Modern multimedia capabilities of smart TVs allow you to broadcast images from a smartphone or tablet to a large screen without the use of wires. For owners of Xiaomi Mi TV 4S, this feature is implemented through Miracast technology, which is built into the Android TV operating system. Activation of the wireless display allows you to view photos, videos and even run mobile games on a TV with a diagonal of 43 or 55 inches.
The setup process may seem complicated at first glance, but the Android TV interface is extremely logical and understandable. You do not need to install third-party applications or purchase additional adapters, since the Wi-Fi Direct module is already integrated into the hardware platform of the device. In this article, we will discuss all the stages of connection, consider possible nuances of the system and how to solve typical synchronization errors.
It is worth noting that the quality of the video stream is directly dependent on the stability of the wireless network and signal power. Before setting up, make sure that your router supports 802.11n or 802.11ac standards, which will ensure minimal image latency. It is also important that both devices - the TV and smartphone - are on the same local network for correct detection.
Miracast Technology and Its Features in Android TV
Miracast is a wireless multimedia content standard developed by the Wi-Fi Alliance. Unlike Chromecast, which requires internet and Google account participation for some features, Miracast creates a direct peer-to-peer connection between devices. On Xiaomi Mi TV 4S, this technology is often labeled as a “Wireless Display” or “Wireless Display” on the system menu.
The main advantage of using this protocol is that there is no need for a router to transmit a signal, although for the initial handshake of devices, the presence of a Wi-Fi network is often required. The system encodes the video stream in real time, transmitting it at a resolution of up to 1920×1080 or 3840×2160 depending on the TV model, which allows you to enjoy content in high quality without visible compression artifacts.
It is important to understand that Android TV has its own implementation features, some firmware versions may hide the function in the depth of the menu or require activation through special settings of the developer. In addition, the power consumption of the TV during active broadcasting increases, as the processor actively decodes the video stream.
⚠️ Attention: When using Miracast TV can heat up more than usual, which is a standard operation of the cooling system at a high load on the Wi-Fi module.
For the technology to work smoothly, using a 5GHz bandwidth is critical if your router supports dual-band operation, which will reduce interference with neighboring networks and Bluetooth devices, ensuring a smooth picture without jerking.
Preparation of equipment and preliminary requirements
Before you start the software setup, you need to make sure the physical readiness of the equipment. TV Xiaomi Mi TV 4S must be connected to the power grid and have a stable Wi-Fi signal. Check that the remote controls work correctly, as navigation on the menu is carried out with its help.
The smartphone or tablet that is scheduled to be streamed should also support Wi-Fi Direct. Most modern devices based on Android 5.0 and higher, as well as Windows 8.1/10/11, have built-in support for this standard. Apple devices (iPhone, iPad) use the AirPlay protocol, which is incompatible with native Miracast without installing additional software on the TV.
- 📱 Make sure that the smartphone is enabled Wi-Fi and Bluetooth module.
- 📶 Check that both devices are on the same Wi-Fi network (the same) SSID).
- 🔄 Update your TV firmware to the latest available version via the settings menu.
- 🔋 Charge your mobile device to at least 20% to avoid being turned off during a session.
If you are using a corporate network or a network with an authorization portal (where you need to enter a username and password through a browser), the Miracast connection may not work, in such cases it is recommended to use the access point mode on your smartphone or a personal router.
⚠️ Warning: Antivirus programs or firewalls on a router can block ports needed to detect devices on a local network.
It's also worth checking the free space in the TV's memory. Although the broadcast is in real time, system buffers require free resources to caching the video stream. If the system is slow, close the background applications.
Activation of the wireless display function on the TV
The process of enabling the feature on Xiaomi Mi TV 4S starts from the main screen of the operating system. You need to go to the top menu line where the app icons and settings are located. Find a section that can be called “Apps”, “My apps” or have a folder icon.
In the list of pre-installed system utilities, you should find an application called Wireless Display, which in some regional versions of the firmware may be called "Miracast" or "Screen Mirroring," and launch this application by pressing the central OK button on the remote.
When you start, you'll see a connection waiting window with your TV's name on it, and that name will appear on the list of available devices on your smartphone, at which point the TV will go into active search and wait for incoming connections.
☑️ Checking before connection
The waiting interface usually shows the technology logo and the instruction "Plug in mobile device." Do not close this window until you have completed pairing, otherwise the TV will go out of visibility mode.
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If the Wireless Display app is not listed, try finding it through voice search on the remote by saying the phrase “Wireless Display.”
Configure the connection from a smartphone or tablet
After the TV is ready, we move on to the signal source setting. On Xiaomi, Redmi and POCO smartphones, this feature is often called Translation and is located in the notification curtain or in the screen settings menu. On Samsung devices, it is called Smart View, and on pure Android it is called Translation or Cast.
Open your phone's settings and find the Connections or Connected Devices section. Select the image transfer option. The phone will start scanning the available devices on the network. Your Xiaomi Mi TV 4S should appear on the list.
Click on the name of the TV in the list. The TV screen may request confirmation of connection with or without code. Use the remote to agree to the request ("Accept" or "Allow"). After that, the screen of the smartphone is duplicated on the TV.
- 🔍 Open the Quick Settings Panel on your smartphone swipe from top to bottom.
- 📺 Click on the icon “Translation”, “Smart View” or “Projection».
- 📲 Choose your Xiaomi TV from the list of devices offered.
- ✅ Confirm the connection on the TV if the corresponding notification appears.
In some cases, you may need permission to access media files or a microphone on your smartphone, which is necessary for the correct transmission of sound and video. If the connection breaks, try restarting the Wi-Fi module on your phone.
⚠️ Note: When connecting some models of smartphones, the image may not be displayed on the entire screen, but with black stripes on the sides due to different aspect ratios.
To exit the broadcast mode, just press the “Disable” button on your smartphone or simply lock the screen of the mobile device.
Using the built-in Cast application for broadcasting
An alternative way that often works more consistently than native Miracast is to use the built-in Cast feature in content aggregator apps like YouTube, Netflix or VLC Player.This method uses the Google Cast protocol, which is also supported by Xiaomi Mi TV 4S.
Open an app, like YouTube on your smartphone. In the corner of the video or at the top of the interface, find the wave rectangle icon (broadcast icon). Click on it and select your TV from the list.
Unlike full screen mirroring, this method only transmits a link to the video stream.The TV itself downloads the video from the Internet, which reduces the load on the smartphone and allows it to be used for other tasks while watching.
The advantage of this approach is that it can control playback (pause, rewind) from the phone while the TV is just a monitor, and the picture quality in this mode is often higher, since the TV buffers the flow directly.
If the broadcast icon doesn't appear, make sure the apps on your phone and TV are updated to the latest versions. Also check that the router's settings don't include AP client isolation, which prevents devices from seeing each other.
Compatibility table and connection characteristics
For a better understanding of the technical capabilities of your Xiaomi Mi TV 4S when working with wireless technology, check out the Characteristics table. It will help you determine what the maximum image quality is available in your case.
| Parameter | Meaning/Description | Requirements |
|---|---|---|
| Protocol | Miracast / Wi-Fi Direct | Support for Wi-Fi Direct on the client |
| Max, permission. | 1920×1080 (Full HD) / 4K | Depends on the source of the content |
| Frequency of personnel | 30 FPS / 60 FPS | Requires a powerful Wi-Fi 5 GHz |
| Audio codecs | AAC, MP3, PCM | Standard for Android TV |
| Delay (Latency) | 100-300 ms. | Not recommended for dynamic games |
As you can see from the table, for high-performance games (shooters, racing), the delay of 100-300 ms can be noticeable, but for watching videos, presentations or photos, this value is absolutely acceptable and does not affect comfort.
Using 5GHz band significantly reduces the likelihood of interference and increases channel bandwidth, which is especially important when streaming video in 4K. If your router is dual-band, be sure to connect the TV to a 5GHz network.
Solving Typical Synchronization Problems and Errors
Despite the simplicity of the technology, users can face a number of problems: often there is a situation when the TV does not see the phone or the connection is constantly cut off, the first step should always be to reboot both devices, this clears the cache of network services.
If the image twitches or has a low resolution, check the load on the Wi-Fi channel. downloading files on other devices or torrents can "clog" the channel, leaving no resources for the Miracast video stream.
In rare cases, resetting your network settings on your TV helps. Go to Settings → Network and Internet and select Forget Network, then reconnect by entering your password.
Hidden Developer Settings
The problem may also be in antivirus software on your smartphone that blocks local connections, such as temporarily disabling protection or adding a TV to your trusted device list.
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90% of connection problems are solved by restarting the router and transferring the TV and phone to the same Wi-Fi network (2.4 or 5 GHz).