Modern Smart TV TV viewing has transformed ordinary television viewing into a multimedia experience where gadgets play a key role. The ability to instantly stream content from a smartphone to a big screen is one of the most sought-after features by users. This eliminates the need to copy files to a flash drive or search for large files online directly on the TV.
Equipment owners LG People often wonder how to set up this process as quickly and wirelessly as possible. Technology Wi-Fi Allows you to stream high-quality video while minimizing latency. In this article, we'll cover all current connection methods, from built-in system features to third-party apps, and solve common synchronization issues.
The main advantage of wireless streaming is convenience. You don't need to buy additional adapter cables, which are often lost or simply don't fit your phone's port. Simply connect both devices to the same local network, and your smartphone's media library will be available on the big screen.
Preparatory stage: setting up the network and devices
Before you begin broadcasting, you need to ensure the connection foundation is properly established. The most common mistake is connecting your phone to mobile internet (4G/5G) while your TV is connected to your home router. For the technology to work properly, DLNA or the Miracast protocol, both devices must be in the same digital space.
Check your router settings. In some cases, especially in densely populated apartment buildings, the "Client Isolation" feature may be enabled. This feature is designed for security on public networks, but it prevents devices within the same network from "seeing" each other. If this feature is enabled, your phone will be physically unable to find your TV. LG, even if the Wi-Fi password is entered correctly.
⚠️ Attention: Make sure Wi-Fi is enabled on both devices. Using Wi-Fi Direct may eliminate the need for a router, but data transfer speeds will be lower and your phone's internet connection may be temporarily lost.
It's also worth paying attention to the software version. Manufacturers are constantly updating security protocols and codecs. Go to the TV menu, select Settings → All settings → Support → Software update and check for new versions. It's recommended to do the same on your smartphone, especially if you're using Android, as system updates often include patches for multimedia features.
Using the built-in Screen Share (Miracast) feature
The fastest way to display an image is to use native technology. Miracast, which is on TV LG Often called Screen Share, this method allows you to mirror your smartphone's entire screen, making it ideal for viewing photos, videos from your gallery, or even playing games. Unlike DLNA, it transmits a real-time video stream, not just a file link.
To get started, press the house or up arrow button on the remote control to bring up the launcher. Find the app Screen Share (Screen Casting) and launch it. The TV will go into connection standby mode. On Android smartphones, this feature may be called "Cast," "Smart View," "Wireless Monitor," or "Projection." This switch is usually found in the notification shade.
The search process may take 5 to 15 seconds. If the devices fail to find each other, try restarting your phone's Wi-Fi module. It's important to understand that using Miracast will drain your smartphone's battery significantly faster due to the active video stream and screen activity.
☑️ Pre-broadcast check
Image quality directly depends on signal strength. If the router is located far away or the signal passes through several solid walls, compression artifacts or image flickering may be observed. In such situations, it's best to move closer to the signal source or use the 5 GHz band if your router and TV are connected. LG support this standard.
Streaming video via the LG TV Plus app
Official app LG TV Plus (or its newer version, LG ThinQ) offers advanced control options. It allows you to not only mirror your screen, but also use your smartphone as an advanced keyboard and stream media files from your phone's internal memory to your TV via the DLNA interface.
After installing the app on your smartphone and initial pairing (entering the PIN code that appears on the TV screen), you can access the file system. Select the "Media" or "Gallery" section and find the desired movie. Tapping the file will start playback on the TV, and your phone will act as a remote control. This is convenient because you can minimize the app or even lock your phone without interrupting your viewing experience.
⚠️ Attention: The video file format must be supported by your TV. If you try to play a rare codec (such as some variations of HEVC or older AVI formats), the app may return an error or play the video without sound.
The advantage of this method is stability. Since the phone doesn't encode the video stream on the fly (as with screen mirroring), but only sends a playback command, the load on the smartphone's processor is minimal. This also saves battery life. However, this method isn't suitable for streaming services like YouTube or Netflix—for those, you need to use the app's built-in cast icon.
What should I do if the app doesn't detect the TV?
If LG TV Plus doesn't detect your TV, check your router's firewall. Sometimes antivirus software on your computer or router blocks ports required for discovery protocols. Try temporarily disabling the firewall or adding devices to the trusted list.
Streaming from iPhone: AirPlay 2 technology
For equipment owners Apple I was luckier because modern TVs LG (2019 and newer models) have built-in protocol support AirPlay 2This means you don't need any third-party apps or complicated settings. The system runs at the iOS kernel level, ensuring the highest image quality and minimal latency.
To start casting, open Control Center on your iPhone (swipe down from the top-right corner or up from the bottom, depending on your model). Tap the Mirroring icon (two rectangles). Select your TV from the list of available devices. LGA connection confirmation request may appear on the TV screen. Enter the code displayed on your smartphone screen.
AirPlay 2 not only allows you to mirror your screen but also stream audio separately, creating a multi-room audio system. If you have multiple LG TVs or HomePod speakers, you can sync them. This protocol also supports 4K HDR video streaming, provided the content and TV support it.
| Parameter | Miracast (Android) | AirPlay 2 (iOS) | DLNA (LG TV Plus) |
|---|---|---|---|
| Transmission type | Screen mirroring | Dubbing + Media | Media files only |
| Quality | Depends on the signal | High (up to 4K) | Original file |
| Work in the background | No (screen active) | Yes (for media) | Yes |
| Battery charge | High consumption | Average consumption | Low consumption |
Third-party apps and browser streaming
Sometimes built-in tools aren't enough, especially if you want to stream content from apps that block image output (DRM protection) or don't have a "Stream" button. In these cases, universal tools like Web Video Caster or Cast to TV.
These apps work on the principle of "redirection." You copy the video link to the clipboard, open it in the app's browser, and it automatically sends the stream to the TV, bypassing the smartphone screen. This allows you to watch the video with your eyes closed or use your phone for other tasks while watching.
Many browsers, such as Google Chrome on Android or Safari on iOS, also have a built-in Cast feature. Open an online movie theater page in your browser, find the "Cast" option in the menu, and select your LG TVThis often helps to bypass the limitations of mobile versions of websites.
It's worth noting that third-party apps may contain ads that cannot be skipped without a subscription. They also require local network access, so be sure to read the permissions carefully when installing. Free versions often have session time or image quality limitations.
Troubleshooting: What to do if there is no picture or sound
Even with a perfect setup, glitches can still occur. The most common issue is audio and video desync. If the actors' lips aren't moving in time with their voices, try lowering the stream quality in the streaming app settings or rebooting the router. Accumulated cache in the TV's network module can also cause delays.
If the TV doesn't detect your phone at all, check if you're using a guest Wi-Fi network. Guest networks are often isolated from the main network where the TV is located. Also, make sure your router isn't set to split the 2.4 GHz and 5 GHz bands into different network names (SSIDs). Ideally, both devices should be connected to the same access point with the same name.
⚠️ Attention: The webOS (on LG TVs) and Android/iOS operating system interfaces are updated regularly. Menu locations, item names, and connection methods may differ from those described depending on the firmware version of your specific model.
If wireless methods fail completely, you can use a wired connection via an HDMI adapter (Lightning to HDMI for iPhone or USB-C to HDMI for Android). This will guarantee a signal, but will deprive you of the convenience of wireless control. However, for viewing heavy 4K content with a high bitrate, a cable remains the most reliable option, as Wi-Fi may not be able to handle the bandwidth.
Questions and Answers (FAQ)
Is it possible to display a phone screen on an LG TV without a Wi-Fi router?
Yes, this is possible using Wi-Fi Direct technology. In this mode, the TV automatically creates a network to which the phone connects. However, the phone's internet connection will not work at this point, as the Wi-Fi module is busy connecting to the TV. This method also doesn't work with AirPlay.
Why is there no sound when streaming a movie from my phone to TV?
Often, the sound remains on the phone rather than switching to the TV. Check the audio output settings in the app you're streaming from. Also, make sure the TV isn't set to "Headphones Only" or mute. Restarting the LG TV Plus app usually resolves the issue.
Does my old LG TV support AirPlay?
Native AirPlay 2 support is available in LG models running WebOS 4.5 and higher (typically TVs from 2019 and newer). Older models (2018 and earlier) lack this feature, but can use third-party receiver apps installed on the TV itself from the LG Content Store.
How can I improve image quality if the video is constantly lagging?
Try switching your router to the 5 GHz channel; it's less congested and provides better speed. Also, close all background apps on your phone. If this doesn't help, your internet bandwidth may be too low for streaming 4K video; try lowering the quality in your video service settings.