Modern Xiaomi smartphones have powerful screens and multimedia capabilities that you often want to demonstrate on the big screen. Owners of devices with a shell MIUI or HyperOS can face difficulties when trying to display an image on the TV, as standard protocols can be called differently. Understanding the principles of wireless data transmission will help to avoid confusion and save time on setup.
There are several core technologies used for screen duplication: Miracast, Google Cast, and proprietary solutions from TV manufacturers. Xiaomi phone supports most of them out of the box, but sometimes requires activation of hidden features. In this article, we will discuss in detail all the ways of connecting, from the regular system tools to the use of specialized software.
The quality of the image transfer depends on the speed of your Wi-Fi router and the distance between devices. For comfortable viewing of high-resolution video or games, you need to provide a stable connection in the 5 GHz band. Ignoring this requirement can lead to image delays or sound dissynchronization.
Preparation of network and equipment for work
The first and most critical condition for successful synchronization is to have all devices on the same local network. Your Xiaomi smartphone and Smart TV should be connected to the same router. If you have a dual-band router, make sure that both devices are running at the same frequency, preferably 5 GHz, as it provides higher bandwidth.
⚠️ Note: Use of guest Wi-Fi network or customer isolation (AP Isolation) on the router will completely block the phone from detecting the TV. Make sure that the router settings allow the devices to see each other.
It’s also worth checking the software’s relevance on both devices, with Xiaomi smartphones being responsible for this in Settings → Phone, and TVs being responsible for the system update menu. Outdated Wi-Fi module drivers may not support modern video coding standards.
To ensure maximum stability, it is recommended to close the background applications on the phone that actively use the Internet, such as torrents or downloads in the browser, which will free up the channel for transmitting a video signal without losing data packets.
☑️ Checking before connection
Use of the built-in Translation function in MIUI
The easiest way to do this without having to install any additional software is to use a system utility, which can be called Translation, Wireless Monitor or Cast in the MIUI shell, and can be found through the control panel or in the connection settings menu.
Once activated, the phone will start searching for available signal receivers within range. If your TV supports Miracast technology or has a built-in Chromecast, it will appear in the list of available devices. Click on your TV name to initiate a connection.
Some TVs require manual confirmation of connectivity, and a code request or a "Allow" button may appear on the TV screen. Once paired successfully, the image from the Xiaomi phone will be fully copied to the big screen.
What to do if the TV is not found?
It's important to note that when you use this method, the phone screen needs to be turned on, and if the smartphone display goes out, the image on the TV goes out, because it's the video stream from the screen, not the content of the application.
Broadcasting via Google Home and Chromecast
For TVs with Android TV or Chromecast built-in, the most stable method is to use the Google ecosystem. You will need the Google Home app, which can be downloaded from the Play Market store if it is not preinstalled.
Once you have launched the app and logged in to your Google account, click on your TV icon in the device list. From the menu that opens, select the option "Translate screen," which often works more consistently than standard Miracast, especially when watching videos from YouTube or Netflix.
- 📺 Open the Google Home app on Xiaomi.
- 🔍 Select your TV from the list of available devices.
- 📲 Press the button "Cast my screen).
- ✅ Confirm the action in the system pop-up window.
The advantage of this method is the ability to control the broadcast from other devices associated with the account, as well as better compression of the video stream. However, it requires the availability of Google services, which may be limited in some new smartphone models or in other regions.
Specialized applications from TV manufacturers
Major TV makers often develop their own apps to improve compatibility with smartphones, such as Samsung’s SmartThings app, LG’s LG ThinQ app, and Sony’s Video & TV SideView app.
Installing such an application on a Xiaomi phone allows not only to duplicate the screen, but also to use the smartphone as a remote control, transfer files and run media content directly from the phone’s memory via DLNA. This reduces the load on the smartphone processor, since the TV plays the file itself.
The setup process usually boils down to downloading an app from the Mi Store or Play Market, after which the program itself will find the TV on the network. The interface of such programs is often more functional and contains settings for image and sound quality.
| TV brand | Annex | Miracast support | DLNA |
|---|---|---|---|
| Samsung | SmartThings | Yes. | Yes. |
| LG | LG ThinQ | Yes. | Yes. |
| Sony | Video & TV SideView | Yes. | Yes. |
| TCL / Philips | Rakuten TV / Android TV | Depends on the OS. | Yes. |
The use of proprietary software is especially important if standard methods are unstable, and TV developers are better aware of the features of their encryption and data protocols.
Compatibility problems and signal delay
One of the common problems with wireless connectivity is the desynchronization of audio and video, or the noticeable delay of the mouse cursor and games, which is because the video signal is encoded, transmitted over Wi-Fi, decoded by the TV and displayed on the screen. Each step takes time.
To minimize delays (input lag), try to place the router as close as possible to the area of use of the devices. The use of repeaters (signal amplifiers) can increase ping, which will adversely affect the smoothness of the picture in dynamic scenes.
⚠️ Note: When connected via Bluetooth adapters or older standard routers 802.11n (2.4 GHz) delay may reach 200-300 MS, which makes it impossible to play a comfortable game of shooters or fighting games.
If you see compression artifacts, "squares" in an image or connection breaks, try lowering the output resolution in your phone settings. Going from 4K to 1080p will significantly reduce the load on the communication channel.
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For games, use a wired connection or special TV game modes if wireless communication gives a large delay.
Alternative solutions and third-party software
If Xiaomi and TV are not available, universal translation apps come to the rescue, with AirScreen, Web Video Caster and BubbleUPnP leading the way.
These programs often broadcast DRM-protected content that is blocked by standard methods, such as some streaming services prohibit the display of images through Miracast, but allow you to do so through the built-in browser with Cast support.
Installing such software requires permissions to record the screen and access the local network. Once set up, you can broadcast not only the entire screen, but also individual browser tabs or video files of specific formats.
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Third-party applications are a “plan B” that often solves compatibility problems when system protocols are powerless.
Physical methods of connection, such as HDMI adapters, are also not to be forgotten. For Xiaomi phones with USB Type-C 3.0 or 3.1 port, there is the ability to display images via a digital signal, which guarantees no delays and maximum picture quality.