Modern smartphones have powerful screens, but sometimes you want to enjoy content on a larger screen. Owner Samsung Galaxy A31 often faces the need to display an image on a TV to watch a movie with the whole family or to show off photos. Fortunately, technology Wi-Fi allows you to do this without unnecessary wires and complicated settings. In this article, we'll cover in detail all the wireless connection methods available for the latest One UI firmware versions.
The process of synchronizing devices has become as automated as possible, but there are a number of nuances that can affect the stability of the connection. Data transfer protocols require both devices to be on the same local network. We'll look at the system's built-in tools. Android and proprietary utilities from the South Korean manufacturer, which ensure the best picture quality. Understanding the basic principles of DLNA and Miracast will help you avoid common setup errors.
It's important to keep in mind that streaming quality directly depends on your router's speed and distance. If you plan to watch movies in high definition, make sure you're using the appropriate frequency. 5 GHzNext, we'll provide step-by-step instructions to help you set up image streaming in minutes. Proper network configuration is essential to avoiding lag and artifacts on your screen.
Network preparation and compatibility testing
The first and most critical step is to ensure that both devices have the same network environment. Your Samsung A31 The TV and the phone must be connected to the same router. Users often make mistakes when connecting their phone to mobile internet. 4G/5G, and the TV to your home Wi-Fi, making them "invisible" to each other. Check your Wi-Fi settings in your smartphone's notification shade.
Modern Smart TVs support standards Miracast And DLNA By default, but on some models, the signal reception function may be disabled in the menu. You will need the remote control to enter the TV's network settings and activate connection standby mode. Without this step, the device search may not return any results. Make sure your TV has the latest firmware version.
⚠️ Important: If your router supports split-band (guest network), make sure both devices are not in isolated network segments, otherwise direct data exchange will be blocked.
For stable operation, it is recommended to use the encryption standard WPA2 or WPA3Old security protocols can limit video streaming speed, causing audio and video to become out of sync. Owners of dual-band routers should switch their devices to the 5 GHz frequency if they are located in close proximity to an access point.
Using Smart View on the Samsung A31
The most effective way to broadcast your screen for device owners Samsung is a built-in utility Smart ViewIt allows you to mirror the contents of your smartphone's display to your TV in real time. To launch, pull down the top menu bar and find the corresponding icon. If it's not on the first page, swipe the notification bar to the right.
Once activated, the system will begin searching for available signal receivers within the network range. When your TV's name appears on the screen, tap it. The TV display may prompt you to confirm the connection, which you'll need to accept with the remote. From this point on, the image will be displayed. Samsung A31 will be duplicated on the big screen.
- 📺 Open the Quick Settings panel by swiping down from the top.
- 🔍 Click on the icon
Smart Viewand select your TV from the list. - ✅ Confirm the connection on the TV screen if prompted.
- 🎮 Use your phone as a remote control or play games on the big screen.
An important feature is the ability to control playback directly from your phone while the TV simply displays the image. You can minimize the app, and the video will continue playing, which is convenient for multitasking. However, it's important to remember that in mirroring mode, your smartphone's screen must remain on, which drains battery power.
☑️ Check before connection
Stream video via apps and Chromecast
If your goal is to watch movies from online cinemas, using full screen mirroring isn't always optimal. Many modern apps, such as YouTube, Netflix or Kinopoisk, have a built-in Cast button. This method transmits to the TV not the image from the screen, but a link to a video stream, which the TV downloads automatically. This reduces the load on the processor. Samsung A31 and saves energy.
For this feature to work, your TV must support the technology. Google Chromecast built-in or have the corresponding app installed. In the video player interface, look for the distinctive rectangle with waves in the corner. Clicking on it will display a list of available devices. Selecting a TV will start playing content directly through its network module.
The advantage of this approach is independence: you can use your phone for calls or texting without interrupting the movie. Picture quality is often higher in this case, as the TV decodes the video internally, using its own codecs. However, a stable internet connection is required, as traffic is routed through the service's cloud, not locally.
⚠️ Note: Some apps may block the display of protected content (HDCP) on external displays if they deem the connection unsafe. In this case, a black screen with sound will appear on the TV.
It's worth noting the difference in resource consumption. When streaming via Cast, the smartphone only serves as a remote control, so it generates less heat. This is especially true for mid-range models, which include Galaxy A31, when watching 4K videos for a long time.
Why does the video lag when broadcasting?
If the video stutters while using Smart View, try lowering the resolution in the app settings or moving your phone closer to the router. When using the Cast button, the issue is more likely related to internet speed than the Wi-Fi connection between the devices.
Comparison of connection methods and their characteristics
The choice of connection method depends on your specific needs: whether you need to present a presentation, play games, or simply watch a movie. Each method has its own technical limitations and advantages. Understanding the difference between mirroring and streaming will help you avoid disappointment.
The table below compares the key features of the two main methods available to owners. Samsung A31This will help you quickly decide which option to choose in a particular situation.
| Characteristic | Smart View (Mirroring) | Chromecast / Streaming |
|---|---|---|
| Load on the phone battery | High | Low |
| Phone screen addiction | The screen should be lit. | You can turn off the screen |
| Image quality | Depends on the Wi-Fi strength | Maximum (depending on TV) |
| Game support | Yes (with a delay) | No (video/photo only) |
As can be seen from the data, for games and demonstrating the OS interface, the only alternative option remains Smart ViewHowever, for passive viewing of internet content, it's preferable to use the built-in buttons in apps. This ensures a smoother picture without the jerkiness typical of over-the-air video stream compression.
Solving common connection problems
Even with proper configuration, situations may arise where devices cannot see each other. Often, the problem lies in the network settings cache or a temporary failure of the discovery service. First, try rebooting the router by unplugging it from the power outlet for 10-15 seconds. This will clear the ARP address table and refresh the connections.
If your TV still doesn't appear in the list Smart View, check your router's firewall settings. Some providers block local data exchange between Wi-Fi network clients by default (AP Isolation). You'll need to access your router's admin panel, usually accessible at 192.168.0.1 or 192.168.1.1.
- 🔄 Restart both devices: turn off and on the TV and phone.
- 📡 Make sure that the VPN on your phone, which can change the region, is turned off.
- 🔌 Check if your TV's memory is full by closing unnecessary applications.
- 🛠 Reset network settings on your phone in the menu
Settings → General settings → Reset.
It's also worth paying attention to the date and time. If the system time on your smartphone and TV differ significantly, security protocols may be blocking the connection. Set up automatic time synchronization via the network in the settings of both devices. This is a small detail that is often overlooked.
⚠️ Note: Smart TV interfaces and Android versions are constantly being updated. The layout of menu items may differ from what's described, so look for similar function names.
Optimizing image and sound quality
Once successfully connected, it's important to configure the output settings for maximum comfort. In the menu Smart View You can change the resolution of the streamed image on your phone. If the picture on your TV looks blurry or cut off at the edges, try changing the aspect ratio.
The audio track also requires attention. By default, the sound may come through your phone's speakers, which defeats the purpose of connecting to a larger screen. In the streaming control panel, make sure the audio output is set to TV. If there is sound but the video is lagging, try lowering the quality in the video player settings.
You can adjust the frame rate for viewing photos and slideshows. Samsung A31 Allows you to create automated presentations that will be broadcast to your TV in high definition. This is a great way to turn your TV into a digital photo frame during family gatherings.
Why doesn't the TV detect the Samsung A31 phone?
Most often, the devices are on different networks (for example, one on a guest network and the other on the main network). The TV's discovery feature may also be disabled. Check whether Wi-Fi Direct or a similar option is enabled in the TV's network settings.
Is it possible to connect a phone to a TV without Wi-Fi?
Yes, using a USB-C to HDMI cable. However, for Samsung A31 This may not work natively, as USB 2.0 ports don't always support video output. A special adapter supporting DisplayPort Alt Mode technology or third-party receiver apps on Android TV will be required.
How to reduce audio latency during broadcasting?
Lag is often caused by codecs. Try changing the Bluetooth codec or audio format in your phone's developer settings (if available). When using Smart View, latency is minimal, but depends on processor load.
Does phone connection affect internet speed?
When using Chromecast (casting via a link), the phone uses almost no data, as the TV downloads the video itself. When mirroring (Smart View), the phone encodes the video and streams it, which can put a strain on the Wi-Fi channel, but not necessarily the internet if the content is local.