Modern TV models LG While TVs are powerful multimedia centers, it's sometimes more convenient to control content from a large screen using a mobile device. Users often need to quickly launch a YouTube video they found on their smartphone but don't want to bother with typing text using a remote control. Wireless data transmission technologies make it possible to stream images almost instantly using just a home Wi-Fi network.
There are several proven ways to accomplish this task, from the built-in Chromecast function to native manufacturer solutions like LG ThinQ or Screen ShareThe specific method you choose depends on your device's operating system (Android or iOS) and the year of your TV's production. In this article, we'll cover all the options in detail so you can enjoy video on the big screen without unnecessary wires and delays.
Network requirements and basic preparation
The first and most critical condition for successful synchronization is that all devices are on the same local network. This means that both your smartphone and Smart TV must be connected to the same router. If you have a dual-band router, make sure both devices operate on the same frequency (either 2.4 GHz or 5 GHz), although modern routers often combine them into a single network with the same name.
Check the signal stability as high definition video streaming (4K or Full HD) requires a constant data transfer rate. If the signal is weak, the broadcast may be interrupted or the picture quality may be reduced. To diagnose this, you can play any video on the TV itself using the built-in YouTube app.
⚠️ Note: If your router uses AP Isolation, devices will not be able to see each other. This option must be disabled in the router settings.
Make sure Smart TV is enabled on your TV and network access is enabled. Older models may require manual confirmation of the connection request upon first launch.
Using the built-in Cast feature in the YouTube app
The most universal and simple method that works equally well on both Android, and on iOS — is the use of the native broadcast button within the YouTube app itself. This method is based on technology Google Cast, which is built into most modern LG TVs running the webOS platform.
To get started, open the YouTube app on your smartphone. In the upper right corner of the interface, you'll see a rectangle icon with waves in the corner—this is the streaming button. When you tap it, the app will begin searching for available devices on your Wi-Fi network.
In the list that appears, select your TV. LGIf the device is found, a confirmation window will appear on the TV screen, which you must accept with the remote. After this, the app interface on your phone will change, allowing you to control playback, pause, or change the video without interrupting the big screen.
This method is convenient because the phone acts only as a remote control, and you can minimize the application or use other smartphone functions while the video continues to play on the TV.
Screencasting via Screen Share (Miracast) on Android
If the built-in feature in the app doesn't work for some reason, or you need to stream content that doesn't support direct casting (for example, videos from a third-party browser or gallery), you should use the screen mirroring feature. On LG TVs, this feature is called Screen Share or Miracast.
On your LG TV, find and launch the app Screen Share in the list of programs. It may be in the "Applications" folder or under "Additional." After launching, the screen will display "Waiting for connection" and possibly a PIN code.
On an Android smartphone, the path to the function may vary depending on the manufacturer's operating system. Typically, it looks like this:
- 📱 Samsung: Notification shade → Smart View
- 📱 Xiaomi/Redmi: Settings → Connection and sharing → Broadcast
- 📱 Huawei/Honor: Notification shade → Projection
- 📱 Other: Search by settings "Cast," "Smart View," or "Wireless Monitor"
Select your TV from the list. The image from your phone will be copied completely to the TV screen. Please note that in this mode, the phone screen should not be dimmed, and the image proportions may differ.
☑️ Pre-broadcast check
Connecting an iPhone via AirPlay 2
Apple technology owners can use the technology AirPlay 2, which is supported by most modern LG TVs (2019 models and newer, as well as some older models after a firmware update). This ensures the best transmission quality and minimal latency.
Make sure your iPhone is running the latest version of iOS. Open Control Center (swipe down from the top-right corner or up from the bottom, depending on your model) and tap the "Screen Mirroring" button (the two rectangles).
Select your LG TV from the list. If this is your first time pairing, a 4-digit code may appear on the TV screen. Enter this code on your iPhone. Once paired, your smartphone's screen will be mirrored to the TV.
⚠️ Note: For AirPlay 2 to work, your TV must support this feature. Check your model's specifications on the official website if the button doesn't appear.
You can also cast videos directly from the YouTube app on iPhone by tapping the cast icon, similar to the Android method. The system will automatically suggest using AirPlay if direct casting via Google Cast is unavailable for some reason.
What to do if AirPlay isn't working?
Make sure AirPlay support is enabled in your LG TV's settings under General -> AirPlay. Also, try rebooting your router, as the AirPlay protocol is sensitive to network multicast settings.
Using the LG ThinQ app to control
LG has developed its own app LG ThinQ, which turns your smartphone into a universal remote control and allows you to stream media files. This is an official solution that guarantees compatibility with all Smart TV functions.
Download the app from Google Play or the App Store and sign in to your LG account. Run a device scan—the app will find your TV on your Wi-Fi network. After pairing (confirming the code on the TV), you'll gain full control.
In the app interface, select the option to transfer photos and videos. You can select a file from your phone's gallery and send it to your TV. This method is less convenient for YouTube than direct casting, but it's a great alternative for viewing personal archives.
Advantage LG ThinQ The feature allows you to control the mouse cursor on your TV screen using your phone's touchscreen, making it easier to navigate websites or complex menus.
Comparison of connection methods and their features
To help you choose the right method, we've systematized the main characteristics of each method. The differences concern not only image quality but also ease of use.
| Method | Video quality | Control | Phone addiction |
|---|---|---|---|
| YouTube Cast | Maximum (up to 4K) | Full via app | No (TV plays itself) |
| Screen Share | Depends on Wi-Fi signal | By phone | Yes (screen active) |
| AirPlay 2 | High (optimized) | Via phone/remote control | Partially |
| LG ThinQ | Good | Via the app | Yes |
As you can see from the table, the native function is best for watching YouTube. Cast, as it's the least demanding on smartphone resources. Screen mirroring methods (Miracast/AirPlay) are best used when the desired app isn't available on the TV.
Solving common connection problems
Even with proper setup, technical difficulties may arise. Often, the problem lies in the app cache or temporary network protocol glitches. If the TV doesn't detect the phone, try rebooting both devices by completely disconnecting them from power for 10-15 seconds.
Another common cause is different frequency ranges. If the router distributes two networks (for example, HomeWiFi And HomeWiFi_5G), make sure both devices are connected to the same subnet. Some routers don't allow devices from different subnets to see each other.
- 🔄 Update the YouTube app on your smartphone and TV to the latest version.
- 📶 Move closer to the router to avoid data packet loss.
- 🔒 Check if your router is set to restrict data exchange between clients (Client Isolation).
If nothing helps, you can try resetting the network settings on your TV through the menu. Settings → Network → Wi-Fi Connection → Advanced Settings → Edit and re-enter the password.
⚠️ Note: The menu interface on LG TVs may differ depending on the webOS version. If you don't see this option, please consult the official instructions for your model, as the location of network settings may vary.
Frequently Asked Questions (FAQ)
Why isn't my LG TV showing up in the list of available devices?
Most likely, the devices are on different Wi-Fi networks or client isolation is enabled on the router. Also, check if your phone's antivirus software is blocking detection of local devices.
Is it possible to connect a phone to a TV without Wi-Fi?
Wireless connection is impossible without a Wi-Fi router or access point. However, you can use a cable adapter (USB-C to HDMI or Lightning to HDMI) if your phone supports video output.
The video is lagging when streaming from my phone. What should I do?
This indicates low Wi-Fi speed or channel congestion. Try lowering the video quality in YouTube settings on your phone or restarting your router. Also, close background apps on your smartphone.
Do older LG TVs support AirPlay?
Native AirPlay 2 support is available in 2019 and newer models. Older models (2018 and earlier) don't officially support this feature, requiring the use of third-party media server apps.