Modern LG TVs with the platform webOS They've long since ceased to be simply devices for watching broadcast channels or streaming video. High-resolution 4K displays and HDR support make them excellent alternatives to traditional computer monitors, especially when it comes to watching movies, presenting presentations, or casual gaming. Using a wireless connection eliminates the need to run long HDMI cables across the room, preserving the aesthetics of the interior.
The pairing process is based on wireless media transfer standards such as Miracast (WiDi) and DLNA. Computer The TV and the computer must be on the same local network to ensure stable video streaming with minimal latency. While a wired connection has always been considered the standard for stability, modern Wi-Fi 5 and Wi-Fi 6 routers can achieve speeds sufficient to stream high-quality images without visible compression artifacts.
In this article, we'll take a detailed look at all available connection methods, from built-in Windows features to third-party options. You'll learn how to set up screen resolution, eliminate audio desynchronization, and achieve maximum picture smoothness. Properly configured network settings will allow you to comfortably use your large TV screen for working on documents or surfing the web.
Technical requirements and equipment preparation
Before you begin setup, you need to make sure your equipment meets the minimum requirements for wireless video streaming. The key element here isn't just the TV itself. LG Smart TV, but also a router that facilitates communication between devices. Streaming video in Full HD or 4K resolution requires a stable, high-bandwidth connection.
The ideal option is to use a router that supports dual-band operation (2.4 GHz and 5 GHz). The 5 GHz frequency is less congested with interference from neighboring networks and household appliances, which is critical for real-time video streaming. If your router is older and only supports 2.4 GHz, you may experience choppy video or reduced image quality when other devices are actively using the internet.
- πΊ LG Smart TV (webOS 3.0 or higher)
- π» A PC or laptop with a Wi-Fi adapter (preferably supporting 802.11ac or ax)
- πΆ Router with 5 GHz support to minimize latency
- π Stable power supply for all devices during setup
β οΈ Note: When using older routers or in apartment buildings with high levels of noise, the wireless 4K video connection may become unstable. In such cases, we recommend lowering the output resolution on your TV or moving the router closer to the receiver.
It is also important to check the operating system version on your computer. Windows 10 And Windows 11 Wireless display features are built-in by default and don't require additional driver installation if the Wi-Fi adapter supports Miracast technology. On macOS, the situation is different, as Apple uses its own AirPlay protocol, which is supported by LG TVs starting with certain models and years of production.
Setting up a connection using the Connect to a Wireless Display feature in Windows
The easiest and most native way to turn an LG TV into a second monitor is to use a built-in Windows feature. This method is based on Miracast technology, which allows you to transmit images and sound without losing the quality supported by your hardware. You don't need to search for or download third-party software; everything is already integrated into the system.
First, make sure both devices are connected to the same Wi-Fi network. Press the [Show] button on your TV remote control. Home (house) and find the "Screen Share" or "Connect to Mobile Device" app. In newer versions of webOS, this feature may be integrated directly into the input source selection menu. Input.
On your computer, press the key combination Win + KThe "Connection" panel will open on the right, where the system will begin searching for available displays. When yours appears in the list LG TV, click on it. A confirmation message may appear on the TV screenβselect "Accept" or "Allow."
βοΈ Quick Connection Checklist
Once paired successfully, you can select the projector's operating mode. Click Win + Pto open the project menu. Four modes are available: computer screen only, duplicate (copy), extended desktop, and second screen only. The "Extend" mode lets you drag program windows onto your TV, using it as a full-fledged second monitor.
β οΈ Note: Your LG TV's menu interface may vary slightly depending on your webOS firmware version. If you don't see the "Screen Share" option, check your app list or update your TV's software through the settings menu.
Using Intel WiDi technology and third-party applications
If the standard connection through Windows does not work correctly or your computer does not have a built-in Wi-Fi module with Miracast support, you can use alternative methods. Technology Intel WiDi (Wireless Display) was once very popular, but its functionality is now fully integrated into Windows standards. However, older systems or specific tasks may require third-party solutions.
One of the popular applications is LetsView or ApowerMirrorThese programs are installed on both your computer and your TV (via the LG Content Store). They often provide better connection stability and additional features, such as mouse control with a remote control or screen recording.
For users who prefer open source software, the project is perfect OpenBroadcast Or use the DLNA protocol to stream media files. While DLNA doesn't allow you to stream your desktop in real time (like Miracast), it's ideal for watching video files stored on your PC's hard drive on a big-screen TV.
| Method | Latency | Quality | Complexity |
|---|---|---|---|
| Miracast (Win + K) | Low | High (up to 4K) | Low |
| DLNA (Media) | No (buffering) | Original | Low |
| Third-party applications | Average | Depends on the network | Average |
| HDMI cable | Minimum | No losses | Low |
Why might Miracast not work?
Miracast may not work if Wi-Fi Direct is disabled on your computer or if your wireless adapter driver doesn't support this technology. Antivirus software can also block incoming screencast connections.
Connecting Apple Mac computers via AirPlay 2
Apple device owners are even luckier, as modern LG TVs support the protocol. AirPlay 2 Natively. This means you don't need to install any additional apps to display images from your MacBook or iMac. All you need is for the devices to be on the same Wi-Fi network.
To connect, click the "Screen Mirroring" icon in the macOS menu bar (the rectangle with a triangle at the bottom). Select your TV from the drop-down list. LG Smart TVThe system may request a confirmation code, which will appear on the TV screen. Enter it on your computer to complete the pairing.
AirPlay 2 provides excellent audio and video synchronization and allows you to use your TV as a separate display in Extended Mode. You can drag Safari, Finder, or any other app windows onto the larger screen. For AirPlay 2 to work, your router must support the appropriate multicast standards.
- π Open System Preferences β Displays
- π‘ Make sure Wi-Fi is turned on on both devices
- π₯ Select your TV from the list of available displays
- π Enter the security code if requested
Image optimization and lag elimination
After a successful connection, you may notice a noticeable delay in mouse cursor movement and blurry fonts. This is normal for wireless connections, but it can be minimized. First, adjust the picture mode on your TV.
Go to your LG TV's picture settings (All Settings β Image) and select "Game" or "PC" mode. This mode disables various image post-processing algorithms (antialiasing, noise reduction), which are the main contributors to input lag. The image will appear more "raw" but more responsive.
On the computer side, it's also worth checking the graphics settings. Right-click on the desktop and select "Display settings." Make sure the resolution is set to 1920Γ1080 or 3840Γ2160 (depending on the TV model), and the refresh rate matches the panel's capabilities (usually 60 Hz). If the picture is blurry, try lowering the refresh rate to 50 Hz or 30 Hz.
β οΈ Please note: Wireless image transmission always introduces some latency. For professional esports or competitive shooters, using Wi-Fi instead of an HDMI cable is not recommended, as even a small amount of latency can be critical.
Another important aspect is energy conservation. Make sure your computer and TV are set to sleep mode while you're working. Some router models may disconnect when idle if aggressive power saving is enabled for the Wi-Fi module. Check your wireless network adapter settings in Windows Device Manager by unchecking the box next to "Allow the computer to turn off this device to save power."
Troubleshooting and diagnostics
Even with proper setup, issues may still occur. If your computer doesn't see your TV, try restarting both devices. Often, the problem lies in the network service cache. Also, make sure that client isolation isn't enabled on your router, which prevents devices on the network from seeing each other.
If the sound comes through your computer speakers instead of your TV, you need to switch the playback device. In Windows, click the speaker icon in the system tray, select the arrow next to the volume slider, and select LG TV or Intel(R) Display Audio in the list of devices.
If your connection is constantly dropping, try changing the Wi-Fi channel in your router settings. A crowded 2.4 GHz band is a common cause of problems. Switching to a clear channel in the 5 GHz band will dramatically improve the situation. If all else fails, reset your TV's network settings using the menu. Settings β General β Factory Reset (with saving account data) may help.
Why is the image on the TV not full screen?
This is a scaling issue. On the LG remote, press the "Aspect Ratio" button (often looks like a magnifying glass or a rectangle with arrows) and select "Just Scan" or "Original" mode. On your computer, check the scaling settings in your graphics card driver (NVIDIA/AMD/Intel) and set it to "Full Screen Mode."
Is it possible to play PC games on TV via Wi-Fi?
Yes, it's possible, but with limitations. For quiet strategy games, card games, or RPGs, this is perfectly acceptable. However, for fast-paced shooters (CS:GO, Call of Duty), input lag over Wi-Fi can range from 50 to 150 ms, making gaming uncomfortable. In such cases, it's better to use an HDMI cable.
The TV is visible in the list, but the connection is reset?
Most likely, the Wi-Fi signal is weak or there's interference. Try moving the router closer or using a Wi-Fi extender. Also, check if your router has a limit on the number of connected devices or MAC address filtering.