The modern multimedia capabilities of the Xiaomi Mi TV 4S make it possible to turn the gadget into a full-fledged entertainment center using wireless image transfer technology. Miracast is the de facto standard for broadcasting the contents of the screen of a smartphone or tablet on a large diagonal without using unnecessary cables. Device owners often face difficulties in the initial setup, since in the TV interface this option may be called differently or hidden in specific menu sections.
In this article, we will discuss the algorithm for activating wireless projection, look at the nuances of the Android TV operating system and offer solutions for common connection errors. Understanding the principles of Wi-Fi Direct and data protocols will help you quickly establish a stable connection between a mobile device and a TV. It is important to note that the quality of the picture depends on the speed of your wireless router and the distance between devices.
To get started, make sure your router supports 802.11n or higher, as high-resolution video transmission requires significant channel bandwidth. Xiaomi Mi TV 4S TVs use the built-in 2.4/5GHz Wi-Fi module, which provides flexibility in choosing the frequency range to minimize interference. Proper preparation of network equipment is the first and most important step to successful synchronization.
Preparation of equipment and network infrastructure
Before you start software settings, you need to physically be able to have a stable connection. Miracast technology works on top of Wi-Fi protocols, so signal quality is critical. If the router is in another room or behind thick walls, image delays and sound desynchronization are possible.
It is recommended to connect the Xiaomi Mi TV 4S to a 5 GHz network if your router supports dual-band operation, which will significantly reduce interference from neighboring networks and household appliances, which usually operate in the congested 2.4 GHz band.
Also, make sure that the smartphone you are planning to stream does not include a traffic or energy saving mode that can block the background transmission of large amounts of data.
- 📶 Make sure the router and TV are in line of sight or through the same wall.
- 🔌 Turn it off. VPN-services on the broadcasting device, as they change IP-address.
- 📱 Update the Wi-Fi module drivers on your smartphone to the latest version.
- 🔄 Restart the router before setting up to clean up the connection cache.
⚠️ Note: Do not try to use a guest Wi-Fi network to connect Miracast, as customer isolation on such networks often blocks direct connection between devices.
Search and activate the built-in wireless projection application
In the Android TV operating system that is installed on Xiaomi Mi TV 4S, the signal reception function can be implemented through a system application or a third-party service integrated into the shell. Unlike older versions of firmware, modern interfaces often hide this option in a common application list or in connection settings.
To find the tool you need, use voice search on the remote or go to the Apps section, and you will need to find an app called Wireless Display, Wireless Display, or Miracast, which in some regional firmware may be called Translation or Screen Mirroring.
Once the app is launched, the TV goes into standby mode, and the device name and search instructions will appear on the screen, so it's important to keep this window open until it's paired successfully, otherwise the TV will no longer be visible to external devices.
If a standard app is not found, the system may suggest installing an official Google plugin called Chromecast built-in, which also supports mirroring protocols, although it works on slightly different algorithms.
☑️ Activation of reception mode
Setting up a connection from a smartphone based on Android
The process of connecting a smartphone to a Xiaomi Mi TV 4S may vary depending on the manufacturer of the mobile device and the version of the operating system. In pure Android, the feature is called Translation and is located in the curtain of quick settings or in the Settings menu → Connected Devices.
On Xiaomi and Redmi devices, this feature is called Translation and often requires you to turn on in additional settings. Once activated, the phone will start searching for available displays. When your TV appears on the list, click on it to initiate a connection.
Samsung devices use Smart View technology, which is also based on Miracast standards. After selecting a TV, a request for confirmation of connection may appear on the mobile screen, which must be accepted by the TV remote control, a security measure that prevents unauthorized access to your screen.
Android Menu Path: Settings → Connections → Smart View (or Broadcast)The quality of the transmitted image can be adjusted in the settings of the broadcast application on the phone, and options are usually available to change the resolution or priority of data rate, which is useful in unstable Internet.
- 📲 On iPhone, use the Screen Replay feature in the Control Center (AirPlay support is required).
- 👁️ On request. PIN-code on TV, enter the numbers displayed on the phone screen.
- 🔇 If there is no sound, check the media settings in the “Sound” section of the phone.
- 📶 Make sure the phone does not have “Flight” mode on it».
⚠️ Note: When connected via Miracast, the smartphone battery discharges much faster than usual, since the Wi-Fi module operates in a constant active data transfer mode.
Using Chromecast technology for iOS and Android
In addition to the classic Miracast, Xiaomi Mi TV 4S actively supports the Google Chromecast ecosystem.This is a more modern protocol that allows you not just to duplicate the screen, but to send content directly from applications, freeing up the smartphone for other tasks.
To work this feature on a mobile device must be installed Google Home. After registering the TV in this application, you will be able to stream the contents of the screen or individual tabs of the Chrome browser. This is especially true for iPhone owners, since the native Miracast (AirPlay) on Android TV does not always work stably without additional settings.
The advantage of using the Chromecast is the ability to control playback from the phone: you can pause the video, change the volume or rewind the film without getting out of the couch. In addition, this method is less demanding on the battery of the smartphone, since the main flow of data goes directly from the router to the TV.
To activate, open an app that supports broadcasting (like YouTube or Netflix) and click on the Wave rectangle icon. Select your Xiaomi TV from the list and the video will run on the big screen.
Comparison of data transmission methods and their characteristics
Different connectivity methods have their own technical features that affect the user experience. Understanding the difference between direct mirror (Miracast) and streaming (Cast) will help you choose the best option for a particular situation.
Direct connectivity (Miracast) creates a Wi-Fi Direct tunnel between the phone and TV, bypassing the router once the connection is established, but often requires constant smartphone involvement. Streaming via Google Cast downloads content directly from the Internet to the TV, using the phone only as a remote control.
| Characteristics | Miracast (Translation) | Google Chromecast | DLNA (Media) |
|---|---|---|---|
| Dependence on the phone | High (screen on fire) | Low (can be rolled) | Medium |
| Battery consumption | High-pitched | Low. | Medium. |
| Image quality | Depends on the Wi-Fi signal. | Stable (HD/4K) | Original |
| Support for iOS | No (no attachments) | Yes (via annexes) | Yes. |
Miracast is better suited for gaming and displaying the app interface, as it transmits everything that happens on the screen in real time. To watch movies from online cinemas, it is preferable to use built-in apps on the TV or the Cast protocol.
Diagnostics and Solving Connection Problems
If you can't get the connection the first time, don't panic. The most common cause of failure is out-of-synchronization. IP-Addresses or temporary failure of network services of the Xiaomi Mi TV TV 4S.
Try to reboot the TV completely by disconnecting it from the power grid for 10-15 seconds, which will clear RAM and reset the network settings of the Wi-Fi module, and it is also useful to “forget” the Wi-Fi network in the settings of the TV and reconnect it again by entering a password.
In some cases, the problem is with date and time settings: If the TV is down, security certificates can block the connection to modern Google services and transmission protocols, and check if automatic time synchronization is installed over the network.
- 🛑 Remove the wireless display app from the TV and install it again from the store.
- 📡 Get closer to the router to prevent loss of data packets.
- 🔄 Reset the network settings on your smartphone to factory settings.
- 🔌 Check if the ports are occupied. HDMI other active devices that cause interference.