Modern TVs LG Smart TV have turned into powerful multimedia centers, but smartphone screens often contain content that is more convenient to display on a large diagonal. Technology Screen Share, built into LG firmware, allows you to broadcast images from a mobile device without the use of additional cables or set-top boxes. This is especially true for viewing family photos, videos from the gallery, or even showing presentations in an office environment.
The pairing process is based on standards Miracast and protocol Wi-Fi Direct, which means there is no need for a router to create a direct communication channel between gadgets. However, users often encounter difficulties during the initial setup, not understanding why the phone does not see the TV or why the connection keeps dropping out. In this article we will look at all the nuances, from basic connection to resolving specific conflicts between Android versions.
To get started, you do not need complex technical knowledge, but it is important to understand that the stability of the video stream transmission directly depends on the quality of the radio modules in both devices. It is critical that both devices are on the same Wi-Fi subnet if you are using a router, or have an activated wireless module for direct connection. Let's look at a step-by-step algorithm of actions that is guaranteed to lead to a successful broadcast launch.
Preparing equipment and checking compatibility
Before you begin active actions, you need to make sure that your TV LG supports the wireless image transmission function. Almost all models released after 2013 and running on NetCast or webOSplatforms have a built-in Screen Share module. On smartphones running Android, this function is also built into the system, but may be called differently depending on the manufacturer's shell.
Make sure that the TV software is updated to the latest version. Older firmware versions may not work correctly with new encryption standards used by recent versions of Android. Go to the TV settings menu, select the “General” section and check for updates. If you ignore this step, you may encounter handshake protocol errors when trying to connect.
⚠️ Attention: The webOS menu interface has changed in different versions (3.0, 4.0, 5.0, 6.0). If you do not find the Screen Share item in the specified location, use the settings search or refer to the manual of your specific model, since the location of the elements may differ.
It is also worth checking the status of the Wi-Fi module. For Wi-Fi Direct technology, which is often used for direct connections, to work, the adapter must be turned on, even if you are not connected to your home network. Some models Wi-Fi Direct, which is often used for direct connections, must be turned on even if you are not connected to your home network. Some models LG require forced activation of the function in the network menu before the TV becomes visible to external devices.
Step-by-step guide for connecting via built-in application
The most reliable way to establish communication is to use the standard application pre-installed on TVs LG. It's called "Screen Share" and is usually located in the top menu bar or located in the "Advanced" folder. Launch it on your TV and a message will appear on the screen indicating that the device is ready to connect and is waiting for your request.
Now let's move on to the smartphone. Depending on the brand of your Android device, the search algorithm may differ. On pure Android (Pixel, Motorola, Nokia), you need to lower the notification shade and find the “Broadcast” or “Cast” switch. On devices Samsung this function is called “Smart View”, and on Xiaomi it is called “Broadcast” or “Wireless Display”.
☑️ Checklist before connecting
After activating the search function on the phone, it should appear in the list of available devices your LG Smart TV. Click on it. A request to confirm the connection with a code or simply an “Accept” button may pop up on the TV screen. Use your remote to confirm. After this, the smartphone screen will be completely copied to the TV.
If the connection is successful, you will see the phone's desktop on the big screen. Please note that in this mode the phone may become slightly warm as the process of encoding the video stream requires processor resources. To stop the broadcast, simply disable the function on your phone or click the “Disable” button in the floating menu.
Using the LG TV Plus application for advanced control
For those for whom standard functions are not enough, the company LG has developed an official application LG TV Plus. It is available on the Google Play Market and allows you not only to broadcast the screen, but also to use your smartphone as a control panel, as well as transfer photos and videos from the gallery in high quality without the delays typical of mirroring.
After installing the application, launch it and follow the on-screen instructions. The app will automatically scan the network and find your TV. Unlike system streaming, here you can select specific content to show while continuing to use your phone for other tasks. This is especially convenient when you need to show photos from social networks or documents.
| Function | Screen Share (System) | LG TV Plus (Application) |
|---|---|---|
| Transfer type | Full mirroring screen | Selective media transfer |
| Control from the phone | Only touch interface of the phone | Full remote control |
| Work in the background | The phone screen is active | You can minimize the application |
| Picture quality | Depends on the system load | Optimized for photo/video |
An important advantage of the application is the ability to enter text from the smartphone keyboard, which eliminates the need to type search queries using the remote control. This makes LG TV Plus an indispensable tool for comfortable use of smart TV functions.
Secret Developer Menu
In some versions of the LG TV Plus application, you can activate additional codecs by holding down the “Menu” button on the main application screen 5 times. This may improve compatibility with older TV models. Alternative methods: Google Home and Chromecast
Alternative Methods: Google Home and Chromecast
If your TV supports the built-in platform Chromecast), the connection process becomes even easier. You don't need to look for special Screen Share settings; just use the standard Google Home application, which is found on most Android smartphones. LG supports embedded platform Google Cast (often found on new models with webOS 2022 and newer, or via built-in Chromecast), the connection process becomes even easier. You don't need to look for special Screen Share settings; just use the standard Google Home application, which is found on most Android smartphones.
Open the Google Home app, find your TV in the list of devices and click the "Cast Screen" button. This method often provides lower latency and better connection stability as it uses Google's optimized protocols. In addition, it allows you to cast Chrome browser tabs directly to your TV.
For users whose TVs do not have built-in Chromecast, but support installation of applications, it is possible to install the official APK file Google Cast Receiverif the TV model allows the installation of third-party software via USB. However, this requires more advanced knowledge and may violate the warranty, so it is recommended to use only standard tools.
⚠️ Attention: When using Google Home, make sure that your TV allows access for new devices. Sometimes the TV can ignore requests from unauthorized gadgets for security purposes.
Solving common problems and connection errors
Despite the simplicity of the technology, users often encounter a situation where the TV LG is simply not visible in the list of available devices. First of all, check whether your antivirus or firewall on your phone is blocking local network communication. Also try rebooting the router, as sometimes the DHCP server incorrectly distributes IP addresses to new devices.
Another common problem is desynchronization of audio and video or constant freezing of the picture. This indicates that the Wi-Fi channel is overloaded. Try switching your router to 5 GHz frequency if both devices support this standard. The 2.4 GHz frequency is often clogged with signals from neighbors and microwave ovens, which creates interference with video streaming.
If there is a picture but no sound, check the audio output settings in the application you are streaming. Some video players by default output audio only through the phone's speaker. Also make sure that the TV is not set to “Silent” mode or connected to Bluetooth headphones, which could intercept the audio stream.
Try to temporarily disable mobile data (3G/4G/5G) on your smartphone during the broadcast. Sometimes Android tries to use the mobile network to download data, creating a conflict with the Wi-Fi connection.
In cases where nothing helps, reset the network settings on the TV. This will not remove your applications, but it will update your network configurations. Go to Settings → Network → Wi-Fi Connection → Advanced Settings → Edit and select “Delete” for the current network, and then connect again.
Optimizing image quality and performance
To achieve the best picture quality when using Screen Share it is important to consider the screen resolution. If your phone has a high resolution (such as 2K or 4K) and your TV only supports Full HD, upscaling may occur, which sometimes results in artifacts. In your phone settings, you can try lowering the output resolution or frame rate if you experience lag.
Close all background applications on your smartphone before starting the broadcast. The process of encoding a video stream in real time is very demanding on processor resources and RAM. Background downloading of updates or operation of the navigator may cause image jerks.
The stability of the Screen Share connection is 90% dependent on the quality of the Wi-Fi signal and the absence of physical obstacles between the router and devices.
It is also worth considering that some content-protected applications (DRM protection) can block the screen broadcast. For example, Netflix or online movie theaters may show a black screen instead of video when attempting to mirror the entire screen. In such cases, use the built-in “Cast” button inside the application itself, and not the Screen Share system function.
Why does the LG TV not see the phone when Screen Share is turned on?
Most often, the problem lies in the fact that the devices are in different frequency ranges (one at 2.4 GHz, the other at 5 GHz) and the router is not configured for the correct routing between them. Also check if the “Guest Network” mode is enabled on the router, which isolates devices from each other.
Is it possible to broadcast a screen with a latency of less than 1 second?
Achieving a latency of less than 1 second over Wi-Fi is almost impossible due to the nature of data transfer protocols. For games that require instant response, use a wired connection or gaming consoles. Wireless technology will always have a slight lag (100-300 ms).
Does Screen Share affect Internet speed?
Yes, when using Wi-Fi Direct, the channel is completely blocked. When connected through a router, the broadcast video stream can take up a significant portion of the bandwidth, especially at high resolutions, which can slow down other devices on the network.