Modern Xiaomi Mi TV 4S televisions offer users a wide range of multimedia options, but there's often a need to display content from a smartphone on a larger screen. This could be for a presentation, a family album, or simply to watch online videos in the highest quality. Wireless connection via Wi-Fi is the most convenient method, as it eliminates the need to search for cables and adapters.
The device synchronization process is based on a single local network, ensuring high data transfer rates. Unlike wired methods, it doesn't require complex physical switching of HDMI ports. However, for stable system operation Android TV or PatchWall, installed on the TV, requires compliance with certain conditions for configuring the router and the TV itself.
In this guide, we'll cover all available streaming methods in detail, including built-in operating system features and third-party apps. You'll learn how to avoid image lag and audio desync, as well as what to do if devices can't see each other online.
Preparing equipment and network
Before starting setup, you need to make sure all system components are working correctly. The key to a successful connection is finding the smartphone and TV. Xiaomi Mi TV 4S in the same subnet. This means that both devices must be connected to the same router, even if one uses the 2.4 GHz frequency and the other 5 GHz.
Check the signal quality on your TV. If the router is far away or the signal is weak, high-definition video streaming may be interrupted. In such cases, it is recommended to move the router closer or use a wired connection to the TV itself via the Ethernet port, while keeping the smartphone connected via Wi-Fi.
⚠️ Important: If your router is configured with AP Isolation, devices will not be able to communicate with each other, even if they are on the same network. Make sure this feature is disabled in your router settings.
It's also worth updating your TV's software to the latest version. Manufacturers frequently release patches that improve protocol stability. Chromecast And MiracastTo do this, go to the settings menu and find the system section.
Make sure the necessary permissions are enabled on your smartphone as well. Operating systems Android And iOS may request local network access when you first launch streaming apps, and denying access will block device searches.
Using the built-in Chromecast feature
Televisions Xiaomi Mi TV 4S Equipped with built-in Google Cast support, this makes the image display process as simple as possible for Android and iOS users. This method doesn't require installing additional software on the TV, as all the necessary modules are already integrated into the interface. PatchWall.
To get started, open the app you want to stream content from (e.g., YouTube, Netflix, or the Chrome browser) on your smartphone. Find the streaming icon, which looks like a rectangle with Wi-Fi waves in the corner. Tap it and the system will offer a list of available devices.
- 📱 Select your TV from the list Xiaomi Mi TV 4S.
- 📡 Make sure your smartphone is connected to the same Wi-Fi network.
- 🎬 Wait for the app logo to appear on your TV screen.
If the device is not found, try restarting the app on your phone or checking the firewall settings on your router. Protocol DLNA And Google Cast use specific ports that must be open for local traffic.
The advantage of this method is the ability to use your smartphone as a remote control. You can pause a video, change the volume, or scroll through photos, and the image on your TV will respond instantly, as control is via the network, not the IR port.
Screencasting via Miracast and Wi-Fi Display
Unlike Chromecast, which streams from the internet, the technology Miracast (or Wi-Fi Display) allows you to mirror your smartphone's entire screen. This is useful when you need to show the interface of an app that doesn't have a built-in Cast button or to demonstrate how a program works.
On Xiaomi TVs, this feature is often called "Wireless Monitor" or "Wireless Display." To activate it, go to the apps section on the TV's home screen and launch the corresponding utility. Once launched, a message will appear on the screen indicating that a connection is pending.
☑️ Check before connecting Miracast
On your Android smartphone, go to Settings or the Quick Actions panel. Look for the "Cast," "Smart View," "Projection," or "Wireless Monitor" feature. The name may vary depending on the smartphone manufacturer (Samsung, Huawei, Xiaomi).
After scanning, your TV should appear in the list. When connecting, you may be asked to confirm the connection on the TV screen using the remote. Picture quality in this mode directly depends on the signal strength. Wi-Fi and channel congestion.
What to do if the image is jerking?
If the image lags when mirroring your screen via Miracast, try lowering the output resolution in your phone's settings or switching your router to a less congested channel (1, 6, or 11 for 2.4 GHz). Turning off background downloads on other devices may also help.
Connecting iPhone and iPad (AirPlay)
Apple users may encounter difficulties as native support AirPlay The PatchWall shell is not implemented in all regions or firmware versions. However, modern models Xiaomi Mi TV 4S often have built-in AirPlay 2 protocol.
To check, open the Control Center on your iPhone (swipe down from the upper-right corner or up from the bottom on older models) and tap the "Screen Mirroring" button. If the TV appears in the list and allows you to connect without a code or with simple confirmation, then native support is enabled.
If your TV isn't listed, you'll need to install an AirPlay emulator app on your TV. Popular solutions can be found in the Google Play Store on your TV (Apps section), such as AirScreen or AirPin.
- 🍏 Install the emulator app on your TV via Google Play.
- 📶 Launch the app on your TV and wait until it's ready.
- 📱 On iPhone, select Screen Casting and find the device name.
Using third-party emulators may introduce a slight delay, but ensures full compatibility.
Using the Mi Remote and PatchWall app
The Xiaomi ecosystem offers its own solution for integrating smartphones and TVs – an app Mi Remote or built-in system functions PatchWallThis method allows you not only to stream media files, but also to control your TV, use your phone's keyboard to enter text, and even transfer photos from your gallery.
To get started, download the official app. Mi Remote (or Mi Home (depending on your region) from Google Play or the App Store. After installation, you need to add a new device by selecting the "TV" category and the "Xiaomi" brand.
The system will offer several pairing methods. Select Wi-Fi connection. The app will scan the network and find your Xiaomi Mi TV 4SA confirmation code will appear on the TV screen, which you will need to enter on your smartphone.
| Function | Description | Requirements |
|---|---|---|
| Control | Full control with the remote control | Mi Remote app |
| Photo broadcast | Output slideshow | Unified Wi-Fi network |
| Keyboard | Entering text from a phone | Active input application |
| Voice search | Searching via the phone microphone | Microphone resolution |
The advantage of using proprietary software is its deep integration with the TV interface. You can transfer links from your phone's browser directly to the TV's video player, bypassing the manual search step.
However, for transferring large video files locally (without buffering from the internet), this method may be less efficient than direct DLNA streaming via the built-in media player.
Third-party streaming apps (AllCast, LocalCast)
When standard methods don't work or require advanced functionality, universal aggregator apps come to the rescue. Programs like AllCast, LocalCast or Web Video Caster can send content to almost any DLNA-compatible receiver.
The principle is simple: you install the app on your smartphone, and you can optionally install a receiver on your TV, although the built-in media player is often sufficient. The app scans the network, finds Xiaomi Mi TV 4S and allows you to select a file to play.
A key feature of these programs is the ability to stream video files that aren't supported by the TV's built-in player, as decoding occurs on the smartphone or the file is converted on the fly. They also often support subtitles and audio track selection.
⚠️ Please note: When using free versions of third-party apps, streaming may be interrupted at certain intervals or accompanied by ads. For continuous use, consider purchasing the full version.
Advanced users can create their own media server on a PC and stream its contents to a TV via a phone, but this requires a more complex network setup.
Troubleshooting and diagnostics
Despite the simplicity of the technology, users may encounter a number of issues. The most common is that the TV doesn't appear in the list of available devices. In 90% of cases, this is due to the devices being on different subnets (for example, one on a guest Wi-Fi network and the other on the main network) or client isolation being enabled.
Another common issue is audio and video desync. This often occurs when using Miracast on crowded frequencies. Switching to the 5 GHz frequency (if your router and TV support it) usually solves the problem, as this range is less noisy.
If the connection drops immediately after starting, check your smartphone's power saving settings. Aggressive battery settings can "kill" the background streaming process, treating it as inactive.
⚠️ Note: Android and iOS operating system interfaces, as well as PatchWall firmware versions, are regularly updated. Menu item locations and function names may differ from those described in the instructions. The most up-to-date information can always be found in the official Xiaomi documentation.
For diagnostics, you can use the built-in network test on your TV. Go to Settings → Network → Network Status and check your connection speed. For comfortable streaming of Full HD content, the speed should be at least 10-15 Mbps.
Secret code to reset the network
In some firmware versions, resetting network settings can be done through the engineering menu, but it is safer to do this through a standard router reset or by forgetting the network on both devices and reconnecting.
Comparison of connection methods
The best method depends on your goals. If you simply need to show photos or play a YouTube video, the built-in Chromecast is ideal. For sharing your smartphone screen (for example, a map or a game), Miracast is a better choice. For control and deep integration, use Mi Remote.
Each method has its own pros and cons in terms of image quality, latency, and ease of use. It's important to experiment and choose the option that works best for your specific network conditions.
Keep in mind that wireless connection quality will always be inferior to wired connection quality, but the ease of use outweighs this disadvantage in most home use cases.
Why can't my phone detect my Xiaomi TV?
Check if discovery mode is enabled on your TV (Miracast requires explicit activation). Ensure both devices are on the same Wi-Fi network (same SSID). Restart your router, as multicast packets may be stuck.
Is it possible to connect without a Wi-Fi router?
Not all Xiaomi models support Wi-Fi Direct for screen mirroring. A hotspot is usually required. While some apps allow you to create a hotspot on your phone, this will result in internet connection loss on the TV unless your phone can simultaneously broadcast Wi-Fi and receive data (a rare occurrence).
How to improve picture quality during broadcasting?
Use the 5 GHz frequency, move the router closer to the TV, and close bandwidth-consuming background apps on your phone. Also, make sure there are no heavy apps running in the background on your TV.
Does broadcasting work via mobile internet?
Chromecast and DLNA technologies require a local network. If your phone is on mobile data (4G/5G) and your TV is on Wi-Fi, they won't see each other. To stream, you'll need to either connect your TV to your phone's mobile hotspot (which uses up your phone's data) or use a cable.