Modern Xiaomi Mi TV 4S offers users a wide range of multimedia content, allowing them to stream images from a smartphone or tablet directly to the big screen without using wires. Miracast technology, often referred to as the “Wireless Screen” in the Android TV interface, is the standard for high-definition video transmission. It is built directly into the TV operating system, eliminating the need to buy additional adapters or cables.
The connection process may seem complicated only at first glance, but the correct algorithm of actions ensures stable operation of the function. Owners of Xiaomi Mi TV 4S often face the nuances of setting up Wi-Fi Direct and selecting the signal source, which we will discuss in detail. Understanding the principles of wireless data transmission will help to avoid delays and dissynchronization of sound.
In this article, we will take a detailed look at the step-by-step activation algorithm, how to connect different operating systems, and how to solve typical problems. You will learn how to adjust the image quality and why sometimes the device does not see the TV. The key to success is to find both devices on the same Wi-Fi router subnet, which ensures minimal frame delay.
What is Miracast and how does it work on Android TV?
Miracast is a wireless multimedia content technology developed by the Wi-Fi Alliance that allows you to transfer video, audio and images from mobile devices to compatible displays such as the Xiaomi Mi TV 4S. Unlike the Chromecast, which streams data from the Internet, Miracast duplicates the screen of your gadget in real time, creating a mirror image.
The principle of operation is based on the Wi-Fi Direct protocol, which allows devices to connect to each other directly, without the involvement of the router after establishing a connection. This provides the high data transfer speed necessary to display video in Full HD or 4K resolution. Android TV operating system on board the TV acts as a receiver (sink), and the smartphone acts as a transmitter (source).
- 📺 Technology does not require an Internet connection after setting up, using a local network.
- 🔄 Image and sound are transmitted in real time with minimal latency.
- 🛡️ Connection protected by encryption WPA2, prevents interception of data.
It should be noted that the quality of the image depends on the power of the Wi-Fi signal and the load of the channel. If your network is actively downloading files or other streaming devices, artifacts or twitches are possible. For stable operation of the transmission protocol, it is recommended to use a frequency of 5 GHz, if the router and TV support this standard.
⚠️ Attention: When using Miracast, the smartphone battery discharges much faster, since the Wi-Fi module operates in high load mode.
Xiaomi Mi TV 4S Preparation for Wireless Broadcasting
Before you try to connect devices, you need to make sure that the Xiaomi Mi TV 4S is properly configured.First of all, check that both gadgets are connected to the same Wi-Fi network.
Then you activate the signal receiver in the system settings. On the remote, press the menu button and go to the settings section. You need to find the item responsible for external connections or screens. The interface may differ from one version of the firmware, but the logic remains the same.
In the settings menu, look for the Apps or External Logins section, and that's where the system app hides, which triggers the connection standby mode, and without it being active, the phone won't be able to "see" the TV in the list of available projection devices.
☑️ Checking the TV's readiness
It's also important to make sure the TV has the latest version of the software installed.Manufacturers often release patches that improve the stability of the Wi-Fi module and compatibility with newer versions of Android on smartphones.Testing updates takes a couple of minutes, but can save hours of troubleshooting.
Step-by-step: how to turn Miracast on your TV
To start streaming mode on Xiaomi Mi TV 4S, do the following: Take the remote and press the button to call the app menu. Among the installed programs, find an application called Wireless Screen (or Wireless Display / Miracast). Launch it.
When you start up, you'll have a connection waiting interface, and it'll show you your TV name, which will be visible to other devices, and it's usually a TV model, like MI TV 4S, maybe with random characters, and remember or write down that name, and you'll need it to search.
| Parameter | Meaning/Action | Note |
|---|---|---|
| Name of device | MI TV 4S (example) | Displayed in the annex |
| Mode of work | Waiting for connection | Automatically switches to active mode |
| Permission | 1920x1080 / 3840x2160 | Depends on the source of the signal. |
| Protocol | Miracast / Wi-Fi Direct | Standard for data transmission |
If the app isn’t in the main menu, try using voice search on the remote (if supported) or go to Settings → Device → About TV → Build and check the software version. In some regions, the feature may be called Cast or have a wave rectangle icon.
What to do if the Wireless Screen application is not available?
Once the standby screen is activated, the TV goes into visibility mode, and now it's ready to receive connection requests from mobile devices, and don't close that window until it's successfully paired.
Connecting Android Smartphone to Xiaomi TV
The process of connecting an Android smartphone may vary slightly depending on the manufacturer’s shell (MIUI, OneUI, ColorOS).However, the basic algorithm remains unchanged. Open the notification curtain and find the Broadcast, Smart View or Projection icon.
Press the button and the phone will start searching for available devices on the network. Your Xiaomi Mi TV 4S should appear in the list. Click on it to start pairing. A confirmation request may appear on the TV screen, which must be confirmed by the remote.
- 📱 Nana Xiaomi/Redmi/Poco: The function is called “Translation” in the curtain or in the application “Mi Remote».
- 🌌 Samsung: The feature is called “Smart View” in the Quick Settings panel.
- 🔵 Nana Huawei/Honor: Look for the “Wireless Projection” item in the control center.
Once you've successfully connected, the image from the phone is duplicated on the TV, so you can switch the phone to horizontal mode, and the picture on the TV will also turn, and you can use on-screen or volume buttons on the phone to control the video playback.
⚠️ Warning: If your phone says "Didn't connect," try restarting your Wi-Fi router. Often the problem is overflowing the table. ARP-router addresses.
💡
Use Do Not Disturb mode on your smartphone while watching so that incoming notifications don’t overshadow the image on your TV.
Screen broadcast from iPhone and iPad (iOS)
Apple owners cannot use the standard Miracast protocol directly because Apple’s ecosystem uses its own AirPlay technology, but the Xiaomi Mi TV 4S based on Android TV often has built-in AirPlay support or makes it easy to activate.
Check your TV settings: go to Settings → Apple AirPlay and HomeKit. If you have one, turn it on. If there is no built-in support, you will need to install an emulator app from the Google Play Store on your TV, such as AirScreen.
Once you install and start the emulator, open the Control Point on your iPhone (swipe down from the top right corner). Press the Screen Repeat button (two rectangles). Select your TV from the list. An image from the iOS device will appear on the big screen.
AirPlay transmission quality on Android TVs is usually higher than Miracast, thanks to better video stream coding.Latency can also be less, which is important for games or presentations. Make sure that Bluetooth is on on iPhone and TV to facilitate initial pairing.
Set up a Windows laptop to output to TV
Laptops running Windows 10 and 11 have built-in Miracast support. To start streaming, press the Win + K key combination. On the right, the Connect panel will open, where you will start searching for available wireless displays.
Find your Xiaomi Mi TV 4S and click on it. The system will try to establish a connection. Unlike smartphones, Windows can offer to choose the projection mode: "Duplicate", "Expand" or "Second screen only".
The diagnostic path in Windows:
Settings → System → Display → Multiple displays → Connect to a wireless displayExpand mode allows you to use the TV as a second monitor, dragging and dropping program windows onto it. This is convenient for working or watching videos in one window while other tasks are open on the laptop screen.
💡
For games from a laptop on the TV, use the “Second Screen Only” mode to reduce the load on the graphics card and remove cursor desynchronization.
Solution: TV cannot see the device
The most common problem is that devices are on different networks. Make sure that both the phone and the TV are connected to the same network (for example, not to the router's guest network, but to the main one). Sometimes routers create separate networks for 2.4 GHz and 5 GHz, and if devices in different frequency bands with client isolation, communication will not be established.
The second reason could be your firewall or antivirus settings on your PC that block incoming connections, try temporarily disabling network protection or adding your TV to your trusted device list, and it's also worth checking if Guest mode is enabled in your Wi-Fi settings.
- 📶 Reboot your router, TV and smartphone – it solves 80% of visibility problems.
- 📡 Make sure the router does not include “Customer isolation” AP» (AP Isolation).
- 🔄 Update the Wireless Screen app or TV system software.
If nothing helps, try resetting your network settings on your TV via Settings → Network → Reset.This will remove saved Wi-Fi passwords and return network modules to factory settings, which often eliminates software failures of the Wi-Fi Direct stack.