Modern multimedia systems make it easy to scale images from a laptop or desktop PC screen onto a large TV display. Wireless connection via WiFi eliminates the need to run long HDMI cables across the room, preserving the aesthetics of the interior. The technology Miracast, built into most LG Smart TVs, provides high-quality video transmission with minimal latency.
The process of synchronizing devices may vary depending on your computer's operating system and your TV's firmware version. Windows 10 and 11 have built-in projection tools that don't require third-party software. However, for stable operation, it's critical that both devices are on the same local network and support the standard. DLNA or Wi-Fi Direct.
In this article, we'll detail all available connection methods, troubleshoot potential errors, and explore the nuances of working with different platforms. You'll learn how to activate the "Screen Share" feature on your TV. LG WebOS and properly configure the display settings on your system. This guide will help you turn your TV into a fully functional monitor for presentations, gaming, or watching movies.
Technical requirements and equipment preparation
Before you begin setting up, you need to make sure that your equipment meets the minimum requirements for transmitting a video stream. Connection stability directly depends on the router's power and its support for modern wireless communication standards. The ideal option is to use a router operating in the range 5 GHz, as it provides higher throughput compared to the 2.4 GHz frequency.
LG TVs must support the platform Smart TV (WebOS or older versions of NetCast). The wireless screen projection feature is often called differently depending on the model year: Screen Share, Miracast or simply "Wireless Connection." Make sure your TV's software is updated to the latest version, available in the settings menu.
⚠️ Note: If your router uses AP Isolation, your computer and TV won't be able to see each other. This setting is often enabled on guest networks.
For computers running Windows, the minimum required operating system version is Windows 8.1, however, full support for the "Projection" function is available starting with Windows 10. The PC's graphics card must support the technology HDCP 2.2 for playing protected content in high definition, although for normal use this is not always a strict requirement.
Setting up an LG TV to receive a signal
The first step is to activate the signal reception mode on the TV. On most LG models with the operating system WebOS This feature is built into the basic menu and doesn't require downloading any additional apps. You need to take the remote control and press the button responsible for selecting the signal source, which is usually marked as Input or has a square icon with an arrow.
In the list of sources that opens, select the option Screen Share (On some models, it may be called "Mobile Device Connection" or "Smartphone Display"). Once selected, the system will enter connection standby mode, and a message will appear on the screen indicating that the TV is ready for pairing, along with the device name.
- 📺 Click the button
Settings(gear) on the remote control for quick access to the menu. - 📡 Go to the section
All Settings → Connection → Connect to a mobile device. - 🔍 Make sure the function Miracast or "Screen Receiver" is enabled.
- ✅ When prompted to connect from a new device, confirm the action by clicking "Accept."
It is important to note that in newer LG TV models, the function may be hidden in the app. Device Connector or require prior approval via a pop-up window. If the TV isn't visible in the list of available devices on your computer, try resetting the WiFi module in the TV's network settings.
Connecting a computer with Windows 10 and 11
Operating systems of the Windows family have native support for the protocol Miracast, which allows you to connect to compatible TVs without installing drivers. To begin the process, make sure your computer's WiFi adapter is active. Press the key combination Win + K on your keyboard to open the Connect sidebar.
The system will begin searching for available wireless displays within range. Once your LG TV's name appears in the list, click it. The connection process will begin, which can take anywhere from a few seconds to a minute. During this time, a connection confirmation prompt may appear on the TV screen, which you'll need to confirm with your remote.
⚠️ Note: If you are using a laptop with two graphics cards (integrated and discrete), make sure the drivers are updated for both, as the projection function is often tied to the processor's integrated graphics.
Once the connection is successful, you can select the screen mode. To do this, click Win + P and select one of the options: "Duplicate" (image on both screens), "Extend" (TV becomes a second monitor) or "Second screen only". Mode Expand It's especially useful for presentations, allowing you to see notes on your laptop while your audience watches your slides on TV.
☑️ Pre-connection check for Windows
In some cases, you may need to manually configure your wireless display settings. Go to Settings → System → Project to this PCHere you can configure the computer's visibility to other devices and the requirement for a PIN code to connect, which increases safety your local network from unauthorized access.
Using macOS and AirPlay 2 technology
Apple computer owners can take advantage of the technology AirPlay 2, which is supported by LG TVs released in 2019 and later. This provides a more stable image and audio transmission compared to the universal Miracast protocol. To get started, make sure both devices are connected to the same WiFi network and AirPlay support is enabled on the TV.
On your LG TV, go to the external device support menu and find the item AirPlayActivate it and, if necessary, set up a passcode (you can set an automatic passcode or require it each time you connect). On a Mac, open Control Center from the menu bar and select Screen Mirroring.
Select your LG TV from the list of available devices. If this is your first connection, a four-digit code will appear on the TV screen. Enter it on your computer. Once paired, the image from your Mac desktop will be mirrored to the big screen, maintaining its aspect ratio and color rendition.
| Parameter | Miracast (Windows) | AirPlay 2 (macOS) | DLNA (Media) |
|---|---|---|---|
| Transmission type | Streaming video (screen) | Streaming video (screen) | Files (photos/videos) |
| Delay | Average | Low | Absent |
| Sound | It is transmitted | It is transmitted | It is transmitted |
| Interface | Full screen clone | Full screen clone | Media content only |
Alternative methods via the LG TV Plus app
If standard methods don't work or require advanced control functionality, you can use the official app LG TV Plus (formerly known as LG Remote). It's available for Windows and mobile platforms. This method often allows you to not only mirror your screen but also control your TV, transfer files, and launch apps directly from your computer.
To install, visit the official LG website or the Microsoft Store and download the latest version of the app. After installation, launch the program and follow the on-screen instructions to search for the TV on the network. The app may request permission to access the local network, which must be granted in Windows Firewall.
- 📲 Download the app LG TV Plus from an official source.
- 🔗 Run a network scan to find your TV.
- 🔑 Enter the PIN code displayed on the TV screen to pair.
- 🖥️ Use the "Screen Share" feature within the app interface.
This method is especially useful if built-in Windows tools are unstable. The application uses its own video compression algorithms, which in some cases can reduce the load on the WiFi channel. However, keep in mind that image quality may be slightly lower than with a direct connection via the OS system tools.
What should I do if the app doesn't detect the TV?
Make sure your firewall isn't blocking the LG TV Plus app. Try temporarily disabling your antivirus. Also, check that your router settings aren't set to restrict data exchange between devices (Client Isolation).
Diagnosing problems and troubleshooting delays
The most common problem with a wireless connection is audio and video desynchronization or image stuttering. This usually indicates insufficient channel bandwidth or signal interference. To diagnose the problem, try moving your computer closer to the router or eliminating other active network downloads.
If the image is frequently interrupted, check the screen resolution. Signal transmission in 4K requires significantly more WiFi resources than Full HD. Try lowering the output resolution on your TV to 1920×1080 through Windows display settings (Settings → System → Display). Switching the router to a channel with less traffic may also help.
⚠️ Note: Smart TV interfaces and menu names may vary slightly depending on the webOS firmware version. If you don't see this option, please refer to the user manual for your specific model or update your TV's software.
If there's no image at all, check the date and time on both devices. System time desynchronization can cause security certificate errors during handshake. Setting the correct time via the internet (NTP) often resolves the connection issue.
Why isn't my LG TV showing up in the list of wireless displays?
The most common problem is that the devices are on different subnets (for example, one is connected to a guest WiFi network and the other to the main WiFi network). It's also possible that UPnP or Multicast is disabled on the router. Try rebooting the router and both devices.
Is it possible to transmit sound only to the TV?
Yes, after connecting in Windows, you need to click the speaker icon in the system tray, select the audio output device, and select your LG TV (often displayed as Intel® WiDi or the TV model name). In macOS, you can select the audio output device in the Sound menu or through Control Center.
Does connecting a screen affect internet speed?
Yes, streaming video over WiFi takes up a significant amount of bandwidth. If you use the 2.4 GHz band, internet speeds on other devices may drop significantly. To minimize the impact, use the 5 GHz band.
Do older LG TVs support wireless connectivity?
Models released before 2014-2015 (NetCast platform) may not have built-in Miracast support. In this case, you'll need to purchase an external adapter (such as a Chromecast, Miracast dongle, or Apple TV) that plugs into your TV's HDMI port.