Smartphone owners Samsung Galaxy A20 We often want to show off photos, videos, or gameplay on a big screen. Modern technology makes this possible without the hassle of wires, using only wireless network capabilities. Wi-FiThis is not only convenient, but also significantly expands the multimedia capabilities of your device, turning an ordinary TV into an entertainment center.
The synchronization process may seem complicated only at first glance. In fact, in the operating system Android and the shell One UI from Samsung All the necessary tools are already built in. You won't need to buy expensive adapters or HDMI cables if your equipment supports wireless data transfer standards. Simply configure both devices correctly and ensure they are on the same local network.
In this article, we'll take a detailed look at all available methods, from built-in features to third-party apps. We'll also explore potential connection issues and how to resolve them. You'll learn how to manage content, minimize lag, and enjoy high-quality images on a large display without sacrificing comfort.
Preparing devices for wireless connection
Before you begin setting up your broadcast, you need to make sure your equipment is ready to go. The first step is to check your network compatibility and status. Samsung A20 must be connected to a Wi-Fi router. It's important that the TV is also connected to the same network. If you're using a guest network or the 5 GHz band on one device and the 2.4 GHz band on another with client isolation, the connection may fail.
Please pay attention to the software version. On your smartphone Samsung A20 It is recommended to update the system to the latest available version, as older versions Android may have bugs in the media transfer module. Also, make sure that the Smart TV function is enabled on your TV or that it supports the technology MiracastOn some TV models, this option must be activated manually through the network settings menu.
⚠️ Note: If your router is configured to automatically switch between 2.4 and 5 GHz frequencies, this may cause connection interruptions during streaming. For stable operation, it's best to force both devices to use the same frequency, preferably 5 GHz, if supported by both devices.
Check your smartphone's battery. Wirelessly transmitting high-resolution video streams consumes a significant amount of power. If the battery Samsung A20 below 20%, it is better to connect the device to charge before starting the session to avoid a sudden shutdown at the most inopportune moment.
☑️ Checking your broadcast readiness
Using the built-in Smart View feature
The easiest and most reliable way to display an image is to use native technology. Smart ViewThis feature is built into the shell. One UI and does not require the installation of additional software. It is based on the standard Miracast, which ensures a direct connection between devices with minimal latency.
To activate the function, you need to unlock the screen Samsung A20 and swipe down from the top to open the quick settings panel. Find the icon with the name Smart ViewIf it's not on the first page, swipe left or tap the edit panel button to add an icon. Once tapped, the phone will begin searching for available displays within range.
When your TV's name appears in the list, tap it. A permission request may appear on the TV screen. Use your remote control to select "Allow" or "Accept." Your smartphone's screen will then be mirrored to the TV.
- 📱 This feature allows you to duplicate your entire screen, including notifications and the desktop.
- 🎮 Ideal for live game demos and presentations.
- 🎬 Supports audio transmission through TV speakers.
- ⚙️ Allows you to change the aspect ratio of the image in the settings.
It is important to note that when using Smart View The smartphone's screen may remain on, which impacts battery life. However, some apps, such as YouTube or Netflix, may stream images in the background, allowing the phone to be used for other tasks.
Setup via the Samsung SmartThings app
For deeper ecosystem integration Samsung It is recommended to use the application SmartThings. It comes pre-installed on most models, including A20, but may require an update through the store Galaxy Store or Google PlayThis method is especially useful if the standard Smart View works unstably.
After launching the application SmartThings You must log in to your account Samsung AccountThe system will automatically scan the network and find compatible devices. If your TV is also manufactured by Samsung, the process will go as smoothly as possible. With other brands (LG, Sony, Philips), functionality may be limited to basic screen mirroring.
Select your TV from the list of devices and press the button ScreencastingThe app will offer to adjust the image quality. Here you can select the resolution and frame rate. For watching movies, it's best to select high quality, and for gaming, select the response-priority mode.
| Parameter | Description | Recommendation |
|---|---|---|
| Permission | Picture quality (HD, FHD) | 1920x1080 for clarity |
| Frame rate | Smooth motion (30, 60 fps) | 60 fps for games |
| Audio format | Audio stream type | Stereo or Dolby |
| Energy saving | Turn off your phone screen | Turn on to save |
The app also lets you use your phone as a remote control. You can change channels, adjust the volume, and play content directly from your smartphone's interface. This is especially convenient if your original TV remote is lost or has a complex interface.
What should I do if SmartThings doesn't detect my TV?
Make sure DLNA or Anynet+ is enabled on your TV. Also, check if your router's firewall is blocking the local connection between devices. Sometimes, temporarily disabling your smartphone's VPN can help.
Streaming video from browsers and YouTube
Often, users don't need to mirror the entire screen, but just launch a specific video. In this case, the protocol Google Cast (Chromecast built-in). It is built into many modern TVs and apps, such as YouTube, Netflix, VLC, and the browser. Chrome.
Open the YouTube app on Samsung A20In the upper right corner of the video or in the app interface, look for the rectangle icon with waves (broadcast). Click it and select your TV from the list. The video will start playing on the big screen, and your phone will act as a remote control.
The advantage of this method is that the phone doesn't waste resources encoding the video stream. It simply sends a command to the TV telling it where to download the video. This allows you to watch 4K content without lag, even on a smartphone with average performance.
- 🌐 Works over the Internet, not just through a local network.
- 🔋 Minimal smartphone battery consumption.
- 🎞️ Supports high quality 4K and HDR.
- 📵 You can minimize the app and use other phone functions.
If you are using a browser Google Chrome, you can broadcast any open tab. Click the three dots in the browser menu, select Broadcast... and specify the source (a tab or the entire screen). This is a great way to show a web page or document that doesn't have a native app on your TV.
Third-party screen mirroring apps
In situations where standard means Samsung If your TV isn't working or is an older model, third-party solutions can help. Store Google Play offers a variety of utilities that emulate the work of Miracast or AirPlay.
One of the popular solutions is the application Web Video CasterIt allows you to stream video files stored on your phone's memory, as well as stream video from browsers. The app scans the network, finds DLNA-compatible devices, and sends a data stream to them.
Another option is - TeamViewer QuickSupport or AnyDesk, if remote control is required, although they are less suitable for local streaming due to latency. For gaming and video, it's better to use specialized mirrorers, such as Screen Mirroring or Cast to TV.
⚠️ Warning: Free versions of third-party apps often contain ads that may obscure the image or interrupt playback. Carefully read the permissions the app requests during installation to avoid accessing your personal data.
When using third-party software, it is important to consider the processor load. Samsung A20Live video encoding can cause the device to heat up. If you notice a significant increase in temperature, take a break or reduce the streaming quality in the app settings.
Resolving and eliminating delays
Even with perfect settings, technical issues can arise. The most common is audio-video desynchronization. If the audio lags behind or precedes the image, try changing the sound mode to "Standard" in your TV settings or disabling additional audio effects.
Another problem is low frame rates and image stuttering. This often indicates a weak signal. Wi-FiMove closer to the router or remove any physical obstacles between the router and the receiver. Also, check if anyone on the network is downloading torrents or large files, which could be clogging up the bandwidth.
If the connection keeps dropping, try forgetting the Wi-Fi network on your phone and reconnecting. Sometimes resetting the network settings on the phone itself helps. Samsung A20To do this, go to Settings → General Settings → Reset → Reset Network SettingsThis won't delete your personal data, but it will reset your Wi-Fi passwords and Bluetooth settings.
In rare cases, the problem lies with antivirus software or a firewall installed on your smartphone. These can block outgoing connections for local devices. Try temporarily disabling the protection and testing the stream.
Why doesn't the TV detect the Samsung A20 phone?
Most often, the devices are on different subnets or client isolation is enabled on the router. Also, check that the network's SSID isn't hidden. Make sure Screen Mirroring is enabled on the TV.
Is it possible to broadcast a screen without the internet?
Yes, if you use Miracast (Wi-Fi Direct) technology. In this case, the phone connects directly to the TV, creating its own network. However, online services (like YouTube) still require internet access.
Does broadcasting affect mobile internet speed?
No, not if both devices are connected to the same Wi-Fi router. Traffic flows within the local network. If the phone is distributing internet through a hotspot, the mobile connection speed will drop.
How do I turn off the broadcast?
The easiest way is to tap the Smart View icon in the notification shade and select "Disconnect." You can also turn off the TV or disconnect in the Bluetooth/Wi-Fi Direct menu.
Does the Samsung A20 support audio streaming to external speakers when streaming?
Yes, the audio is transmitted along with the video stream to the TV. If the TV is connected to a sound system via optical output or HDMI ARC, the audio will play through them.