Modern smart TVs from Xiaomi offer a wide range of multimedia content capabilities, and one of the key features is support for wireless image transfer technology. Miracast is a standard developed by the Wi-Fi Alliance, which allows you to broadcast the screen of a smartphone, tablet or laptop directly to a large display without the use of wires. Owners of Mi TVs often face the need to quickly show photos from a holiday or run videos from an application that does not support the built-in Chromecast, and this protocol comes to the rescue.
Unlike proprietary solutions, Miracast is powered by Wi-Fi Direct technology, which means you don’t need an active router or internet access point to connect between devices, making the broadcast process more stable and less dependent on home network congestion. Understanding how a wireless display works will help you leverage the potential of your Xiaomi appliances and avoid common connection errors.
In this article, we will discuss how to activate the function, what nuances exist when working with different operating systems and what to do if the connection is cut. A key feature of the Miracast implementation in the PatchWall shell is the integration of the function into the standard signal source menu, which makes it easier for inexperienced users to initial setup. Deep immersion in technical details will allow you to enjoy content in high resolution without delay.
Technological foundations of wireless broadcasting
Miracast’s technology is based on Wi-Fi Direct, which allows devices to discover each other and share data directly, bypassing traditional wireless network infrastructure. When you try to connect a smartphone to a Xiaomi TV, it’s this protocol that creates a secure communication channel. It’s important to understand that while you don’t need a router to work, both devices must support appropriate encryption standards, usually WPA2, to prevent unauthorized capture of the transmitted image.
In the Android ecosystem, this feature is often referred to as Translation, Smart View, or Wireless Display, while WindowsMi TV automatically recognizes the type of incoming signal and adapts codecs to minimize latency. H.264 is the most common video compression standard in this protocol, providing a balance between picture quality and data transfer speed.
It is worth noting that the quality of the broadcast depends on the power of Wi-Fi modules in both devices. If your smartphone or Xiaomi TV supports only the 2.4 GHz band, micro-latency is possible during dynamic scenes in games or movies. Using the 5 GHz band significantly improves the stability of the connection, but requires that both devices are in the zone of confident reception of the signal.
- 📡 The protocol works at the Wi-Fi Direct level, creating a direct connection between gadgets.
- 🔒 Encryption WPA2 Protects the data transmitted from external interference.
- 🎬 Support for codecs H.264 and AAC Allows video and sound to be broadcast synchronously.
- 📱 Compatible with Android, Windows and some versions of iOS (via third-party apps).
⚠️ Note: With active Miracast connection, the smartphone battery can discharge much faster due to the high load on the Wi-Fi module and video encoding processor.
Activation of the feature on Xiaomi TVs
The process of turning on the wireless display on Xiaomi TVs is as simple as possible by the company’s engineers, but the path to settings can vary depending on the version of the Android TV or PatchWall operating system. In most cases, you do not need to install additional applications, since the functionality is already built into the firmware. First, you need to make sure that your TV is on and in mode with smart functions, and not just as a monitor for cable TV.
To activate the connection standby mode, go to the signal source menu. On the remote control, click the button responsible for selecting the input (often indicated as Input or an icon of the square with the arrow). In the list that opens, select Wireless display or Wireless display. After selecting the TV will go to standby mode, and the screen will show a message that the device is ready for connection, often displaying the model name, for example, Mi TV 4S or Mi Box.
In some updated versions of the interface, the feature can be brought to a separate application called "Miracast" in the list of installed programs. If you do not find a item in the signal sources, try to find it through voice search or in the Applications folder. Make sure that Wi-Fi is enabled in the network settings, even if you do not plan to go online, since the module must be active for Wi-Fi Direct to work.
☑️ Checking readiness TV
If the broadcast screen is up but the image is not being transmitted, check to see if the TV is power saving mode, which may limit the operation of network modules, and make sure that the system time and date on the Xiaomi TV are set correctly, as time dissynchronization sometimes prevents the establishment of a secure connection.
Configuring connection from different devices
Connecting your smartphone or computer to your Xiaomi TV requires you to perform certain actions on the source side of the signal.The process may vary depending on your gadget’s operating system. Below are instructions for the most popular platforms so you can choose the right one.
For Android-based devices (Samsung, Xiaomi, Honor, etc.):
1. Lower the notification curtain and look for the “Translation”, “Smart View” or “Projection” icon.
2. Enable the function and wait for the list of available devices to appear.
3. select your Mi TV from the list.
4.A request for permission of connection may appear on the TV screen, which must be confirmed by the remote control.
For computers running Windows 10/11:
1. Press the Win + K key combination to call the connection menu.
2.The system will begin searching for wireless displays.
3. Select a Xiaomi TV in the list.
4. After connecting, you can choose the mode of operation: "Duplicate" or "Expand" the screen.
What if Windows can’t see the TV?
Apple owners should know that native Miracast support is not available in iOS, as the company uses its AirPlay protocol. However, if your Xiaomi TV supports AirPlay 2 (2019 models and newer), you can stream the screen without third-party programs. Older models will require the installation of an intermediary application that emulates the reception of Miracast signal, such as AirScreen.
| The device | Name of function | Combination/Way | nuance |
|---|---|---|---|
| Android | Broadcasting / Smart View | Notification curtain | Requires Android 4.2+ |
| Windows 10/11 | Connect | Win + K | We need a Wi-Fi adapter. |
| macOS | AirPlay (through emulation) | Item on the menu | AirPlay is required on TV |
| iOS | Screen replay | Item at the Control Point | It works through AirPlay. |
Solving common problems and errors
Despite standardizing the technology, users often face difficulties in first running.One of the most common problems is when a Xiaomi TV just doesn't see the phone in the list of available devices. 90% of the time this is because the devices are in different frequency bands or networks. Make sure if you use a router, both gadgets are connected to the same network (for example, both to 2.4 GHz or both to 5 GHz discovery), although for a clean Miracast this is not always critical, but for packets it is important.
Another common complaint is that audio and video are out of sync or artifacts appear on the screen. Latency is inherent in technology, but it should not exceed 100-200 ms for comfortable viewing of photos and videos. If the delay is high, try to bring the phone closer to the TV, remove obstacles between them or restart the Wi-Fi module on both devices. Sometimes it helps to turn off Bluetooth on a smartphone, as it can create interference in the 2.4 GHz range.
If the connection is established but immediately breaks, the problem may lie in the power saving settings of the smartphone. Aggressive algorithms MIUI or other shells can kill the broadcast process to save charge. Add the Translation application or the system service of the wireless display to the exclusion of the power saving mode.
⚠️ Note: If you have an image when you connect, but there is no sound, check your sound settings in Windows or Android. Often, the default system leaves the audio output to the phone's speakers rather than switching it to the phone's speakers. HDMI/Wi-Fi television-channel.
Optimizing image quality and performance
To get the clearest picture, it is important to consider the screen resolution. If your smartphone has a resolution of 2400×1080, and Xiaomi TV supports only 1920×1080 (Full HD), then the phone will scale the image, which can lead to loss of text clarity. In the phone settings, you can sometimes force the output resolution, but you better rely on automatic matching of handshake protocol parameters.
Screen refresh rates also play a role. Most Mi TVs run at 60Hz. If your phone tries to stream content at a higher frame rate, there may be jerks. For games, using Miracast is not always justified because of input lag, which can be between 100 and 300ms. For watching movies and presentations, it is not critical, but for shooters or racing it is better to use wired connection or in-app streaming.
💡
To reduce delay when broadcasting games, close all background apps on your smartphone and turn off automatic photo synchronization to free up the Wi-Fi channel.
Use 5GHz Wi-Fi whenever possible. This range is less noisy with neighbouring routers and microwave ovens, which provides a more stable data flow.If your router is dual-band, split the networks (give them different names) to force both devices to connect to 5GHz.
Miracast Comparison with Alternative Technologies
Users often confuse Miracast with other ways of transmitting content, such as DLNA, Chromecast or AirPlay. Understanding the difference will help you choose the right method for your task. Miracast is exactly the "mirroring" (cloning) of the screen. Everything that happens on the phone's display, including notifications, incoming calls and desktop, is displayed on the TV.
DLNA works differently: it's a protocol for transmitting media files. You pick up a video in a gallery and send it to TV, and then you can turn off your phone screen or do other things — the video will be played by the TV. Chromecast (built into Android TV) also works on the principle of "casting", where the phone acts only as a remote control, and the content is downloaded directly from the TV from the Internet, which saves the battery of the smartphone.
💡
Miracast is ideal for displaying screen, presentations and games that don’t require high reaction, whereas DLNA and Chromecast are better suited for watching online video without draining your phone.
In the Xiaomi ecosystem, all of these technologies are often intertwined: a TV can simultaneously receive a Miracast signal, have a built-in Chromecast and emulate AirPlay. The choice of the specific method depends on whether you need to see the smartphone interface on the big screen or simply output a video file.