Modern multimedia systems allow you to broadcast content from a mobile device to a large screen, and owners of the popular Xiaomi Mi TV 4S model often look for ways to implement this functionality. Connecting a smartphone to a TV opens up access to watching movies, photos and even running mobile games diagonally in 43 or 65 inches. The process of synchronizing devices can be done by several methods, each of which has its own features and advantages.
In this article, we will take a closer look at all the current connectivity options, from Mi Remote and Cast wireless technologies to wired HDMI connectivity, learn how to set up a mirror display screen, which apps to use for iOS and Android, and how to solve typical problems if devices stop “seeing” each other.
Preparing devices for synchronization
Before you start the active setup phase, you need to make sure that both devices are ready to go.The basic requirement for most wireless methods is to find a smartphone and a Xiaomi Mi TV 4S on the same local network.This means that both gadgets must be connected to the same router, whether it is 2.4 GHz or 5 GHz.
Check the version of the operating system on your TV. For modern data protocols to work correctly, it is desirable that the device has the latest firmware installed. You can find the update in the Settings menu → About TV → System Update. Sometimes older versions of the software do not support new video encoding standards.
⚠️ Note: When using Guest Network (WIFI), devices can be isolated from each other by router safety rules, making it impossible for the phone to detect the TV.
It is also worth checking the available space in the TV's internal memory. If the storage is crowded, the system may not work smoothly, and buffering when broadcasting video will cause delays. Clearing the cache or removing unused applications can significantly speed up the interface response.
☑️ Checking before connection
Wireless connectivity via Wi-Fi and Miracast technology
The most popular and convenient way is to use the built-in wireless display function. In the Xiaomi ecosystem, this technology is often implemented through the Miracast protocol or the Mi Drop proprietary solution. For Android smartphones, the process usually follows: in the notification curtain, you need to find the button "Translation", "Wireless monitor" or "Smart View" (the name depends on the phone manufacturer).
Once the search function is activated, the phone will start scanning the available devices. Your Xiaomi Mi TV 4S should appear in the list. When you select a TV, you may see a request for confirmation of the connection on the screen - it must be received by the remote control. The image from the phone will instantly appear on the large screen.
For iPhone owners, the situation is a little different, as iOS uses the AirPlay protocol. Xiaomi TVs often have AirPlay 2 support built in, but if it is not active by default, you may need to install a dedicated intermediary app, such as AirScreen or AnyCast, available in the TV app store.
What if the search does not find the TV?
The quality of your image transfer depends on the speed of your router. 4K video requires a stable channel with high bandwidth. If you notice artifacts or audio desynchronization, try bringing your phone closer to the router or switching to the 5 GHz band.
Using the Mi Remote app and the Mi Home ecosystem
To integrate the smartphone with the TV, the developers suggest using the official Mi Remote app or the broader Mi Home platform. These utilities allow you not only to broadcast content, but also to use the phone as a full-fledged keyboard for typing, which is especially convenient when searching for videos on YouTube or Netflix.
To set up the control, you need to download the application from Google Play or the App Store. After launch, the program will suggest adding a new device. Select the device type "TV" and the brand "Xiaomi". The application will ask you to enter the code that will appear on the TV screen, or find the device automatically if Bluetooth is enabled.
The app allows you to transfer files directly to the TV gallery. You can upload a video taken on your phone and play it right away through the built-in Xiaomi Mi player. TV 4S. This eliminates the need to search for files through a network environment or use them. USB-accumulator.
One of the great advantages of using proprietary software is that you can customize macros and scripts, for example, you can create a command that simultaneously turns on the TV, translates it to the desired one. HDMI-Enter and launch an app to watch a movie.
Wired connection through HDMI and USB-adapter
If the wireless connection is unstable or you want to transmit video in the maximum quality without compression, the best choice will be a cable connection. USB-C to HDMI (for modern smartphones, or MHL-Adapter for older models.The Xiaomi Mi TV TV 4S equipped with several ports HDMI, This makes it easy to switch between sources.
The connection process is very simple: one end of the adapter is inserted into the phone’s charging connector, and the other is connected by an HDMI cable to the TV, and then you need to switch the signal source on the TV by pressing the Input button on the remote and selecting the appropriate port, for example, HDMI 1 or HDMI 2.
A feature of the wired method is that the phone can not transmit sound through the speaker, if the correct mode of operation is not selected. USB. In the phone settings in the section"USB-"Connection" should be selected mode "Submission of video" or"HDMI". Some phone models require the inclusion of debugging mode USB work-in.
| Type of connection | Image quality | Delay (Latency) | Stability |
|---|---|---|---|
| Wi-Fi (Miracast) | High (up to 1080p) | Medium (depending on router) | Medium |
| HDMI Cable | Maximum (4K HDR) | Minimum (nearly 0 ms) | Very high. |
| Chromecast Built-in | High (adaptive) | Low. | Tall. |
| DLNA | Depends on the file. | Low (media only) | Tall. |
Using the cable also allows you to charge your smartphone during use if the adapter has an additional power port, which is critical for long gaming sessions or watching movies, since the screen and data module activate the battery.
Broadcasting via Google Home and Chromecast
Because the Xiaomi Mi TV 4S runs on Android TV, it has built-in support for Chromecast built-in technology. This is one of the most reliable ways to stream content from apps like YouTube, Netflix, Spotify or Google Photos. You don't have to mirror the entire screen, just send a command to play a specific media file.
To get started, make sure your phone has Google Home installed. Open the app, find your TV in the list of devices. If you're in the YouTube app on your phone, click on the stream icon (a rectangle with waves) and select Xiaomi Mi TV 4S.
The main difference between this method and Miracast is that the phone acts only as a remote control, the TV itself downloads video stream from the Internet, which reduces the load on the smartphone and saves its battery, while the quality of the picture is adjusted automatically depending on the speed of the Internet.
⚠️ Note: Chromecast requires that your Google account on your phone and TV be logged in, although there is not always a strict matching requirement, but it is desirable to use it.
If standard broadcasting is interrupted, try to turn on priority for media traffic (QoS) in your router settings. This will allocate more resources to the video stream, eliminating jerks and buffering.
Solving and eliminating connection errors
Even with the right setup, there can be failures. One of the common problems is that the TV can see the network but can't see the phone, or vice versa. In these cases, the first thing you need to do is reboot both devices. 10-15 Seconds allow you to reset errors of network modules.
Another common situation is desynchronization of audio and video, which often happens when using cheap Wi-Fi adapters or congested communication channel, the solution may be to reduce the quality of the broadcast in the application settings or switch to a wired connection.
If you use third-party mirroring apps and they crash, check permissions. The app needs access to a local network, microphone (for some features), and file storage. Without those permissions, Android can block the program.
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Use static. IP-This will help to avoid situations where after restarting the router, the TV will receive a new address and the apps on the phone will no longer find it.
In the case of a problem, you can try resetting the network settings on your TV. Path to function: Settings → Network → Network Reset. After that, you need to re-enter the Wi-Fi password, but this often solves problems with the network services that are hanging.
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Rebooting the router and cleaning the app cache on the TV solve 80% of connection problems.