Modern smartphones such as Samsung Galaxy A51, have become powerful multimedia centers capable of storing thousands of hours of high-resolution video and photos. However, viewing content on a small screen isn't always convenient, especially when you want to share the experience with family or just relax on the couch. That's why the question arises: how to display your phone's content on a big-screen TV? Samsung without the use of unnecessary wires, remains one of the most popular among users.
Fortunately, wireless technology WiFi Direct Built-in ecosystem features allow you to do this in seconds. You don't need to buy additional adapters or HDMI cables if your TV supports Smart TV. In this article, we'll cover all the ways to sync devices, cover router and smartphone settings, and troubleshoot common connection issues.
We will focus on the native application. Smart View, which is pre-installed in the One UI shell. This is the most stable and high-quality method for transmitting video streams. However, there are alternative methods that can be useful in specific situations, such as when using third-party players or needing to stream video from browsers that don't support standard protocols.
Equipment preparation and network requirements
Before you begin setup, you need to make sure that both devices are yours. Samsung A51 and the TV are in the same network conditions. This is a fundamental requirement for the technology to work. Miracast and DLNA. If your phone is connected to a 4G/5G mobile internet connection and your TV is connected to your home network, the connection will fail.
Make sure your router supports the standard. 802.11n or higher (ac, ax). Older routers may not be able to handle heavy, high-resolution video streams, resulting in constant buffering and audio desync. It's also recommended that both devices operate in the 5 GHz band if they are in the same room.
Check that WiFi is enabled on both devices. On TVs Samsung Sometimes you need to manually enable external connection mode in the network menu, although this happens automatically in newer models. Make sure your phone isn't in power saving mode, which can block background device discovery processes.
⚠️ Note: If your router is configured with AP Isolation, your phone and TV won't be able to see each other. This feature is often enabled on guest networks for security, but it blocks local device communication.
An important aspect is the software version. Samsung A51 It's advisable to install the latest security and system updates, as they often fix wireless protocol bugs. Similarly, your TV's firmware must be up-to-date for codecs to function correctly.
Using Smart View on the Samsung A51
The easiest and most effective way to broadcast an image is to use the built-in tool Smart ViewThis technology allows you to not only display images but also control playback, use your phone as a remote control, or even launch a game from the comfort of your couch. The interface is intuitive and requires no third-party software.
To launch, pull down the notification shade by swiping down from the top. Find the icon Smart View (This may be called "Cast" or "Mirroring," depending on your firmware version.) If the icon isn't in the quick access panel, swipe right and tap the three dots or the plus sign to add it. Tap the icon, and your phone will begin searching for available displays on the network.
In the list that appears, select your TV. SamsungA connection permission prompt may appear on the TV screen. Confirm it using the remote control. Once the connection is established, your phone's screen will be mirrored on the larger screen. You can minimize the app and use your smartphone, but the video will continue to play on the TV.
☑️ Pre-broadcast check
Smart View offers several options. You can choose "Mirroring," which displays the entire phone interface, or mirror a specific app, such as YouTube or Netflix. In the latter case, the phone can be used for calls or texting without interrupting the video stream on the TV.
What should I do if Smart View doesn't see my TV?
If the search yields no results, try rebooting your router. Also, make sure there's no heavy app running on your TV that's blocking the receiving ports. Sometimes, force-closing the Smart Things app on your phone and restarting the search helps.
Setup via SmartThings app
For deeper integration of ecosystem devices Samsung uses the app SmartThingsIt comes pre-installed on Samsung A51 and allows you to not only broadcast your screen, but also control your TV settings, switch inputs, and even use your phone's camera as a webcam for video calls on the big screen.
Open the SmartThings app and go to the "Devices" tab. Tap "Add Device" and select "TV" or "Monitor." The app will automatically scan the network and prompt you to add your TV. Once paired, you'll have full control over your media content. Tap the TV icon in the list of devices, then select "Screen Casting" or "Mirroring."
The advantage of this method is the ability to create scenarios. For example, you can set up the TV to automatically turn on and start streaming when you enter the living room (if you have smart home sensors). SmartThings also lets you stream files from your phone to your TV without compressing them, which is convenient for viewing photo galleries.
| Function | Smart View (Curtain) | SmartThings (App) | Google Home |
|---|---|---|---|
| Screen mirroring | Yes | Yes | Yes |
| Managing TV settings | No | Yes | Partially |
| File transfer | No | Yes | No |
| Creating scripts | No | Yes | Yes |
It is important to note that the application SmartThings requires account registration Samsung AccountIf you haven't already logged into your profile, the system will ask you to log in. This is necessary to sync your settings and save user preferences in the cloud.
Streaming via Google Home and Chromecast
If your TV Samsung supports technology Chromecast built-in (built into many recent models), you can use standard Android tools. This is a universal method that works not only with Samsung phones but with any Android device.
This will require an app. Google Home, which can be downloaded from the Play Market. Install the app, sign in to your Google account, and make sure your phone and TV are connected to the same WiFi network. Your TV should appear in the list of devices in the Google Home app.
Tap the TV icon in the Google Home app. In the control menu that opens, select the "Cast my screen" button. Confirm the action, and the image from Samsung A51 will appear on your TV. This method is especially good for casting Chrome browser tabs or apps that don't have their own "Cast" button.
You can also cast directly from apps. YouTube, Netflix, or Spotify have a dedicated button with a rectangle and waves (Chromecast). By clicking it, you select the target device. In this case, the phone acts only as a remote control, and the video stream goes directly from the service's servers to the TV, saving battery life.
Troubleshooting connection and latency issues
Despite the simplicity of the technology, users often encounter problems: the image flickers, there's no sound, or the phone can't detect the TV at all. One common cause is a congested WiFi channel. If there are many devices on your network or neighbors are using the same channel, interference can occur.
Try changing the WiFi channel in your router settings to a less congested one (e.g., 1, 6, or 11 for 2.4 GHz). The issue could also be caused by antivirus software or a firewall on your router blocking local connections. Temporarily disable packet filtering to check.
⚠️ Please note: When streaming games or fast-paced videos, input lag can reach 1-2 seconds. This is critical for gaming, so be sure to enable "Game Mode" in your TV settings, which minimizes image processing.
If there's sound but no picture (a black screen), the issue may be with the content's DRM protection. Some paid services block screen mirroring, requiring the use of a native app on the TV. In this case, a wireless connection won't work; you'll have to use a cable or the built-in Smart TV app.
Another cause of problems could be an outdated WiFi driver on your router or TV. Restarting the router often resolves issues with frozen DHCP services, which prevent new connections from assigning valid IP addresses. Also, check if your router has any MAC address restrictions.
Why does the image quality drop?
The real-time video compression algorithm depends on your WiFi speed. If the signal is weak (less than -70 dBm), the system automatically reduces the resolution to maintain smoothness. Move closer to the router.
Alternative methods and third-party applications
In cases where standard methods don't work, third-party apps from the Google Play Store come to the rescue. Programs like Web Video Caster or TV Cast Allows you to stream video from browsers that don't have built-in Chromecast support. They work by redirecting the stream.
Install the companion app on your phone and, if needed, on your TV (via the Samsung Apps store). Once paired, you can open web pages with videos in the app's built-in browser and send them to your TV. This is a great way to watch content from sites that don't have an official app.
There is also a technology DLNA, which allows you to stream media files (photos, videos, music) from your phone to your TV via the Gallery or My Files app on your Samsung device. Select a file, press the menu button (three dots), and select "Play on device." The TV will act as a renderer.
For advanced users, a connection method is available via Wi-Fi Direct Without a router. Some Samsung TV models support direct hotspot creation. In this case, the phone connects to the WiFi network provided by the TV itself. Transfer speeds in this mode can be higher since traffic doesn't go through the router.
Frequently Asked Questions (FAQ)
Is it possible to connect Samsung A51 to a TV without WiFi?
Yes, it's possible. You can use a USB-C to HDMI cable. However, it's important to check whether your specific model supports it. Samsung A51 Video output via USB. Many mid-range models lack video output via the charging port. In this case, the only wireless option is Miracast, which requires a WiFi module but not necessarily an active internet connection or router (Wi-Fi Direct mode).
Why is there no sound when connecting my phone to TV?
Most often, switching the audio output resolves the issue. In Smart View, tap the casting settings and ensure the audio is routed to "TV" and not "Phone." Also, check the volume settings on the TV itself. In rare cases, rebooting both devices is required to reset the audio drivers.
Does phone connection affect internet speed?
When using Chromecast (where the phone only controls it), no, the traffic goes directly to the TV. When mirroring (Smart View), the phone encodes the video and sends it to the TV, which puts a strain on the WiFi channel and can reduce internet speeds on other devices, especially in the 2.4 GHz band.
Will the phone screen work if I minimize the app?
Yes, when using Smart View or SmartThings, your phone's screen remains active. You can reply to messages, scroll through your social media feed, or even turn off the phone's screen (in some modes), and videos will continue playing on the TV. However, if you launch a heavy game, performance may drop due to the double load on the processor.
How do I turn off the broadcast?
The fastest way is to pull down the notification shade again Samsung A51 and press the "Disconnect" button in the Smart View widget. Alternatively, press the "Home" or "Back" button on the TV remote and select HDMI or TV from the menu to disconnect the wireless connection.