Modern smartphones have powerful multimedia capabilities, but even the highest quality display cannot compare with the diagonal of a home theater. Owners of devices based Android often wonder how to display an image on a large screen without using extra wires and adapters. Wireless data transmission technology solves this problem, allowing you to broadcast content instantly.
The Company LG has introduced advanced communication protocols into its TVs WebOS that make it easy to synchronize mobile gadgets. You don't need to be a technician to set up Screen Share or use the system's built-in features. It is enough to have a stable network and a couple of minutes of free time for the initial configuration of the equipment.
In this article we will analyze all available connection methods, from native system tools to third-party utilities. You will learn how to avoid image delays, what video formats are supported out of the box, and what to do if devices cannot see each other on a shared network. Correct setup will ensure comfortable viewing of movies and photos for the whole family.
Preparing equipment and Wi-Fi network
The first and most critical condition for successful synchronization is that both devices are on the same local network. The router must distribute a signal at a frequency supported by both gadgets; it is advisable to use the range 5 GHz for transmitting high-resolution video without buffering. If your phone is connected to the mobile data, and your TV is connected to your home Wi-Fi, you will not be able to establish a connection.
Check that the Smart TV function is turned on on the TV and the wireless module is activated. Some models require you to manually launch the application to receive the signal, which may be called LG The Smart TV function is turned on and the wireless module is activated. Some models require you to manually launch an application to receive the signal, which may be called Screen Share, Device Connector or simply “Connect to a mobile device” in the input sources menu.
⚠️ Attention: If your router supports the Guest Network function, make sure that both devices are connected to the main network and not the guest one. Often, client isolation settings prevent devices from seeing each other within the same access point.
It is also worth making sure that the software of both devices is updated to the latest versions. Manufacturers regularly release patches that improve the stability of protocols Miracast and DLNA. Outdated firmware may contain bugs that prevent devices from shaking hands when attempting to connect.
Using the built-in Screen Share function
The most universal way is to use technology Miracastwhich is implemented in TVs through the Screen Share function. This method allows you to completely duplicate the smartphone screen, including the desktop, menus and running applications. The image is transmitted directly via Wi-Fi Direct, which minimizes the load on the router. LG implemented through the Screen Share function. This method allows you to completely duplicate the smartphone screen, including the desktop, menus and running applications. The image is transmitted directly via Wi-Fi Direct, which minimizes the load on the router.
To get started, launch the application on the TV Screen Share. A connection waiting window will appear on the screen with the name of the device, which will be displayed in the list of available networks on your phone. Now you need to go to the smartphone settings.
On devices Android the path to the function may differ depending on the manufacturer's shell. Usually it is located in the notification shade or in the settings menu:
- 📱 Samsung: the function is called Smart View and is located in the quick settings panel.
- 📱 Xiaomi/Redmi: look for the "Broadcast" or "Wireless Monitor" item in the "Connection and Sharing" section.
- 📱 Pure Android (Pixel, Motorola): the option is called "Broadcast screen" in the "Connected devices" menu.
- 📱 Huawei/Honor: the function is called "Projection" or "Wireless Projection".
After activating the search, the phone will start scanning the air. When your LG TVappears in the list, click on it. A connection confirmation request may appear on the TV screen, which must be accepted with the remote control. After this, the phone screen will be completely copied onto a large panel.
☑️ Checklist for successful connection
Official LG TV Plus application
For those who prefer control through a convenient interface, the company LG has developed an official application LG TV Plus. It is available on the Google Play Market and allows you not only to stream media files, but also to use your phone as a remote control, as well as transfer contacts and run applications on the TV.
Install the application on your smartphone and launch it. The app will automatically begin searching for compatible devices on the network. After detecting the TV, you will need to enter the code displayed on the screen, or confirm pairing by pressing a button on the remote control. This ensures a secure connection.
The main advantage of this method is the ability to transfer photos and videos from the gallery in the background. You can minimize the app and continue using your phone while a slideshow or movie is playing on your TV. However, this method is not suitable for duplicating the entire screen (games, browser), since it is focused on media content.
Limitations of the free version of LG TV Plus
The application is completely free, but requires an LG account for some synchronization functions. In rare cases, on older TV models (before 2016), the functionality may be limited only to the basic control panel without photo transfer.
It is important to note that the application works more stable if the router does not enable the separation of 2.4 GHz and 5 GHz frequencies into different SSIDs. If devices “see” a network with different names, even if they are in the same infrastructure, the discovery protocol may not work correctly.
Broadcast via Google Home (Chromecast built-in)
Many modern models LG Smart TV have built-in support for the technology Google Cast (Chromecast). This allows you to stream content directly from applications such as YouTube, Netflix, Spotify or the Chrome browser, without having to duplicate the entire smartphone screen.
To check for the feature, look in the application (for example, YouTube) for the icon of a rectangle with waves in the corner. If you click on it, a list of available devices will open. Select your TV LG, and the video will start playing on the TV, controlled from your phone.
This method is considered the most energy efficient, since the phone only acts as a remote control, and the TV downloads the video stream on its own from the Internet. This frees up the smartphone's processor resources and saves battery power, and also allows you to receive incoming calls without interrupting viewing.
| Characteristics | Screen Share (Miracast) | Google Cast | LG TV Plus |
|---|---|---|---|
| Transmission type | Screen mirroring | Streaming | Media and remote control |
| Dependency on phone | High (screen should be lit) | Low (can be blocked) | Medium |
| Quality pictures | Depends on the Wi-Fi signal | Maximum (up to 4K HDR) | Standard |
| Sound | Transmitted from the phone | Transmitted directly to TV | Transmitted to TV |
Google Cast is ideal for watching online videos, as it reduces the load on the smartphone and provides better picture quality, while Miracast is better suited for games and demonstrating the interface.
Third-party applications for broadcasting
If standard methods do not work or the functionality is not enough, third-party solutions from the store come to the rescue Google Play. Applications like Cast to TV, AllCast or Web Video Caster are able to broadcast video files that are not supported by the TV's native player, or content from secure sites.
The principle of their operation is to capture a video stream and recode it on the fly into a format understandable to the TV, or by directly sending a link to a rendering device. This is especially useful for watching videos from torrents or cloud storage services that do not have built-in Cast support.
When using such apps, pay attention to the ad resolution. Free versions often contain obtrusive banners that block the image on the phone, although playback may work fine on the TV. Paid versions are free of these restrictions and offer a more stable codec.
⚠️ Warning: Some streaming applications may require access to the file system and location. Please review requested permissions carefully to avoid leaking personal information. Download apps only from trusted sources.
Solving problems with connection and delays
A common problem with a wireless connection is desynchronization of sound and image or periodic jerking of the picture. This usually indicates that the wireless channel is overloaded or the signal is weak. Try to move closer to the router or eliminate physical obstacles between the devices.
If the TV LG does not see the phone, try restarting both devices. In 80% of cases, this solves problems with the network services cache. It is also worth checking the date and time settings: if they are very different, security protocols may block the connection.
To reduce input lag when playing games over Wi-Fi, it is recommended:
- 📶 Switch the router to the channel with the least traffic (use Wi-Fi analyzers).
- 📶 Disable while other devices are loading onto the network (tablets, laptops).
- 📶 Use standard 802.11ac (Wi-Fi 5) or later.
If the video is constantly buffered during broadcasting, try lowering the playback quality in the source application (for example, from 4K to 1080p). This often solves the problem of unstable Internet.
Comparing methods and choosing the optimal one
The choice of connection method depends on your goals. It is indispensable for demonstrating presentations or games, providing full interactivity. For family viewing of movies in high quality, the built-in Miracast, providing full interactivity. For family viewing of movies in high quality, the built-in one is better suited Chromecast or application LG TV Plus.
Do not forget that wireless data transmission consumes a significant amount of traffic if the content is not stored locally. When using mobile data (via an access point), keep an eye on the remaining gigabytes, although external traffic is not consumed for local broadcasting through a router.
Technologies are developing, and interfaces may change. Always check the relevance of the menu in the instructions for your specific TV model, since the version of the operating system WebOS affects the location of the items.
Why is there no sound when connected?
Often the sound remains on the phone due to the Bluetooth settings or connection profile. Check whether the audio output device "TV" is selected in the Android volume mixer during the broadcast.
Why doesn't the LG TV see the phone in the list of devices?
Most often the problem lies in the fact that the devices are connected to different frequencies of the router (guest network) or the geolocation module on the phone is turned off, which is necessary for the detection protocol to work in Android. Also try rebooting the router.
Is it possible to connect a phone to a TV without Wi-Fi?
A wireless connection is impossible without a Wi-Fi module, since it is this module that provides the communication channel. However, you can use a wired connection via a USB-C to HDMI adapter if your phone supports video output, but this will no longer be a connection via Wi-Fi.
Does screen casting affect the phone's battery?
Yes, active video streaming via Wi-Fi and the operation of the smartphone display significantly consumes battery power. It is recommended to keep the phone connected to the charger during long viewing sessions.
How to improve picture quality when there is lag?
Make sure that the phone and router are in direct line of sight. Disable background downloads on other devices. If you are using Miracast, try reducing the phone screen resolution in the settings before connecting.