Modern smartphones have become the center of digital entertainment, but the small screen is not always convenient for watching movies, photos or games. A combination of Android and a TV LG gives access to the big screen without losing the quality of the content. Users often encounter difficulties during the initial setup, not knowing which method to choose from the many available signal transmission options.
In this article we will analyze in detail all the current methods of synchronizing devices: from wireless technologies to wired connections. You'll learn how to use built-in features, third-party apps, and physical cables to achieve the perfect picture. Correct setup will turn your TV into a powerful multimedia center, controlled directly from the palm of your hand. webOS, third-party apps and physical cables to achieve the perfect picture. With the right setup, you can turn your TV into a powerful multimedia center, controlled right from the palm of your hand.
Preparing devices for synchronization
Before starting any manipulations, you need to make sure that both devices are ready for interaction. The basic requirement for most wireless methods is that the smartphone and TV are on the same local network. If your router supports bands 2.4 GHz and 5 GHz, it is recommended to connect both gadgets to the network 5 GHz to ensure maximum channel throughput.
On TV LG with an operating system webOS you need to check the availability of the device discovery function. Go to the settings menu and find the section responsible for connecting mobile gadgets. In different firmware versions, this item may be called differently, but the essence remains the same: the device must be visible to external signal sources.
⚠️ Attention: Some antiviruses or firewall settings on the router may block local device discovery (UPnP). If the TV does not see the phone, try temporarily disabling network protection or adding devices to the trusted list.
It is also worth updating the software on both devices to the latest versions. Manufacturers regularly release patches to correct errors in data transfer protocols. On the phone this is done through the system settings, and on the TV LG the path usually looks like this: Settings → All settings → Support → Software update. Current firmware guarantees compatibility with new video encoding standards.
☑️ Ready to connect
Wireless connection via Screen Share (Miracast)
The most popular way to broadcast the screen without unnecessary wires is to use technology Miracastwhich on TVs LG is implemented through the function Screen Share. This method allows you to duplicate an image from a smartphone to a TV screen in real time with minimal delay. The technology works directly between devices, creating a secure communication channel.
To activate the mode on the TV, press the button Input on the remote control and select the application Screen Share. In the window that opens, select connection standby mode. On an Android smartphone, the process may differ depending on the manufacturer's shell. Owners of a clean Android need to open the notification curtain and find the item Broadcast or Cast.
- 📱 On smartphones Samsung the function is called Smart View and is located in the quick settings panel.
- 📱 Devices Xiaomi use the item Broadcast in the "Connection and sharing" section.
- 📱 Phones Huawei and Honor offer the function Projection in the control center.
After running a search on your phone, your TV should appear in the list of available devices. LG. Click on it to initiate the connection. A request to confirm the connection may appear on the TV screen - agree to it using the remote control. The image from your phone will instantly appear on the big screen.
If the image is slow or jerky, try closing background applications on your smartphone and moving closer to the router. Obstacles in the form of walls significantly weaken the Wi-Fi Direct signal.
It is worth noting that when using Miracast the phone screen does not go dark, which can lead to increased battery consumption. For long viewing sessions, it is recommended to connect your smartphone to a charger. In addition, in this mode, the phone may heat up more than usual due to the active operation of the Wi-Fi module and video encoding processor.
⚠️ Attention: The Screen Share function is not intended to transfer protected content (DRM) from some streaming services. You may see a black screen instead of video when trying to stream paid movies via screen mirroring.
Using the LG ThinQ app
Official app LG ThinQ provides a deeper level of smartphone integration with the TV ecosystem than simple screen casting. This tool allows you not only to display an image, but also to use your phone as a control panel, transfer media files from the gallery, and even display notifications from your phone on the TV screen.
To get started, download the application LG ThinQ from the store Google Play. After installation, launch the app and log in to your account LG or create a new one. Click the add device button and select the "TV" type. The app will automatically scan the network and find compatible devices within range.
When the TV appears in the list, tap on it to pair. A confirmation code will appear on the TV screen, which must be entered in the application on your smartphone. After a successful pairing you will have access to the full control menu. In the section Dashboard or Remote you can switch channels, adjust the volume and launch applications on the TV.
| Function | Description | Requirements |
|---|---|---|
| Magic Mobile Connection | Screen mirroring and cursor control | Wi-Fi network, ThinQ application |
| Photo & Video Share | Transferring files from the gallery to TV | Access to phone storage |
| Remote Control | Complete replacement of the physical remote control | Infrared port (optional) or Wi-Fi |
| Sound Sync | Sound transmission to external speakers | Supported audio system |
One of the useful functions is the ability to broadcast photos and video directly from the application gallery, without taking up the smartphone screen. This is especially convenient when showing family archives to guests. Just select the desired file in the interface ThinQ and press the play button - the file will open on the TV, and at this time you can use the phone for other tasks.
What to do if the application does not see the TV?
Make sure that the "Mobile TV Connection" function is enabled on the TV in the network settings. Also check if the AP client isolation mode is activated on the router, which prevents devices from seeing each other on the local network.
Broadcast via Google Home (Chromecast)
Many modern TV models LG have built-in support for the technology Chromecast built-in. This allows you to stream content from supported applications (YouTube, Netflix, Spotify) directly without duplicating the entire smartphone screen. This approach saves phone battery power and unloads the processor, since the TV itself downloads the stream from the Internet.
To use this function, make sure that the application is installed on your smartphone Google Home. Launch it and find your TV in the list of devices. If the TV is not visible, check whether the Chromecast function is enabled in the TV settings (it is usually active by default on new models).
Open the application from which you want to watch content, for example, YouTube. Find the broadcast icon (a rectangle with waves) in the corner of the video player. Click on it and select your TV LG from the list. The video will begin to play on the large screen, and the smartphone can be used as a remote control to rewind or adjust the volume.
The advantage of this method is the high quality of the picture and the absence of delays characteristic of screen mirroring. Since the stream goes directly from the server to the TV, the quality of the connection depends only on the speed of your Internet, and not on the power of the smartphone.
Using the built-in Chromecast gives the best picture quality for streaming services and does not drain the phone's battery as quickly as Screen Share.
Wired connection via HDMI and USB-C
If the wireless connection is unstable or you need to transfer pictures in maximum quality without compression, a wired connection is the best solution. For this you will need an adapter USB-C to HDMI. It is important to check whether your specific USB-C port supports the standard DisplayPort Alt Mode, since not all smartphones can output a video signal through the charging connector.
Connect the adapter to the smartphone, and then connect it to the TV with a regular cable. HDMI. Switch the signal source on the TV to the appropriate port (for example, HDMI 1). The image should appear automatically. In the phone settings, you can select the operating mode: mirroring or extending the desktop (if supported).
- 🔌 Advantage: Complete absence of delays, which is critical for dynamic games.
- 🔌 Stability: The signal is not interrupted due to interference on the air or overload of the Wi-Fi network.
- 🔌 Power: Many adapters have an additional USB-C port for connecting charging during operation.
When using a cable, the TV can detect a smartphone as a multimedia device and offer special interfaces such as DeX for Samsung or desktop for Huawei. This turns the smartphone into a kind of personal computer, allowing you to work with application windows on a large screen using a mouse and keyboard.
⚠️ Attention: Cheap adapters without active electronics may not work with modern smartphones. It is recommended to use certified accessories from reputable manufacturers to avoid problems with resolution or lack of sound.
When connected via HDMI, the default sound may remain in the phone. Go to the sound settings or click on the audio output icon in the notification shade to redirect it to the TV.
Solving common problems and errors
Despite the simplicity of the procedures, users sometimes encounter problems connecting. The most common situation is that the TV does not appear in the list of available devices. In 90% of cases, this is due to the fact that the devices are connected to different Wi-Fi networks (for example, one to the main one, the other to the guest one). Check the network name (SSID) in the settings of both gadgets.
Another common problem is desynchronization of sound and image during wireless broadcasting. This often happens when the Wi-Fi signal is weak or the channel is heavily loaded by neighboring networks. Try rebooting the router or switching the TV to a different frequency band, if possible.
If there is no picture when connecting via HDMI, make sure that the correct signal source is selected on the TV remote control. Also check that the cable is firmly inserted into the connectors. Sometimes changing the HDMI port helps, since some ports can be reserved for specific functions (for example, ARC).
Procedure for failures:1. Reboot the router.
2. Restart the TV (completely unplug from the outlet for 10 seconds).
3. Restart your smartphone.
4. Forget the Wi-Fi network on both devices and reconnect.
In rare cases, the problem may lie in outdated TV firmware, which does not support the new Wi-Fi encryption protocols used by modern smartphones. In such a situation, updating the TV software via a USB drive from the manufacturer's official website is the only solution.
Why does the connection disappear while watching?
This may be caused by the energy-saving settings of the smartphone, which turn off the Wi-Fi module when the screen goes dark. Disable the "Suspend while sleeping" feature for the streaming application in the battery settings.
Frequently asked questions (FAQ)
Can I connect my phone to an old LG TV without Smart TV?
Yes, this is only possible via a wired connection. You'll need a USB-C (or Micro-USB) to HDMI adapter. Older models do not support the Miracast or Chromecast wireless protocols, so cable remains the only option for transmitting video and audio.
When broadcasting YouTube via Screen Share, why does the video stop if I minimize the application?
When using the screen mirroring function (Screen Share/Miracast), the TV shows exactly what is happening on the phone display. If you minimize the app, the desktop appears on the phone screen and the TV broadcasts it. For background work, use the built-in Chromecast function (cast icon in the player), rather than duplicating the entire screen.
How to transfer sound from my phone to the TV if I play a game?
When connected wirelessly via Screen Share, the sound is transmitted automatically along with the image. If you are using an HDMI cable, audio should also come through the cable. If there is no sound, check your phone's media settings and make sure the audio output device is set to TV or HDMI.
Is it safe to connect your phone to someone else's hotel TV?
Be careful. When you connect to someone else's Wi-Fi network, your data may be vulnerable. Do not enter passwords for banking applications. It's better to use a wired HDMI connection to watch downloaded movies, as this creates a physical connection without transferring data through the hotel's local network.
Do all Android phones support cable output?
No, not all. Video output technology via USB-C (DisplayPort Alt Mode) is available mainly in flagship models and devices in the mid-plus segment. Budget smartphones often have a USB 2.0 port without video output support, so they can only use the wireless method or use special docking stations with DisplayLink technology (requires driver installation).