Modern LG TVs running on the webOSplatform offer users many ways to interact with their smartphone. This function Screen Share is one of the most popular, allowing you to broadcast the image from the screen of a mobile device to a large panel without the use of wires. This is especially convenient for viewing photos, videos, or showing presentations in high definition.
The setup process may vary depending on the version of your TV's operating system and the model of your Android smartphone. Some devices use a standard protocol Miracastwhile others rely on the manufacturer's proprietary solutions. Understanding these differences will help you avoid common mistakes when you first start.
In this article we will examine in detail all available synchronization methods, including the use of built-in system tools and third-party applications. You will learn how to ensure a stable connection and what network parameters are critical for high-quality image transmission without delays.
Preparing equipment and network
Before starting the procedure, make sure that both devices - the TV and smartphone - are connected to the same one Wi-Fi networks. This is a fundamental requirement for wireless data technology to operate. If the router supports two frequency bands, it is advisable to use 5 GHz to reduce the likelihood of interruption of the video stream.
Check that the software on yours is up to date. LG Smart TV. Outdated firmware versions may not support new encryption standards or codecs, resulting in the device being unable to be detected in the list of available ones. Updates often eliminate hidden bugs in network modules.
⚠️ Attention: If your router is configured to separate networks (the guest network is isolated from the main one), the devices will not see each other. Make sure that data saving mode or airplane mode is disabled on both gadgets.
It is also worth checking whether the quick connection function is activated on the TV itself. Some LG models require you to manually allow external devices to access the screen through the privacy settings menu. Without this step, the phone can see the network, but will not be able to initiate a connection.
Using the built-in Screen Share function
The most direct method of broadcasting is using the native application Screen Sharepre-installed on LG TVs. To launch, find the corresponding icon in the main menu or in the list of applications. After opening, you will see a connection waiting window with the name of your TV.
On the Android smartphone side, the procedure is also simple. Open the quick settings panel (swipe from top to bottom) and find the Broadcast, Smart View or Wireless projectorbutton. The name may differ depending on the phone manufacturer (Samsung, Xiaomi, Huawei).
After scanning the network, your LG TV will appear in the list of available devices. Click on it and after a few seconds the image is mirrored. The quality of the picture will depend on the power Wi-Fi module and distance to the router.
☑️ Check before connecting
It is important to note that when using this method, the phone screen is completely duplicated on the TV. This means that all notifications, incoming calls and messages will be visible to everyone in the room. Configure privacy settings in advance if you plan to display content publicly.
Cast via the LG TV Plus app
Official app LG TV Plus (formerly known as LG Remote) provides advanced functionality compared to the standard broadcast screen. It is available for download on the Google Play Store and allows you not only to duplicate the screen, but also to manage media files more flexibly.
After installing the application and pairing with the TV via Menu → Connected devices, go to the Screen Share section inside the app interface. Here you can select specific photos or videos from the gallery without displaying the entire smartphone desktop.
A feature of this method is the ability to use the phone as a control panel. You can pause playback, adjust the volume or change tracks without interrupting the content on the big screen.
⚠️ Attention: The LG TV Plus application interface may differ on different versions of the Android operating system. If you do not see the required button, check the application permissions in the phone settings - access to the local network must be allowed.
Using official software often provides a more stable connection, since the data exchange protocols are optimized by the manufacturer itself. However, for all functions to work, you may need to create an LG account and log in on both devices.
Alternative methods: Google Home and Chromecast
Many modern LG models are equipped with built-in support for the technology Google Cast. This allows you to stream content directly from compatible apps (YouTube, Netflix, Spotify) without having to duplicate the entire screen. In this case, the phone only acts as a remote control.
To use this method, make sure that the application Google Home (or the built-in Chromecast service) is installed and updated on your TV. In the app on your phone, press the cast button (the rectangle icon with waves) and select your TV from the list.
The advantage of this approach is that the phone does not heat up or drain as quickly as with full mirroring. In addition, the quality of the video stream is often higher, since the data is transferred directly from the server to the TV, bypassing the smartphone's processor.
What to do if Chromecast does not work?
If the built-in function does not activate, try reinstalling updates for Google Play services. Also check if your antivirus or firewall is blocking your local network connection. Sometimes resetting the network settings on the TV helps.
It is worth considering that not all applications support direct output via Cast. In such cases, you will still have to resort to full screen duplication through Android system tools or third-party software.
Comparison of connection methods
The choice of the optimal connection method depends on your specific tasks: whether you need to show the desktop, run a game, or just play a movie. Each method has its own technical limitations and advantages.
Below is a table that helps you quickly navigate the characteristics of various image transmission protocols on LG TVs.
| Method | Latency | Quality | Battery consumption |
|---|---|---|---|
| Screen Share (Miracast) | Low | High (up to 1080p/4K) | High |
| LG TV Plus | Medium | Depends on the file | Medium |
| Google Cast | Minimum | Maximum (adaptive) | Low |
| Third-party applications | High | Medium (compression) | Very high |
As can be seen from the data, direct is best suited for games Miracast, as it provides minimal input lag. For watching movies in high definition, Google Cast is preferable, which adjusts the bitrate to the network speed.
Third-party applications should be used only in extreme cases when standard tools do not work. They often add advertising overlays and can reduce the overall image quality due to additional software processing.
Solution and quality adjustment
If the image jerks, has a low resolution, or the connection constantly drops, first check the Wi-Fi channel load. In apartment buildings, the airwaves can be very noisy, which is critical for video streaming.
Try changing the resolution settings in the phone menu. Sometimes the automatic detection of_capabilities_ of the TV does not work correctly, and manually setting the parameter 1280x720 or 1920x1080 stabilizes the picture. It's also a good idea to turn off Bluetooth on your phone when you're not using it to reduce signal interference.
To reduce latency when playing games, turn on your TV's Game Mode in the picture settings. This will disable unnecessary post-processors and speed up the response.
In some cases, static IP addressing helps. Go to the TV's network settings, select Settings → Network → Wi-Fi → Advanced settings and enter the IP address manually, eliminating conflicts with the router's DHCP server.
The stability of the connection is 90% dependent on the quality of the Wi-Fi signal and the absence of physical obstacles between the router and the TV.
FAQ: Frequently asked questions
Why does the phone not see the LG TV in the list of devices?
Make sure that both devices are on the same subnet. Check if the router has a ban on communication between clients (AP Isolation). Also try rebooting the router and both devices.
Can you connect your phone to a TV without Wi-Fi?
Yes, using a cable. For modern smartphones with a USB-C port, you will need an adapter USB-C to HDMI. In this case, Wi-Fi is not needed, the image is transmitted over the wire with minimal delay.
How to remove black bars along the edges of the screen during broadcasting?
This can be solved by adjusting the aspect ratio. On the LG remote control, press the button P:Ratio or Aspect Ratio and select the "Just Scan" or "16:9" mode so that the image fills the entire screen without cropping.
The video slows down during broadcasting, what should I do?
Close background applications on the phone, release RAM. If the problem persists, reduce the video quality in the source application or move closer to the router.
Do older LG models support Screen Share?
Most LG Smart TVs released after 2014 support Miracast. For very old models, you may need to connect an external adapter (for example, Chromecast or Miracast dongle) to the HDMI port.