Modern Xiaomi smartphones have powerful screens, but it’s much more convenient to use a large TV screen to watch movies in a company or show photos. Owners of LG devices with the WebOS operating system often face the need to synchronize these devices to enjoy content without unnecessary wires. Fortunately, the Android ecosystem on which MIUI is based provides many built-in tools to accomplish this task.
There are several proven methods of connectivity, each with its own advantages depending on your TV model and the firmware version of your smartphone, you can use the standard Miracast protocol, which is built into most modern TVs, or you can turn to DLNA technology for transmitting media files, and it is worth considering a wired connection over HDMI, which guarantees maximum signal stability.
In this article, we will take a look at each method in detail so you can choose the most suitable option for your situation.We will look at the nuances of customizing Xiaomi’s built-in features, working with LG’s proprietary apps and solving typical connectivity problems. Proper setup will allow you to stream high-resolution video without delay.
Preparation of devices for wireless connection
Before you start any manipulation, you need to make sure that both devices are in the same network conditions. This is a critical step, since most wireless data protocols only work within the same local area network. If your router is sending out a signal at 2.4 GHz and 5 GHz, make sure that both the phone and the TV are connected to the same frequency, although modern routers often combine them into a single network.
Check the software on both gadgets. On an LG TV, go to the settings menu and find the General → About TV → Update Check. On a Xiaomi smartphone, open Settings → About Phone → MIUI version and press the check button. Outdated Wi-Fi module drivers can cause connection breaks or complete lack of visibility of devices to each other.
⚠️ Note: If you use a guest Wi-Fi network or a client isolation network, devices will not be able to “see” each other.
Make sure your TV has a Smart Share feature or similar device detection service on it. Depending on the year of the LG model, this option may be called differently, but it is responsible for the visibility of the TV to external signal sources. Without activating this service, connection attempts will be unsuccessful, even if all other settings are correct.
☑️ Checking before connection
Broadcasting through the built-in Translation function in MIUI
The fastest way to bring a Xiaomi smartphone screen to an LG TV is to use the system function “Translation” (Cast). This technology is based on the Miracast standard, which allows you to transmit an image in real time without loss of quality. To start, open the notification curtain and find the icon “Translation” or “Projection”. If there are no icons, go to Settings → Connection and Sharing → Broadcast.
Once activated, the phone will start searching for available devices on the network. The screen should show a list that will indicate your LG TV (often with a prefix [LG] or a model, for example, 43UM7000). Click on the device name, and after a few seconds the image from the mobile display will appear on the large screen.
- 📱 Open the curtain control panel and find the "Translation" icon».
- 📺 Wait for the name of your TV to appear. LG list.
- 🔗 Click on the device to establish the connection.
- ✅ Confirm the connection on the TV screen if you receive a request.
It is worth noting that when using this method, the screen of the smartphone and TV are completely synchronized, which means that any notifications, incoming calls or messages will be visible to everyone in the room. In addition, active use of the phone while watching can lead to micro-image delays, since the processor is busy processing the interface.
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To reduce image latency, close the background apps on your smartphone before you start the broadcast, which will free up the CPU and Wi-Fi module resources.
Using the LG ThinQ application for content management
LG has developed its own LG ThinQ app (formerly LG TV Plus) that turns a smartphone into a universal remote and media server, a technique that differs from simple screen broadcasting in that it allows you to transfer specific files (photos, videos, music) directly to the TV media player without loading the phone's processor with video stream encoding.
Once installed, launch the app and sign up or log in to LG. The program will automatically find the TV on the local network. You will need to add the device following the instructions on the screen and confirm the pairing with the code that appears on the TV display. Once successfully connected, you will access the file system of the smartphone directly from the TV remote.
The advantage of this is that it's stable, because the TV decodes the video itself, the picture quality is high, and the smartphone battery is consumed much slower than mirror mode, but it's not possible to stream the game screen or browser in real time through LG ThinQ, the method is sharpened specifically for media files.
Why can't the app see the TV?
Broadcasting via Google Home and Chromecast
Many of LG’s modern TVs support Chromecast technology, which allows content from apps that support the feature (YouTube, Netflix, VLC, Google Photos) to be streamed directly to the TV, and the Google Home app, which is Google’s smart home control center, must be installed on the smartphone to work with this method.
Open the Google Home app and find your TV in the device list. Click on the TV icon and then select the "Cast my screen" button. The phone will alert you that everything that happens on the screen will be broadcasted and ask for permission. Once confirmed, Xiaomi's display content will appear on LG TV.
This method is especially handy if the standard "Translation" feature in MIUI is unstable or does not find the TV.The protocol from Google often has better optimization and lower latency.It also allows you to use the phone for other tasks without interrupting video playback if you stream content from a supported app rather than the entire screen.
| Parameter | Miracast (Translation) | Chromecast (Google Home) | DLNA (ThinQ) |
|---|---|---|---|
| Type of transmission | Screen mirroring | Mirror or flow | File transfer |
| Dependence on the phone | High (screen should be on) | Medium/Low | Low. |
| Quality. | Depends on the Wi-Fi signal. | Adaptive, usually high | Original file |
| Sound. | Broadcast on TV. | Broadcast on TV. | Broadcast on TV. |
Connecting via HDMI adapter
If the wireless connection is unstable or requires the transmission of images in maximum quality without compression, the best solution will be a cable connection. USB Type-C can support video output, but this feature is not available on all models. USB-C to HDMI.
It’s important to understand that video output support depends on the version of the USB standard in your phone. Budget models often have a USB 2.0 port that can’t transmit video signals, limited to charging and data transfer. Flagship and mid-budget series (for example, Xiaomi 13, Xiaomi 12, some Lite series models) are more often equipped with ports that support DisplayPort Alt Mode.
⚠️ Attention: Not all cables and adapters are the same. Cheap adapters may not work or cause ripples on the screen. Use certified adapters with an active signal conversion chip.
To connect, simply insert the adapter into the smartphone charging socket and the HDMI cable that goes to the TV. Switch the signal source on the TV to the appropriate port (for example, HDMI 1). The image should appear automatically. If this does not happen, check the phone's settings for Advanced Settings or Connections, where you may need to activate HDMI mode.
Solutions and settings of permission
Even when you set it up properly, there can be situations where the image is missing, slowing down or not having sound. One of the common problems is that the screen resolution is not matched. If the phone is trying to output a 4K signal and the TV only supports Full HD, or vice versa, conflicts can arise, in which case manual resolution adjustment in the engineering menu or through special applications to change the density of DPI helps.
Sound problems are often solved by switching audio output. When connected over Wi-Fi, sound can continue to go through the phone speaker. In this case, in the notification curtain or in the Bluetooth/Connection settings, you should explicitly select the output device - your LG TV. Also make sure that the TV is not on TV-only for sound if external acoustics are used.
If the connection is permanently broken, try changing the Wi-Fi channel on the router. Congestion of 2.4 GHz bands by neighboring networks often leads to loss of data packets during broadcasting. Switching to a free channel in the 5 GHz band significantly improves the stability of the high-definition video stream.
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The stability of wireless broadcasting depends on the quality of the Wi-Fi signal. To view video in 4K without buffering, it is highly recommended to use a router that supports Wi-Fi 5 (AC) or Wi-Fi 6 (AX) and connect both devices to a 5 GHz network.