Modern Xiaomi smartphones have powerful screens, but to view content in high resolution, you often want to use a large TV display. Wireless data technology makes it easy to display an image or video on the LG Smart TV screen, eliminating the need to search for cables and adapters. This is especially convenient when you need to show photos to guests or run a movie from an online cinema in maximum quality.
The main advantage of using Wi-Fi Direct or embedded broadcast protocols is that there are no delays and no complex setups. You don't need to be an expert in networking to connect devices from different manufacturers. It's enough that both gadgets are on the same local network, and the system itself will offer affordable connectivity options.
In this article, we will look at all the current ways of connecting, from the standard “throw” screen to the use of specialized applications. We will look at the nuances of working with the MIUI interface and the webOS operating system so that you can choose the best method for your situation.
Device preparation and network verification
The first and most critical step is to ensure the right network environment: both Xiaomi smartphone and LG TV must be connected to the same Wi-Fi network. If you have a dual-band router, make sure that both devices sit on the same frequency, preferably 5 GHz, as it provides higher bandwidth for video streaming.
Check to have the Smart Share feature or similar device discovery service on your TV. In some LG models with webOS, this may be called Mobile Device Connection. Without an active search service, the TV will simply not see a request from your phone, and all connection attempts will fail.
⚠️ Note: If your router is configured with client device isolation (AP Isolation, phones won't be able to see TV, a feature often included in guest chains of hotels or hostels for security reasons.
It’s also worth updating both devices’ software to the latest versions. Manufacturers regularly release patches that fix Miracast and DLNA bugs. Older firmware may not support new video codecs or encryption standards used by YouTube or Netflix.
☑️ Checking before connection
Use of the built-in Translation function in MIUI
The fastest way to display a picture from a Xiaomi smartphone to an LG TV is to use the system’s “Translation” (Cast) function, which duplicates the phone’s screen in real time using the Miracast protocol, which is ideal for demonstrating the interface of applications, browsers or games that do not support direct TV output.
To activate, lower the notification curtain down and find the "Translation" icon. If it's not on the first screen, click on a pencil or edit button to add a widget to the Quick Access panel. Once turned on, search for available devices will begin. Your LG TV should appear on the list.
Click on the name of the TV, and in a few seconds, the image from the phone will appear on the big screen. The quality of the picture depends on the power of the smartphone processor and the speed of the Wi-Fi channel. If you notice a cursor delay or a jerk of the video, try approaching the router or reduce the screen resolution in the phone settings.
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To reduce latency when playing or working with the interface, close background applications that consume traffic, such as torrents or cloud syncs.
It's worth noting that when you use this method, the phone screen doesn't go out, and the sound will also go through the TV speakers. This creates a complete copy of what's happening on the smartphone display. If you just need to watch the video instead of showing the desktop, this method may not be the most energy-efficient.
Broadcasting through YouTube and streaming services
If you want to watch videos from YouTube, Netflix or other platforms, it doesn't make sense to use screen duplication, and it's much more effective to use the built-in "Cast" function inside the app itself, in which case the phone acts only as a remote control, and the video stream is downloaded by the TV directly from the Internet, which saves battery and provides better quality.
Open the YouTube app on Xiaomi and find the broadcast icon (a rectangle with Wi-Fi waves) in the top corner. Click on it and select your LG TV from the list. The video will run on the TV, and you can freely use your phone, chat in instant messengers or even turn off the screen without interrupting playback.
This method supports high-quality audio transmission, including Dolby Digital, if your TV and subscription allow it. In addition, video quality automatically adapts to network capabilities, preventing buffering. To work this way, both devices must be logged in to the same Google account, although this is not always a strict requirement.
⚠️ Note: Application Translation may not work if the router is enabled with Guest Network mode, as it often blocks communication between devices within the LAN.
Why can video slow down?
Setup DLNA through the Mi Video app
DLNA technology is best suited to play back video files stored in your phone’s memory. Xiaomi’s standard Mi Video (or simply Video) app is great for this. It can find media servers on the network and transfer files to them without losing quality.
Run the Mi Video app, open the file you want, and click on the TV or Translation icon in the corner of the player. The app scans the network and asks you to choose the device. Unlike Miracast, it only transfers the file itself, so you can lock the phone or use it for other tasks.
LG's TV will receive a video stream and begin decoding it on its own, which means that the file format must be supported by the TV. If the file has a rare codec or container that webOS does not understand, playback will not begin, even if the phone reads it perfectly.
| Parameter | Miracast (Translation) | DLNA (Mi Video) | YouTube Cast |
|---|---|---|---|
| Source video | Ecran phone | File in memory | Internet service |
| Battery consumption | High-pitched | Low. | Low. |
| Use of the telephone | Just watching. | Free. | Free. |
| Dependence on format | No (phone encoding) | Yeah (decodes TV) | No (adaptive flow) |
Use of third-party applications for AirPlay and Miracast
Sometimes the built-in tools are unstable or the TV is not defined by the system, and in these cases, third-party apps from the Google Play store come to the rescue. Popular solutions are TV Cast for LG, AllCast or LocalCast, which have more flexible settings for codecs and search algorithms.
Apps like Web Video Caster allow you to stream videos from sites that don't have official Cast support. You open a site inside the app, it analyzes the video stream and sends a link directly to the LG TV. This bypasses browser restrictions and allows you to watch content from various online cinemas.
Some users are also trying to use the AirPlay protocol on new LG TVs. Although Xiaomi is not an Apple device, there are emulator apps that allow Android smartphones to send a signal the way iPhones do, but the stability of this work depends heavily on the particular router model.
When installing third-party software, pay attention to the permissions requested. The application needs access to the local network and files, but do not give access to contacts or a microphone unless it is stated as a need for voice control.
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Third-party apps often have better compatibility with older LG TV models than standard Android tools.
Solving Connection and Delay Problems
Even with the right setup, there can be technical difficulties. A common problem is desynchronizing audio and video. This is treated in the settings of the player application itself, where there is an audio delay slider. Also helps is rebooting the router, since overflowing the network buffer often causes data packet transmission to crash.
If the TV doesn’t see the phone at all, try manually prescribing it. DNS-servers (e.g. Google 8.8.8.8) in the Wi-Fi settings on the TV. Sometimes providers block the multicast traffic needed to detect devices. DNS Can solve the problem of routing service packets.
Another important aspect is the frequency of the Wi-Fi module, and if the router is old and only runs at 2.4 GHz, and there are many neighbor networks around, the channel can be clogged, switching to a free channel in the router settings or switching to 5 GHz will make things a lot better.
⚠️ Note: When broadcasting in 4K HDR Make sure your router supports Wi-Fi 5 (AC) or Wi-Fi 6 (AX). Older Wi-Fi 4(N) standards won’t physically pull that amount of stream without constant stoppages.