Modern smartphones of the series Xiaomi Redmi or Black Shark have high-resolution screens that often exceed the capabilities of many budget monitors. However, for viewing shared content, vacation photos, or YouTube videos, a 6-inch diagonal may not be enough. Fortunately, the ecosystem Android and software WebOS LG's smart TVs make it easy to stream images wirelessly, turning your gadget into a remote control and content source for the big screen.
There are several ways to accomplish this task, ranging from built-in system functions Mi Cast and ending with the use of third-party DLNA streaming apps. The choice of a specific method depends on the operating system version, your TV model, and the signal quality in your room. In this article, we'll explore the technical nuances of each data transfer protocol so you can choose the best option for your pair of devices.
Before starting setup, make sure both devices are connected to the same access point. This is a fundamental requirement; ignoring it will result in the devices simply not being able to see each other on the local network. Using mobile data on your smartphone while the TV is connected to Wi-Fi will not work for local mirroring.
Technical requirements and equipment preparation
To ensure stable video streaming without delays or compression artifacts, a number of conditions must be met. First and foremost, this concerns the wireless channel's bandwidth. Modern standards Wi-Fi Direct And Miracast require high data rates, so using the 2.4 GHz band may not be effective enough in noisy environments.
It is recommended to connect both your smartphone and TV to a router operating in the 5 GHz band. This will provide a wider data transfer channel and reduce the likelihood of connection interruptions when watching high-definition video. 4K HDRIf your router supports the standard Wi-Fi 6, this will be an additional advantage for synchronization.
- 📡 Both devices must be in the same subnet (same gateway IP address).
- 📱 Geolocation must be enabled on your smartphone for the device search to work correctly.
- 📺 The TV must support Smart TV technology (WebOS platform).
- 🔋 Make sure your phone's battery is charged to at least 20%, as video streaming requires energy.
⚠️ Note: If you're using a guest Wi-Fi network (Guest Network) on your router, devices may be isolated from each other at the protocol level. To ensure proper mirroring, disable "AP Isolation" in your router settings.
It's also worth checking that your software is up to date. Device owners Xiaomi shell updates are often neglected MIUI or HyperOS, which can lead to bugs in the wireless modules. A similar situation applies to LG TVs: older versions WebOS may have vulnerabilities or not support new video compression codecs.
Using the built-in Mi Cast (Miracast) function
The fastest and most native way to share a screen is to use technology Miracast, which is in the shell MIUI it's called Mi CastThis protocol enables direct connections between devices, eliminating the need for complex server configuration. Images are transmitted in real time, making it ideal for displaying presentations or navigating interfaces.
To activate the feature, pull down the notification shade and look for the "Broadcast" or "Mi Cast" icon. If you don't see the icon, go to the menu. Settings → Connection and Sharing → BroadcastThe system will automatically begin searching for available receivers within the network range.
On your LG TV, you may need to launch the "Screen Share" app, which is pre-installed in the Smart TV menu. Once the TV appears in the list on your smartphone, tap it to pair.
- 🖥️ The image is duplicated completely, including system notifications.
- 🎮 Low input lag makes it possible to use the phone as a gamepad.
- 🔒 The connection is protected by WPA2 encryption.
It's important to note that while the connection is active, the smartphone screen may turn off to save power, but the video stream will continue to be transmitted to the TV. However, some protected apps, such as Netflix or Disney+, may block image output via Miracast due to content protection policies HDCP.
⚠️ Note: Miracast is sensitive to interference. If you notice audio and video out of sync, try moving the router closer or switching to a less crowded Wi-Fi channel.
☑️ Check before connection
Streaming via Google Home and Chromecast
If your LG TV supports the built-in platform Chromecast built-in (or an Android TV set-top box is connected to it), you can use the Google ecosystem. This method is highly stable and features smart power management, as the TV downloads content from the internet itself, and the phone acts only as a remote control.
You will need an app to set it up. Google Home, available in the store Play MarketAfter installation, launch it and find your TV in the list of devices. The initial setup process may take a few minutes as the system checks for protocol version compatibility.
adb shell am start -n com.google.android.apps.chromecast.app/.welcome.WelcomeActivityThis command (provided as a debugging example) indicates that the process is running at the system level. For the average user, simply clicking the "Cast Screen" button in the app menu is sufficient. Unlike Miracast, it broadcasts a video stream rather than a screen image, reducing the load on the phone's processor.
The advantage of this method is the ability to control playback from your phone: you can pause the video, adjust the volume, or rewind without leaving the couch. Furthermore, the picture quality is often higher, since the TV decodes the stream automatically.
- 🌐 Works even when the smartphone screen is off.
- 📺 Supports Chrome browser tab casting.
- 🎵 Allows you to output sound to external speakers via Google Cast.
What should I do if Google Home can't see my TV?
Make sure Client Isolation isn't enabled on your router. Also, try rebooting the router and re-logging into the Wi-Fi network on both devices. Clearing the Google Home app cache can sometimes help.
DLNA media streaming via LG TV Plus app
For playing photos, videos and music stored in your phone's memory, the best technology is DLNAIt doesn't mirror the screen, but rather streams media files for playback on the TV. It's ideal for viewing family media or listening to music.
Official app LG TV Plus (or its new analogue LG ThinQ) provides a convenient interface for managing content. After installation and pairing, you can access your smartphone's gallery using the code displayed on the TV screen.
The app's interface lets you sort files by date, album, or type. You can create playlists and manage the playback queue. In this case, the TV acts as the renderer, and the phone acts as the controller and server.
| Parameter | Miracast | DLNA | Chromecast |
|---|---|---|---|
| Transmission type | Screen mirroring | File transfer | Streaming |
| Load on the phone | High | Low | Minimum |
| Picture quality | Depends on the signal | Original (uncompressed) | Adaptive |
| Work in the background | No (screen active) | Yes | Yes |
Using DLNA is especially useful if the video file format is not supported by your phone's built-in player but is readable by your TV. In this case, transcoding is not required, and you get the original image quality.
Solving latency and image quality issues
Even with an ideal setup, users may encounter artifacts such as flickering images, audio desync, or low resolution. This is often due to wireless channel congestion from neighboring networks. In apartment buildings, the 2.4 GHz band can be completely occupied.
Try manually changing the broadcast channel in your router settings. Channels 1, 6, and 11 are considered optimal for the 2.4 GHz frequency, or any available channels for the 5 GHz frequency. It might also be a good idea to disable Wi-Fi power saving mode in your smartphone settings. Xiaomi (Battery or Advanced settings section).
⚠️ Note: Interfaces and menu item names may differ depending on the firmware version MIUI/HyperOS and LG TV models. If you don't find the feature described, check the official user manual on the manufacturer's website.
Another possible cause of problems could be antivirus software or a firewall installed on the router or in the client application. These can block the ports required for establishing a handshake between devices. Try temporarily disabling the protection to test this hypothesis.
If the image appears blurry, check the resolution settings on your TV. Sometimes the TV automatically detects the source as low quality and applies upscaling. In your LG TV's menu, find the picture settings and select "Scan Only" or "Just Scan" to remove edge cropping.
Alternative apps and third-party solutions
If the built-in tools don't meet your needs, the app store offers many alternatives. Apps like Cast to TV, Web Video Caster or BubbleUPnP provide advanced functionality, including subtitle support, audio track selection, and on-the-fly transcoding.
Some of them allow streaming content protected from regular copying by emulating a DLNA server with certain parameters. This can be useful for watching videos from cloud storage or closed sources.
However, it is worth remembering about security: install applications only from trusted sources, such as Google PlayThird-party software may request excessive permissions to access your data. Please read the privacy policy carefully before installing.
- 📥 Web Video Caster: can extract video streams from web pages.
- 🎵 BubbleUPnP: The best choice for audiophiles and complex media networks.
- 📺 AllCast: A simple interface for quick photo transfer.
Using specialized cables (USB-C to HDMI) remains the most reliable, but least convenient method, as it requires physical connection and often additional adapters for phones. Xiaomi, which do not support video output via USB.
Why doesn't my LG TV detect my Xiaomi phone?
Most often, the problem lies in the different Wi-Fi networks (for example, one network is 2.4 GHz, another is 5 GHz with different SSIDs). Also, check if your antivirus software is blocking local connections. Restarting the router often resolves the issue of a frozen DHCP server.
Is it possible to display a screen on a TV without Wi-Fi?
Without a router, you can use Wi-Fi Direct if both devices support it. A wired connection via a USB-C to HDMI adapter is also possible, but this requires a corresponding port on your phone.
Does broadcasting affect internet speed?
When using Miracast (mirroring), the internet is not used; traffic flows within the local network. When using Chromecast or online video, the TV consumes traffic, loading the channel.