Modern users are rarely satisfied with viewing content exclusively on the screen of a smartphone, since a diagonal of 6 inches is physically unable to convey all the beauty. 4K-Video or the scale of modern games. TV 4S, Android-equipped TV, It provides a wide range of multimedia experiences, allowing you to turn the living room into a full-fledged home theater. The process of transferring an image (screen mirroring) or streaming (casting) requires the correct configuration of both devices, but the result is worth it.
There are several proven methods of connection, each with its own technical features and use cases: you can use Miracast’s built-in protocols for full screen cloning, Chromecast technology for transferring media content from applications, or DLNA for working with files. In this article, we will discuss each method in detail so that you can choose the most suitable one for your situation.
Before you start setting up, you need to make sure that both devices are on the same local Wi-Fi network, as this is a basic requirement for stable data transfer without delay. Ignoring this rule is the most common reason why the phone does not see the TV or the connection constantly breaks at the most inopportune moment.
⚠️ Warning: Make sure your router does not use the client partition function" (AP Isolation, which prevents devices within the same network from communicating with each other.
Equipment preparation and basic network setting
The first step to successful synchronization is a competent organization of Wi-Fi connection. Xiaomi Mi TV 4S supports dual-band networks, however, to ensure maximum bandwidth when transmitting high-resolution video, it is better to use a frequency of 5 GHz. If your router distributes two networks with the same name (Smart Connect), try to temporarily separate them to force the equipment to connect to a faster range.
Check the software version on your TV, as old firmware may contain bugs that prevent external devices from being detected. Go to Settings → Device → System Update and make sure the latest available version of MIUI for TV is installed.
On the smartphone, you should also update the system components responsible for wireless connections: owners of Android devices are advised to check the updates to Google Play Services, and iPhone users - the relevance of the iOS version, since the AirPlay protocol (through third-party applications) may not work correctly on older versions of the OS.
☑️ Checking connection readiness
Signal stability is critical for streaming. If there are too many walls or distances between the router and the TV, image artifacts or sound dissynchronization can occur, ideally the router should be in line of sight or through a single non-bearing wall.
Use of the built-in Cast (Chromecast) function
The most popular and convenient way is to use the native broadcast function built directly into the Android TV operating system. This method does not require installing additional applications on the TV and works out of the box with most modern smartphones based on Android and iOS.
To start the broadcast, open the app on your phone that you want to see on the big screen (YouTube, Netflix, Chrome browser). Find the wave rectangle icon in the corner, which is the universal Cast symbol.
- 📺 Choose Xiaomi Mi TV 4S from the proposed list of devices to start the transfer.
- 📱 Make sure that a notification of a successful connection to a media device appears on the phone screen.
- ▶️ Control playback (pause, rewind, volume) is now carried out through the interface of the smartphone.
The main advantage of this method is that the TV itself downloads the video stream from the Internet, unloading the phone's processor, so you can fold the app, answer a call, or even leave home (if the app supports remote control), and the video will continue to play.
What if the Cast icon doesn’t appear?
Screenplay via Miracast (Wireless Display)
If your goal is not to show a video from a particular app, but to completely clone the screen of your smartphone (for example, to show a presentation, photo album or game without Cast support), you will need Miracast technology. In the Xiaomi ecosystem, this feature is often called “Wireless Monitor” or “Translation”.
On the Xiaomi Mi TV TV 4S You need to activate the signal reception. Go to the app menu and find Wireless Display or Mi Mirror. Once you start, you'll see a wait for the device's name to connect and maybe you'll see if you can get it on the screen, PIN-code.
Next, the action depends on your phone model. On Xiaomi and Redmi devices, open the notification curtain, find the Translation button (or "Cast") and select your TV. On pure Android (Pixel, Motorola), the path may lie through Settings → Connected devices → Broadcast.
| Characteristics | Chromecast (Cast) | Miracast (screen translation) |
|---|---|---|
| Type of transmission | Streaming broadcasting (URL) | Screen Cloning (Real-Time) |
| Processor booting | Minimum | Tall. |
| Working in the background | Possible. | Impossible (screen active) |
| Quality. | Up to 4K HDR | Depends on the signal (often 1080p) |
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When using Miracast for games, turn on the Do Not Disturb mode on your phone so that incoming notifications do not block the gameplay on the TV.
Consider that screen cloning may be more latent than Chromecasting, because the phone encodes the image in real time, sends it over Wi-Fi, and the TV decodes it. This is not critical for watching videos, but it can be a hindrance in dynamic shooters.
Broadcast from iPhone and iPad (AirPlay)
Owners of Apple equipment may face difficulties, as native support for AirPlay on Xiaomi TVs with Android TV is not implemented in all regions and firmware versions. However, this does not mean that connecting the iPhone to the Xiaomi Mi TV 4S is impossible.
The most reliable way to install a special application on the TV is to install a receiver from the Google Play Store. Popular options include AirScreen, AirPin(PRO) or Receiver for AirPlay. Once installed, the TV emulates the Apple TV device, becoming visible to your iPhone.
Run the app installed on your TV, then on your iPhone, open Control Point (swipe down from the top right corner or up from the bottom, depending on the model). Click on the Screen Replay icon (two rectangles) and select your TV from the list.
- 🍏 Make sure the app on the TV is running and is in standby mode.
- 📶 Check that the iPhone is connected to the same Wi-Fi guest network, if you have one on the router.
- 🔒 When the first connection on the TV screen may appear code that you need to enter on the smartphone to confirm.
⚠️ Note: Free versions of AirPlay emulator apps often have time limits or show ads. For ongoing use, consider buying a paid version.
Transmission quality through third-party emulators is usually high, but synchronization of sound can suffer. If you notice that the sound is behind the video, try changing the buffering or audio codec in the settings of the application on the TV.
Connection problems and how to solve them
Even with the right setup, users can experience errors. One of the most common problems is that the TV doesn't show up on the list of available devices, and 90 percent of the time, it's solved by simply restarting the router, which could freeze and stop properly routing the multicast packets needed to find the devices.
Another reason could be the use of different subnets, if your router is configured so that devices at 2.4 GHz and 5 GHz are on different subnets (different subnets). IP-addresses, for example, 192.168.0.x and 192.168.1.x), They may not see each other, but you need to combine them into one bridge or one router. VLAN.
If the stream is ongoing but is constantly interrupted or the image is “sprinkled” on pixels, try to reduce the video quality in the settings of the source app. Also, disabling the VPN on your smartphone can help, since virtual networks often change the traffic route, making the local device inaccessible.
adb shell wm size
adb shell wm densityFor advanced users with access to ADB (Android Debug Bridge), there is the possibility of fine-tuning the display and network settings, but the standard user just need to make sure that the Wi-Fi drivers of the TV module are up to date.
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Rebooting the router and checking that devices are on the same subnet solves most of the problems with detecting the TV.
Alternative connectivity options
If wireless methods do not give the desired result or the quality of communication in your apartment leaves much to be desired, there is always the “good old” wired technology. Using the USB-C to HDMI adapter (for modern Android) or Lightning to HDMI (for iPhone) allows you to get the perfect image without delay.
Connect the adapter to the smartphone, and HDMI-Connect the adapter and free port HDMI on the back of the Xiaomi Mi TV 4S. The TV will automatically identify the new signal source and switch to it. If this does not happen, click the source select button on the remote (usually the icon square with the arrow) and select the appropriate port.
This method is ideal for games where every millisecond of response is important, or for watching video at maximum bitrate, which is not able to “swallow” an overloaded Wi-Fi channel in an apartment building.
- 🔌 The cable provides a stable connection without interference from microwaves and neighbouring routers.
- 🔋 The smartphone will charge during the broadcast (if the adapter supports Pass-through charging).
- 🎮 Delay input is minimal, which is critical for dynamic games.
And we must not forget that DLNA-If you have downloaded movies on your phone or computer, you can install a player app on your TV (e.g., a video game, VLC for Android MX Player, which will see the shared folders in the local network and will allow you to play content directly, bypassing the smartphone screen.