjust network settings and applications.
In this article, we will take a look at all aspects of Miracast and AirPlay technology running on the Android TV platform installed on your device, how to activate hidden features, which apps are best for broadcasting, and how to fix common connection errors.
Before you start setting up, you need to make sure your hardware is ready to go. Wireless projection requires a stable connection, so pay attention to the router and its location relative to the TV. It is also important to update the software to the latest version, as old firmware may contain errors in the Wi-Fi Direct module.
Preparation of equipment and Wi-Fi network
The foundation of successful broadcasting is the correct operation of the local network. Both devices — and Xiaomi TV 4S and your smartphone — must be on the same subnet. This means that they must be connected to the same router. If you use a dual-band router, make sure that both gadgets are connected to the same frequency, preferably 5 GHz, for high bandwidth.
It is a common mistake to use a guest Wi-Fi network for one of the devices. In such networks, client isolation prohibits data exchange between connected gadgets, making the DLNA and Miracast protocol inoperable. Check the router settings and make sure that the AP isolation function is disabled for your main network.
⚠️ Note: If your router automatically switches devices between the 2.4 GHz and 5 GHz bands, this may cause a connection to break during broadcast.
You can use built-in diagnostic tools to check the signal quality on your TV. Go to the network settings menu and see the signal level. If it's below -70 dBm, you may need to move the router closer to the TV or use a Wi-Fi repeater.
Activation of the feature on the Xiaomi 4S TV
The interface of the Android TV operating system may vary depending on the region and version of the firmware, but the basic algorithm of actions remains similar. First, turn on the TV and wait for the desktop to load fully, you will need to find the application responsible for receiving the external signal.
In most cases, the home screen at the top of the app series has an icon called Wireless Projection or Cast. If you don't see it right away, go to the Apps section and find the standard system component there. In some firmware versions, it may be called Mireplay or have a Miracast logo.
- 📺 Press the button "Menu" or "Settings" (the gear icon) on the remote).
- 📡 Go to the Settings section → Network and Internet.
- 🔍 Find the "Translation" or "Wireless Monitor" option and activate it.
- ✅ Wait for the message “Ready to connect” to appear on the screen.
Once activated, the TV goes into standby mode, and you can display the name of the device that your smartphone will see when you search, which is usually a model of a TV, like the Xiaomi TV 4S 55. Remember that name, you'll need it to identify it in the list of available devices on your phone.
Broadcast from Android-smartphone
Android device owners have several ways to display an image on the screen, the easiest way is to use the built-in Translation or Smart View (name depends on the smartphone manufacturer), open the Quick Settings Panel by swiping from top to bottom, and find the corresponding button.
If you can't find a TV by standard means, you can use the Google Home app. This is the official tool from Google that guarantees compatibility with Android TV. Once you install the app, open it, click on your device icon and select the "Translate screen" button.
⚠️ Note: When using third-party projection applications, make sure they are given all the necessary permissions, including access to the local network and microphone (to transmit sound).
For advanced users, ADB debugging is available if standard protocols are unstable, but 95% of the time, the standard system is sufficient, and the quality of the image will depend on the power of your smartphone's Wi-Fi module and the distance to the router.
Using AirPlay for Apple devices
iPhone and iPad owners can use AirPlay technology, which is natively supported by newer versions of Xiaomi firmware. To check support, go to the TV settings and find the section associated with Apple AirPlay. If this option is not available, you can activate it through the installation of a special application from the Google Play Store, such as AirScreen.
The connection process is as simple as possible: open the Control Point on your iPhone, click the Screen Replay button and select your Xiaomi TV 4S. The system will request a confirmation code that will appear on the TV screen. Enter it on your smartphone to start the session.
And it's important to note that when you stream through AirPlay, you can transmit a little bit of latency to video, which is a feature of compression codecs. It's not critical for watching movies, but it can be noticeable for games. You can try to change the buffering in the settings of the receiver app on your TV.
| Parameter | Android (Miracast) | iOS (AirPlay) | DLNA |
|---|---|---|---|
| Type of transmission | Streaming (screen to screen) | Streaming (screen to screen) | File (media) |
| Delay. | Medium (50-150 ms) | Low (30-100 ms) | Absent. |
| Quality. | Depends on the signal. | High (up to 4K) | Original |
| Sound. | It's broadcast with the video. | It's broadcast with the video. | Separate flow |
Solving Connection and Delay Problems
Even with the right setup, there can be technical failures, the most common problem is desynchronizing audio and video or “suspending” pictures, which often indicates an overload of the Wi-Fi channel. If you have many devices on your network, try to turn off the excess gadgets or limit their speed.
Another reason could be energy saving: Some smartphones aggressively restrict background Wi-Fi activity to save battery power. Go to your phone's battery settings, find a broadcast app or system service, and select No Limits mode.
- 🔄 Restart the router by turning off power for 10 seconds.
- 📶 Make sure your TV is not connected via a 2.4GHz Wi-Fi adapter if the router supports 5GHz.
- 🗑️ Clear the cache of the "Wireless projection" application in the settings of the TV.
- 🛡️ Check if the antivirus on your phone is blocking your local connection.
⚠️ Attention: Use VPN On a smartphone, while trying to connect to a local TV is guaranteed to lead to an error. VPN It changes the gateway, making the devices invisible to each other. VPN before setting up.
Alternative applications for projection
If Xiaomi’s standard tools are not working well, the market offers many alternatives, and one of the most popular is the Web Video Caster app, which allows you to stream video directly from your phone’s browser, bypassing system restrictions, and send only a video stream to your TV, not the entire screen.
Screen mirroring is a well-established LetsView, a free, high-resolution, low-resource application that automatically finds TVs online and offers a user-friendly interface for cursor control.
Also worth mentioning is the DLNA protocol, which is ideal for watching pre-loaded movies: you don't have to duplicate your phone screen, just select a file in the gallery and click the Translate button, selecting your Xiaomi TV 4S as the recipient, which reduces the load on the smartphone processor.