Modern smartphones and televisions are no longer isolated devices, but rather a unified entertainment ecosystem. If you own a popular smartphone, Samsung Galaxy A51 and TV brand LG, you have a great opportunity to display images on a large screen without unnecessary wires. This is especially useful when you need to share photos with friends, run a presentation, or simply watch YouTube videos on a huge screen.
In this guide, we'll cover all available wireless connection methods, from built-in system features to third-party apps. WiFi technology Allows you to transmit high-definition video streams, ensuring stable picture and sound. You don't need to be an IT expert to set this up, as the process is fully automated by the manufacturers.
Before you begin setup, make sure both devices are working properly and have the latest software versions. Both devices must be connected to the same WiFi network., otherwise detection will be impossible. We'll explore the nuances of the Miracast and DLNA protocols, as well as the specifics of working with multimedia content.
Equipment preparation and basic requirements
The success of a wireless connection directly depends on the quality of the infrastructure. First, check that your router is broadcasting a 5 GHz signal, if possible, as this will provide better throughput for the video stream. Older routers with a 2.4 GHz frequency can handle video transmission, but may sometimes experience delays or reduced image quality.
Both devices, Samsung A51 And LG Smart TV, must be within a strong signal range. If your phone shows only one Wi-Fi bar and your TV is located near the router, you won't be able to achieve a stable connection. Distance between devices is also important: Miracast, a technology often used for this purpose, doesn't require direct line of sight, but thick concrete walls can weaken the signal.
- 📶 Make sure that the "Guest Network" mode is disabled on the router for both devices, as they may end up on different subnets.
- 🔄 Check for firmware updates on your TV using the menu
Settings → All settings → Support → Software update. - 📱 Enable location services on your Samsung smartphone, as some versions of Android require this to find nearby devices.
⚠️ Note: If your router uses Client Isolation, devices will not be able to see each other. This option must be disabled in the router settings.
Checking operating system versions is an important step. On TVs LG With the webOS operating system, the interface may differ depending on the model year. On smartphones Samsung With the One UI shell, the names of the menu items may also vary slightly, but the logic remains the same.
Using LG's built-in Screen Share feature
The easiest and most native way to connect your phone Samsung A51 to the TV LG — This uses Screen Share technology, which is based on the Miracast standard. This method allows you to mirror your smartphone's screen to your TV in real time. You don't need to install any additional software, as the feature is built into the Android system.
To get started, take your TV remote and find the button labeled Input or the house icon to open the signal source selection menu. Find and launch the program from the list of available applications. Screen ShareA message will appear on the TV screen indicating that the device is ready to connect and is waiting for a signal input.
Now let's move on to the smartphone. Pull down the notification shade by swiping down from the top and find the icon Smart ViewIf you don't see it on the first page, swipe the panel sideways or tap the three dots to edit the buttons. Once the feature is activated, the phone will begin searching for available displays.
- 📺 Select your TV from the list of found devices LG.
- 🔒 A connection request may appear on the TV screen, which you will need to confirm with the remote control.
- 📱 The image from your phone will automatically stretch to fill the entire TV screen.
Stream quality depends on the WiFi channel load. If you notice audio and video desync, try closing background apps on your smartphone that are consuming internet. Also, keep in mind that when mirroring your screen, your smartphone may become hotter as the processor is actively encoding the video stream.
☑️ Check before connecting Screen Share
Stream media via Smart Share (DLNA)
If your goal is not screen mirroring, but viewing photos, video files or listening to music stored in memory Samsung A51, it is better to use DLNA technology. In the ecosystem LG This function is implemented through the application Smart Share or a built-in media player. This allows you to stream content in its original quality without straining the phone's processor.
On TV LG launch the application Photo, Video or Music Depending on the file type, select your smartphone from the list of sources. Samsung A51A notification will appear on your phone's screen, requesting access. This access request must be granted. After this, the phone's file system will become accessible via the remote control.
Unlike Screen Share, here the phone acts as a server, and the TV receives the data. This means you can use your smartphone for other tasks, such as making calls or texting, without interrupting the movie playback on the big screen. However, it's most convenient to control playback (pause, rewind) using the TV remote.
| Parameter | Screen Share (Miracast) | Smart Share (DLNA) |
|---|---|---|
| Transmission type | Screen mirroring | File transfer |
| Using the phone | The screen is busy | Free for other tasks |
| Quality | Depends on compression | Original |
| Control | From the phone | From the TV remote control |
⚠️ Please note: When transferring large video files via DLNA, short-term buffering may occur if the WiFi network is overloaded with other devices.
Setting up AirPlay 2 for Apple and LG owners
Although the topic of the article is about connection Samsung, many users are switching between ecosystems or using hybrid setups. TVs LG newer models support the protocol AirPlay 2If you decide to use your iPhone or iPad with this TV, setup will take just a few seconds. For owners Samsung A51 This information is useful for understanding the versatility of modern TVs.
To activate the function on the TV LG go to Settings → Connect to a mobile device. Find the item Apple AirPlay settings and make sure the switch is set to "On." Here you can also set an access code or allow password-less connections for devices on the same network.
Despite the fact that Samsung A51 works on Android, there are third-party apps on Google Play that emulate AirPlay signal transmission, allowing you to stream content from Android devices to AirPlay receivers. However, native support Miracast On Samsung it works more stable and does not require the installation of “cheats”.
Why is AirPlay 2 better than regular AirPlay?
AirPlay 2 adds multi-room audio support, buffering for smoother playback, and the ability to control playback via Siri. This is less significant for Android smartphones, but it demonstrates the level of development of the webOS platform on LG TVs.
Streaming from YouTube and Netflix apps
The most popular use case for connecting a smartphone and a TV is video streaming. Applications YouTube, Netflix, IVi Others have a built-in "Cast" feature. This is the most energy-efficient option, as the TV automatically downloads the video stream from the internet, using the phone only as a remote control.
Open the app YouTube on Samsung A51In the upper right corner of the video or in the app header, tap the rectangle icon with WiFi waves. Select your TV from the list that appears. LGThe video will start playing on the big screen, and a control panel will appear on your phone, allowing you to pause, change the volume, or add videos to the queue.
The advantage of this method is that it delivers the highest picture quality (up to 4K HDR) and will drain your phone's battery almost completely. Furthermore, you can minimize the YouTube app or even turn off your smartphone's screen—playback on your TV will continue uninterrupted.
- 🎬 Make sure the Google accounts on your phone and the YouTube app on your TV match for quick pairing.
- 🌐 For Cast to work, a stable internet connection is required on the TV.
- 🔊 The sound will be output through the TV's speaker system or a connected soundbar.
Solution and troubleshooting
Even with proper setup, technical difficulties may arise. If the TV LG doesn't see the phone Samsung A51First, check if AP isolation mode is enabled on your router. Restarting the WiFi module on both devices also helps: turn WiFi off and then back on in the settings.
If the image is choppy or intermittent, try moving the router away from the microwave or other sources of interference. You can also try changing the WiFi channel in your router settings to a less crowded one (for example, 1, 6, or 11 for 2.4 GHz). For 5 GHz, channel selection is usually automatic, but manual selection can also help.
In some cases, the problem lies with the antivirus software or firewall installed on your smartphone. Try temporarily disabling network protection and checking the connection. Also, make sure your TV is running the latest version of webOS, as older versions may have compatibility issues with newer versions of Android.
⚠️ Note: Menu interfaces may change after firmware updates. If you can't find the item described, use the search in the TV settings (magnifying glass icon).
Frequently Asked Questions (FAQ)
Is it possible to connect Samsung A51 to an old LG TV without Smart TV?
Without a built-in WiFi module and a Smart TV operating system, you won't be able to connect your phone directly. You'll need to purchase an external set-top box (such as Chromecast, Mi Stick, or Android Box) that plugs into the HDMI port and adds Smart TV functionality to your TV.
Why is there no sound when connecting via Screen Share?
Check the audio settings in the Smart View menu on your phone. Sometimes the default audio remains on the phone. Also, make sure your TV isn't set to "Video Only." Some apps (such as browsers) may have DRM protection blocking audio or video transmission.
Does connecting a phone to a TV affect internet speed?
When using Screen Share, traffic flows within the local network and doesn't consume internet bandwidth, but it does consume WiFi airtime. When using Cast (YouTube), the TV downloads the video itself, so internet speeds on other devices may decrease if the bandwidth is limited.
How to disconnect a phone from a TV?
On your phone, open the notification panel, tap the active Smart View icon, and select "Disable." On your TV, simply close the Screen Share app or switch the input source to HDMI or broadcast TV.