Modern smartphones such as Samsung Galaxy A31Televisions have become powerful multimedia centers, but sometimes a 6.4-inch screen simply isn't enough for comfortable viewing. Users regularly want to show family photos on the big screen or watch a movie from an online cinema. Fortunately, wireless data transfer technology makes this possible without unnecessary wires and complicated settings, provided you know the right techniques.
In this article, we will take a detailed look at how to establish a stable connection between your mobile device and Smart TV, using only your home Wi-Fi network. We'll explore the built-in Android operating system tools, the capabilities of the proprietary One UI interface, and third-party solutions for TVs that don't support modern standards. Follow the instructions to enjoy high-quality content on the big screen.
Preparing equipment and checking the network
The first and most critical step is to ensure that both devices have the same network environment. Your Samsung A31 The device and TV must be connected to the same Wi-Fi router access point. If you're using mobile data on your phone and the TV is connected via a cable to another provider or via LAN, direct discovery of devices on the local network will be impossible. Ensure that the Client Isolation feature isn't enabled on your router, which prevents devices from seeing each other.
It's also worth making sure that the software on both devices is up to date. For your phone, go to Settings → Software Update and check for updates. The menu on your TV may have different names, for example, Settings → Support → Software UpdateOutdated data transfer protocols can cause audio and video to become out of sync or cause a complete loss of connection.
⚠️ Note: If your router supports dual-band mode (2.4 GHz and 5 GHz), make sure both devices are connected to the same frequency. Sometimes mixed networks can block DLNA or Miracast discovery protocols.
To ensure stable 4K video streaming, your Wi-Fi connection must be fast enough. If the router is located far from the TV, the signal may be unstable. In this case, it is recommended to use Wi-Fi repeater or connect the TV to the router via a LAN cable, leaving the phone on a wireless connection.
Using Smart View on the Samsung A31
The easiest and most effective way for Samsung owners is to use the native function Smart ViewThis tool is built into the One UI interface and doesn't require any additional apps. It uses Miracast technology, providing low-latency video streaming, making it ideal not only for videos but also for games and presentations.
To activate the broadcast, pull down the notification shade on your Samsung A31 Double-swipe. Find the icon labeled "Smart View." If it's not on the first screen, swipe the quick access menu to the right. Once tapped, the system will search for available devices within range. Select your TV from the list.
- 📺 A request to allow the connection may appear on the TV screen - confirm it with the remote control.
- 🔄 To change the screen orientation, use the "Rotate" button in the broadcast control menu.
- 🔊 The sound will automatically switch to the TV's audio system unless otherwise specified.
It's important to note that when using Smart View, your phone's screen is mirrored on the TV. This means incoming notifications, messages, and calls will be visible to everyone in the room. To avoid any awkward situations, enable "Do Not Disturb" mode before watching.
Setting up Google Home (Chromecast) streaming
Many modern TVs, even those not from Samsung, have built-in support for the technology. Google ChromecastThis allows you to stream content directly from apps (YouTube, Netflix, Twitch) or even mirror your entire smartphone screen. To do this, on your Samsung A31 The Google Home app, which often comes bundled with Google services, must be installed.
Launch the app and find your TV in the list of devices. Click on the device icon, then select "Cast my screen." The system will warn you about possible lag and battery drain, which is normal when actively streaming video.
| Parameter | Smart View (Miracast) | Google Home (Chromecast) |
|---|---|---|
| Connection type | Direct (P2P) | Via a router |
| Router dependency | Low | High |
| Picture quality | Depends on the signal | Stable (adaptive) |
| Battery consumption | High | Average |
The advantage of using Google Home is the ability to control playback from your phone, just like a remote control. You can pause videos, adjust the volume, or select other videos without interrupting the streaming experience on the big screen. This method also often provides a more stable picture when watching online videos.
Broadcasting via video service apps
The built-in streaming feature in content aggregator apps deserves special attention. YouTube, Netflix, IVI, Okko, and other services have a dedicated button, usually located in the corner of the video player. This method differs from full screen mirroring in that the phone acts only as a remote control, while the TV automatically downloads the video stream.
This is the most energy efficient method since the processor Samsung A31 It doesn't encode or transmit real-time video streams. Battery consumption is minimal, and image quality is the highest possible for your internet plan. Click the icon Cast (rectangle with Wi-Fi waves), select TV and enjoy.
⚠️ Note: For this feature to work, your TV and phone must be authorized in the same ecosystem or simply be on the same network. Some older TV models may not support direct authorization from apps.
If the broadcast button is inactive or grayed out, check for app updates in the store. Google Play MarketAlso, make sure the appropriate app (such as YouTube on TV) is running on your TV, although in most cases, simply having the TV on is sufficient.
Troubleshooting connection and buffering issues
Despite the simplicity of the technology, users often encounter problems: the image flickers, the audio lags behind the video, or the phone doesn't detect the TV at all. One common cause is Wi-Fi congestion, especially in apartment buildings. In this case, switching the router to a less congested frequency or channel can help.
If you experience constant buffering when watching online videos, try reducing the playback quality in the player settings on your TV or phone. The high bitrate of 4K content can clog up the channel if the Wi-Fi signal is weak. You should also close background apps. Samsung A31, which can consume traffic.
☑️ Connection diagnostics
In some cases, antivirus software or router firewall settings may block the ports required for DLNA and Miracast protocols. Try temporarily disabling the firewall or adding devices to the trusted list. If the issue persists, reset the network settings on your phone using the menu. Settings → General Settings → Reset → Reset Network Settings.
What to do if there is sound but no picture?
This is a common codec issue. Try changing the screen resolution in your phone's settings or restarting the Smart View app. Sometimes changing the aspect ratio helps.
Alternative methods and third-party software
If standard methods don't work, or your TV is an older generation Smart TV, you can use third-party apps. There are many solutions available in the Play Market, such as Web Video Caster, TV Cast or BubbleUPnPThese programs can find almost any DLNA-compatible TV.
They work in a similar way: you open the video in a browser or the app's built-in player, select the target device, and the broadcast begins. Some of them allow you to stream files stored on your phone's memory, which may not be readable by the TV using standard tools due to the codec format.
- 📂 Support for a wide range of video and audio file formats.
- 📡 Ability to broadcast Chrome or Firefox browser tabs to a TV screen.
- 🎮 Some apps allow you to play simple games using your phone as a touchpad.
Using third-party software is a great solution for older models, but keep in mind that free versions are often cluttered with ads. For regular use, it's better to consider an inexpensive Android TV box, which will support all modern protocols regardless of your TV's age.
Frequently Asked Questions (FAQ)
Why doesn't my Samsung A31 phone see my TV in the list of devices?
Most likely, the devices are connected to different Wi-Fi networks (for example, one to a guest network and one to the main network) or the router's access point isolation feature is enabled. Also, check if the TV screen prompts for connection confirmation.
Does connecting a phone to a TV affect internet speed?
Yes, streaming online video uses a lot of data. If you're watching a 4K movie, it can significantly reduce the speed for other devices on the network, causing lag in games or video calls.
Is it possible to play games on a phone and output them to a TV?
Yes, Smart View allows you to mirror your screen, but there may be an input lag of 1-2 seconds. This is critical for fast-paced shooters, but is perfectly acceptable for turn-based strategy games or quiz games.
Does your phone battery drain faster when connected to a TV?
Absolutely. Video streaming and constantly running Wi-Fi at high power significantly increase power consumption. It's recommended to keep your phone connected to a charger while watching long movies.