Modern smartphones have powerful screens, but sometimes this is not enough to watch movies, photos or presentations with friends. In such situations, owners of devices based Android often wonder how to display an image on a large display. The company's TVs LG with operating system webOS offer several convenient solutions for this task, from wireless technologies to wired connections. The choice of a specific method depends on the model of your TV, the version of the phone's operating system and the quality of your home network.
The process of synchronizing devices has become much easier in recent years thanks to the development of wireless data transfer standards. You don't have to be a networking expert to enjoy content on the big screen. However, there are nuances that can affect the stability of the connection and the quality of the picture. In this article, we will analyze in detail each available method, explain the technical features and show you how to avoid common mistakes when connecting.
Preparing equipment and network for connection
Before starting any manipulations, you need to make sure that both devices are ready for interaction. A fundamental condition for wireless signal transmission is that the smartphone and TV are on the same local network. This means that they must be connected to the same Wi-Fi router. If your phone uses mobile data, and the TV is connected by cable or to another network, you will not be able to establish a connection.
It is also worth checking that the software on both gadgets is up to date. Manufacturers regularly release updates that improve the stability of modules Wi-Fi Direct and correct compatibility errors. On the TV LG go to the settings menu and find the support section to check the version webOS. On a smartphone, the update is usually located in the “About phone” section in the system settings.
☑️ Ready to connect
Please note that some older router models may not correctly process multicast traffic required for video broadcasting. If you experience constant connection dropouts, try rebooting your router by unplugging it for 10-15 seconds. This action will clear the network cache and may eliminate temporary software glitches that are interfering with data transfer.
⚠️ Attention: If you are using a Guest Wi-Fi network or a network with isolated clients (Client Isolation), the devices will not see each other. Make sure that your router settings allow direct interaction between connected gadgets.
Using the built-in Screen Share function on LG
TVs LG equipped with built-in technology Miracast, which allows you to broadcast an image without installing additional software. On the remote control, find the button with the inscription Input or the house icon to bring up the signal source selection menu. In the list of available applications, select Screen Share or “Screen casting”. After startup, a connection waiting window will appear on the TV screen.
On the smartphone side, the process may differ slightly depending on the shell manufacturer Android. Open the Quick Settings panel by swiping down from the top and find the icon called “Cast”, “Smart View”, “Wireless Monitor” or “Projection”. Clicking this button will search for available displays within network range. When your TV appears in the list, simply tap its name to start pairing. If your TV does not appear in the list, try turning off and on the Wi-Fi module on your smartphone. Sometimes it helps to update the list of available devices. LG TV, just tap its name to start pairing.
If your TV does not appear in the list, try disabling and re-enabling the Wi-Fi module on your smartphone. Sometimes this helps to update the list of available devices.
After a successful connection, the image from your phone will appear on the TV screen in real time. The signal delay is usually minimal and amounts to a fraction of a second, which is comfortable for viewing videos or photos. However, it is worth considering that when actively using the phone, for example, when typing or scrolling the feed, some actions may be duplicated on the large screen, which is not always convenient.
LG TV Plus application for advanced control
For those for whom standard functions are not enough, the company LG has developed a proprietary application LG TV Plus. It is available for download in the store Google Play and provides a deeper level of integration between devices. Once the app is installed and launched, you will need to go through the pairing process by following the on-screen instructions. The application will automatically find the TV on the network and request confirmation of connection.
The main advantage of this solution is the ability not only to duplicate the screen, but also to use the smartphone as an advanced control panel. You can navigate the TV's menus, enter text using your phone's keyboard, and even launch certain apps on the TV itself. The screen mirroring function in the application often works more stable than system broadcasting, as it uses optimized data transfer protocols.
Features of codecs in LG TV Plus
The application automatically selects the best video compression codec depending on the bandwidth of your network, which reduces the likelihood of image artifacts.
It is worth noting that The functionality of the application may vary depending on the year of manufacture of your TV model. Older models may only support basic control functions, while newer models with webOS the latest versions offer full access to multimedia capabilities. If you plan to frequently use your smartphone to control your media center, installing this application is a mandatory step.
⚠️ Attention: The LG TV Plus application requires permission to access the local network. If you accidentally denied this access during the first launch, the TV search function will not work. Check the resolutions in your smartphone settings.
Wired connection via HDMI adapter
When the wireless connection is unstable or you need to transfer images in maximum quality without compression, a wired connection is the best solution. To do this, you will need a special adapter that converts the signal from the phone's charging port into an interface HDMI. The type of adapter depends on the connector of your smartphone: it can be for modern flagships or for older models. It is important to understand that not all smartphones support video output through the charging port. The technology that allows this to be done is called USB Type-C for modern flagships or Micro-USB for older models.
It is important to understand that not all smartphones support video output through the charging port. The technology that allows this to happen is called MHL (Mobile High-Definition Link) or DisplayPort Alt Mode. Before purchasing an adapter, be sure to check the specifications of your phone model on the manufacturer's official website. Using a cheap adapter that does not support video output will not give any result other than charging the device.
| Adapter type | Compatibility | Audio support | Power required |
|---|---|---|---|
| USB-C HDMI | Flagships Samsung, Huawei, Sony | Yes, stereo | No (often) |
| MHL adapter | Old Android models | Yes | Yes (required) |
| Slimport | Rare models (Nexus, LG) | Yes | No |
| Universal converter | Models without video output | Depends on the model | Yes |
The connection is made by connecting the adapter to the phone and the cable HDMI to the TV. After this, press the button Input on the TV remote control and select the corresponding port into which the cable is inserted. The image should appear instantly. In some cases, you may need to change the screen resolution in the phone settings if the TV does not recognize the signal automatically.
A wired connection guarantees zero signal delay, which is critical for gaming and watching dynamic scenes in movies.
Broadcasting content via Chromecast and YouTube
Many modern TVs LG have built-in technology support Google Chromecast. This allows you to stream content directly from apps without taxing your phone's processor by duplicating the entire screen. This method is ideal for watching videos from YouTube, Netflix or other streaming services. In the application interface, find the rectangle icon with waves in the corner - this is the standard broadcast symbol.
When you click on this icon, the application will prompt you to select a device for playback. Select your TV from the list and the video will start playing directly on the TV. The advantage of this method is that you can minimize the application or even lock the phone and playback on the TV will continue. This significantly saves smartphone battery power compared to full screen duplication.
If your TV model does not have a built-in Chromecast, you can purchase an external set-top box Chromecast from Google and connect it to the port HDMI. Setting up the device takes a few minutes through the app Google Home. After setup, the principle of operation remains the same: you select content in the application and send it to an external receiver.
⚠️ Attention: When using the “Cast” function inside applications, the video is transmitted directly from the server to the TV. If the Internet on the TV is slow, the video may freeze, even if the phone has an excellent connection.
Solving common problems and errors
Despite the simplicity of modern technologies, users often encounter difficulties during setup. One of the most common problems is that the TV sees the network, but does not appear in the list of available devices for broadcasting. In this case, it is recommended to check the firewall settings on the router. Sometimes anti-virus software or network security settings block the ports necessary for the protocol to work Miracast.
Another common situation is out of sync with audio and video. This often happens when the signal is weak Wi-Fi or the channel is overloaded by neighboring networks. Try switching your TV and phone to the 5 GHz frequency if your router supports dual-band operation. This frequency is less congested and provides a higher data transfer rate, which is critical for a video stream.
Why does sound disappear during duplication?
Some applications protect copyrighted content (DRM) and block audio transmission during wireless screen duplication. In such cases, only a wired connection or the Cast function inside the application helps.
If the image on the TV does not fill the entire screen or has black bars around the edges, change the aspect ratio in the TV settings. This option is usually called "Screen Format" or "Aspect Ratio" and is found in the Picture menu. Select the “Fit to screen” or “16:9” mode to remove cropping of the edges of the picture.
Why does the phone not see the LG TV?
Most often, the problem lies in the fact that the devices are connected to different Wi-Fi networks (for example, one to 2.4 GHz, the other to 5 GHz, if they are divided into different SSIDs). Also make sure that the Screen Share application is running on the TV and is in connection standby mode.
Is it possible to mirror the screen without the Internet?
Yes, Miracast and Wi-Fi Direct do not need the Internet to work. The devices create a direct connection with each other. The main thing is that the Wi-Fi modules on both gadgets are turned on.
Does screen mirroring affect the phone's battery?
Yes, wireless broadcasting significantly increases energy consumption, since the Wi-Fi module operates in high power mode, and the processor encodes the video stream. It is recommended to keep the phone on charge during long periods of viewing.
Do all Android phones support output to LG TV?
Almost all smartphones running Android 5.0 and above support the Miracast standard. However, some budget models may have reduced functionality or a missing driver for a wireless display.
How to improve picture quality when broadcasting?
To improve quality, ensure a stable Wi-Fi signal, close background applications on your phone that consume traffic, and, if possible, use the 5 GHz band. Also check if the TV's picture power saving mode is turned on.