Modern smartphones such as Samsung Galaxy A31, have high-resolution screens, but sometimes you want to enjoy content on a larger display. Casting multimedia or the entire screen to a TV wirelessly is a standard feature that doesn't require complex equipment. Users often look for a way to display photos, videos, or games on Smart TV without using extra cables.
In this article, we'll take a detailed look at how to set up a connection between your gadget and TV using only a local network. Wi-FiYou will learn about the built-in ecosystem tools. Android and specialized applications from SamsungProper settings will ensure stable data transmission without desynchronization of sound and image.
Before you begin setup, make sure both devices are working properly and have access to the router. It's important to understand that streaming quality directly depends on your internet speed and the signal strength in your room. We'll cover several methods to help you choose the best one for your TV model.
Preparing equipment and setting up the network
The foundation of a successful connection is a properly organized local network. The first step is to ensure that your Samsung A31 and the TV are connected to the same access point Wi-FiIf the devices are on different subnets (for example, one on a guest network and the other on the main network), they will not see each other.
Check the software version on both devices. Correct operation of data transfer protocols often requires up-to-date drivers and system libraries. Update the TV firmware through the settings menu and check for updates. Android on a smartphone.
⚠️ Note: Some routers have an AP Isolation feature that prevents devices within the network from communicating. If your TV doesn't detect your phone, go to your router settings and disable this feature.
Connection stability also depends on the signal frequency. For high-definition video streaming (4K or Full HD), it's preferable to use the 5 GHz, as it provides higher throughput. However, its range is shorter than that of a standard 2.4 GHz.
Using the Smart View feature
The most effective way for equipment owners Samsung is the use of a native function Smart ViewThis tool is built into the shell. One UI and is optimized to work with TVs of various brands that support the protocol DLNA or Miracast.
To activate the feature, pull down the notification shade by swiping down from the top. Find the icon Smart View and tap it. Your smartphone will begin searching for available displays within range. Your TV's name will appear in the list, which usually matches the model or the name you specified.
- 📱 Click on the TV name in the list of detected devices to start pairing.
- 📺 A request to allow the connection may appear on the TV screen, which you will need to confirm with the remote control.
- 🔄 Once connected, the image from the smartphone will be broadcast to the big screen in real time.
Function Smart View Not only does it allow you to mirror your screen, but it also controls playback. You can minimize the app on your phone and continue using it for other tasks while the video plays on your TV. However, keep in mind that mirroring your screen may cause your smartphone to become hotter than usual.
Why might Smart View not work?
The feature may not be activated if Miracast support is disabled on the TV or if the Android version is too old for the current TV firmware.
Streaming via Google Home and Chromecast
If the built-in tools do not provide the required quality or your TV is based on Android TV, an excellent solution would be an application Google HomeIt allows you to use technology Chromecast built-in, which is built into many modern TV models.
Download and install the application Google Home from the store Play MarketAfter installation, the program will automatically scan the network and find connected smart devices. Select your TV from the list of device cards.
In the device control menu, find the button Broadcast your screen (Cast my screen). The system will warn you about a possible decrease in phone performance during the broadcast. Confirm the action, and the image will appear on the display.
⚠️ Note: When using Chromecast, the load falls primarily on the router, as it redirects the data stream. Make sure the router isn't overloaded with other tasks, otherwise lag may occur.
The advantage of this method is the ability to stream content from apps that don't support a direct connection. You can mirror literally everything that's happening on the display. Samsung A31, including games and browser.
Setting up DLNA for multimedia
You don't need to duplicate the entire screen to view photos or videos saved on your phone's memory. Protocol DLNA Allows you to stream only media files to your TV, which acts as a renderer. This frees up your smartphone and saves battery life.
Many modern TVs have a built-in media player. Simply open the Media or Gallery app on your TV and select the source—your smartphone. Samsung A31A request for access permission may appear on your phone.
An alternative option is to use third-party controller apps such as BubbleUPnP or VLC for AndroidIn these programs, you need to select the output mode (Cast) and specify the target TV. The file will begin playing on the big screen, and your phone can be used as a remote control.
| Protocol | Quality | Delay | Battery consumption |
|---|---|---|---|
| Smart View | High | Minimum | High |
| Chromecast | Adaptive | Low | Average |
| DLNA | Original | Absent | Short |
Solution: If the TV doesn't see the phone
Sometimes the setup process can run into technical obstacles. The most common issue is that devices simply can't find each other on the network. This often happens if the router broadcasts two networks with the same name but different frequencies, and the devices are "scattered" on different channels.
Try rebooting your router by unplugging it from the power outlet for 10-15 seconds. It's also worth checking your router's firewall settings. Sometimes antivirus software on your smartphone can block incoming connections from the TV.
- 🔌 Make sure Screen Mirroring or AnyCast is enabled on your TV.
- 📡 Check if the "Data Saver" mode is enabled on your phone, which may limit background activity.
- 🔄 Try forgetting the Wi-Fi network on both devices and reconnecting using the password.
If the problem persists, it may be due to codec incompatibility. Some older TVs don't support the modern video compression formats used. Samsung A31In this case, installing a third-party player on your TV will help, for example, Kodi or VLC.
☑️ Connection diagnostics
Optimizing quality and performance
To achieve the best results, it is important to minimize interference. If you are using a range 2.4 GHzTry to move microwave ovens and cordless phones, which create noise, away from your router. This is especially important in densely populated apartment buildings.
Close background apps on Samsung A31 Before starting the broadcast, this will free up RAM and CPU resources, reducing the likelihood of image stuttering. You can also try changing the screen resolution or refresh rate in the developer settings, but this requires caution.
⚠️ Please note: TV and smartphone interfaces are updated regularly. The location of menu items or function names may differ from those described in the instructions. Always refer to the manufacturer's latest manuals.
If you plan to watch heavy 4K movies, make sure your router supports the standard. AC or AX (Wi-Fi 6)Older routers may simply not be able to handle such a dense data stream, and the video will constantly buffer.
Frequently Asked Questions (FAQ)
Is it possible to connect Samsung A31 to a TV without Wi-Fi?
Yes, this is possible using a USB-C to HDMI cable. However, this requires the phone to support video output technology (MHL or DisplayPort Alt Mode), which is not available on all A-series models. The A31 may not support video output via cable, so Wi-Fi remains the primary wireless method.
Why is there no sound on the TV during broadcasting?
Most often, the issue is resolved by switching the audio output in the Bluetooth settings or in the app menu itself (for example, YouTube). Sometimes, restarting the Smart View app or reconnecting the device helps.
Does connecting a phone to a TV affect internet speed?
Yes, because all traffic goes through the router. If you're streaming 4K online video, it can significantly load the bandwidth, and other devices on the network may work slower.
Is it safe to leave your phone connected to your TV?
Yes, it's safe. However, your phone may become very hot during extended broadcasts. It's recommended to remove the case and place the device on a hard surface for better cooling.