Modern smartphones such as Samsung Galaxy A51, have become powerful multimedia centers, capable of storing thousands of movies and TV series. However, watching content on a small 6.4-inch screen isn't always convenient, especially when you want to share it with family or friends. That's when it becomes necessary to stream images to a larger TV screen using wireless networking.
There are several ways to accomplish this, and most of them don't require the purchase of additional cables or complex adapters. The basic operating principle is based on technology. Wi-Fi Direct or streaming protocols such as DLNA And Chromecast built-inYour phone and TV must be on the same local network to exchange data with minimal latency and high picture quality.
In this article, we will examine in detail all the available methods for connecting a smartphone. Samsung A51 to the TV, including the built-in functions of the system Android and third-party apps. You'll learn how to set up screen sharing, play videos from your browser, or use specialized streaming apps. Proper setup will ensure a stable connection and enjoyable viewing of high-definition content.
Preparing equipment and a Wi-Fi network
Before you begin setup, you need to make sure your equipment is ready to use. First, check that your TV supports the feature. Smart TV and has a built-in wireless module. Without this capability, direct Wi-Fi connection will be impossible, requiring cabled alternatives.
A critical requirement is that both devices are on the same network. The router must broadcast a signal on a frequency supported by both devices, although the 5 GHz band is better for video transmission due to its higher throughput. Make sure client isolation isn't enabled on the router, which prevents devices from seeing each other within the local network.
⚠️ Important: If your router distributes two networks with the same name (2.4 GHz and 5 GHz), make sure that your phone and TV are connected to exactly one of them, and not to different frequencies, as some older routers can isolate these segments from each other.
It is also worth updating the software on Samsung A51 to the latest available version. In your phone's settings, go to Settings → Software Update and check for new system versions. Manufacturers often release patches that improve protocol stability. Miracast and correcting connection errors with various TV models.
☑️ Check before connection
Screencasting via Smart View
The simplest and most native way for equipment owners Samsung is the use of the function Smart ViewThis technology is built into the shell. One UI and allows you to mirror your smartphone's image to your TV screen in real time. No additional apps are required to launch it; simply use the notification shade.
Swipe down from the top of the screen to open the Quick Settings panel. Find the icon labeled Smart View (Sometimes it may be called "Cast" or have a screen icon with a signal). Tap it, and your phone will begin searching for available devices on your Wi-Fi network. Select your TV from the list that appears.
After selecting a device, a connection permission prompt may appear on the TV screen. Use your remote control to confirm the connection by selecting "Allow" or "Accept." The image from your phone will instantly appear on the big screen, and you can control the content using your smartphone as a remote.
It is important to understand that when using Smart View The phone broadcasts absolutely everything that happens on its screen. This means incoming notifications, messages, and system sounds will be visible and audible to all viewers. For a comfortable viewing experience, it is recommended to enable "Do Not Disturb" mode before starting the session.
Using Chromecast technology
Many modern televisions, even those that are not products Samsung, support technology Google Chromecast built-inThis feature allows you to stream content directly from apps such as YouTube, Netflix or browser Chrome, without duplicating the entire smartphone screen. This significantly saves battery life. Samsung A51 and unloads the processor.
Open the app containing the video you want to watch. In the upper or lower right corner of the interface, look for the distinctive rectangle icon with Wi-Fi waves in the corner. Clicking it will display a list of available devices. Select your TV from the list.
Unlike full-screen mirroring, your phone acts as a remote control. You can minimize an app, reply to a message, or even turn off your smartphone's screen—and the video will continue playing uninterrupted on your TV. Image quality is often higher in this mode, as the TV automatically downloads the stream from the internet.
| Parameter | Smart View (Broadcast) | Chromecast (App Casting) |
|---|---|---|
| Phone CPU usage | High | Low |
| Battery consumption | Significant | Minimum |
| Reaction to notifications | Visible on TV | Does not affect the video |
| Working with the screen off | The broadcast is terminated. | Playback continues |
What should I do if the Chromecast icon doesn't appear?
Make sure the app you're streaming from is updated to the latest version. Also, check that your phone and TV are on the same subnet (sometimes a guest Wi-Fi network can block device detection).
Setting up DLNA via the Samsung TV Plus app
If your goal is to play video files stored in memory Samsung A51, the optimal solution would be to use the protocol DLNAFor this purpose, on TVs Samsung often the app is pre-installed Samsung TV Plus or the "Media" function, which allows you to see files on connected devices.
Launch the media app on your TV and select "Phone" or "Mobile Device" as the source. Your smartphone may prompt you to allow access to media files for the selected TV. Confirm the connection so the TV can access your gallery.
Navigation is done using the TV remote. You can view photos, videos, and even listen to music stored on your phone. The advantage of this method is that the TV handles video decoding, ensuring smooth playback even of large 4K files.
⚠️ Please note: The DLNA protocol does not support all video formats. If the file does not play, your TV may not have a built-in codec for that format (e.g., MKV or AVI), and you will need to convert it or use a third-party player.
Connection problems and their solutions
Despite the apparent simplicity, users often encounter a situation when the phone Samsung A51 The TV isn't showing up in the list of available devices. Most often, the problem lies in the router settings or a temporary network service outage. The first step should always be to reboot both devices: unplug the TV for 10 seconds and reboot the smartphone.
Another common cause is the use of a guest Wi-Fi network. Many routers isolate guests from the main local network by default, so a phone and TV, even connected to the same router, can't "see" each other. Check the network name and ensure both devices are connected to the main SSID, not the guest one.
If the problem persists, try resetting the network settings on your TV. In the TV menu, find the section Network → Network Reset and reconnect to Wi-Fi. You can also delete the saved network on your phone and reconnect by entering the password.
Alternative streaming apps
If the built-in tools don't work or the functionality isn't sufficient, you can use third-party apps from the store. Google PlayA popular solution is the app SmartThings from Samsung, which turns your phone into a universal remote control and allows you to more flexibly control your TV connection.
For TVs of other brands, aggregator apps such as Web Video Caster or LocalCastThey can send videos from websites or file managers directly to the TV screen, bypassing standard restrictions. Installing such software on Samsung A51 Expands compatibility capabilities.
When using third-party software, carefully monitor the permissions you grant to the app. It will require access to your local network and files to function. Some free versions may contain ads that will appear on your phone's screen while it's searching for your device.
Why does the video lag when broadcasting?
Image lag and stuttering are most often caused by a weak Wi-Fi signal. Try moving closer to your router or TV. Other possible causes include bandwidth congestion from other devices or low internet speeds if you're streaming high-definition content.
Is it possible to connect a phone to a TV without Wi-Fi?
Yes, you will need an adapter cable for this. USB Type-C to HDMI. However Samsung A51 does not support video output via USB, so wireless connection remains the only native method without the use of special transmitter adapters.
How do I mute my phone but leave it on the TV?
When casting the entire screen (Smart View), the audio is usually duplicated. To ensure audio is only output to the TV, reduce the media volume on your phone to a minimum (but not completely), and increase the volume on your TV remote. In some apps, you can adjust the audio settings in the video player menu.