It's hard to imagine modern leisure time without the multimedia capabilities offered by home appliances. Often, you want to view content available on a small portable device's screen on a larger, high-definition display. Wireless technologies make this easy, turning your smart TV into a powerful entertainment center without unnecessary wires.
The process of transmitting a video stream or mirroring the screen depends on the tablet's operating system and the functionality of the TV itself. There are several main protocols, such as Miracast, DLNA And AirPlay, each with its own setup and data transmission features. Understanding their operating principles will help avoid image lag and audio desynchronization.
In this guide, we'll cover all current connection methods in detail, from built-in operating system features to third-party apps. You'll learn how to set up a stable connection, which router settings affect image quality, and what to do if devices can't see each other on the network.
Wireless transmission technologies: Miracast, DLNA and AirPlay
Before we get started, it's important to understand the underlying technologies that enable broadcasting. Miracast — is a wireless media streaming standard that allows you to mirror your device's screen to your TV in real time. This solution is ideal for presentations, gaming, or web browsing, as everything that's happening on your tablet is displayed on the larger screen.
Unlike mirroring, the technology DLNA (Digital Living Network Alliance) works differently. It's designed to stream media content (video files, photos, music) from a tablet to a TV. In this case, the tablet acts as a controller, and the TV plays the file directly from the network, reducing the strain on the mobile device's battery.
⚠️ Note: The DLNA protocol does not support direct audio streaming from system apps (such as YouTube or Netflix). It only works with local files or streaming services that have built-in support for DLNA renderers.
Apple device owners use the ecosystem AirPlay, which ensures high stability and transmission quality. For Android devices, the term Smart View or "Cast," which combines support for Miracast and Google's proprietary protocols. The method you choose depends on what you want to show on the screen.
What is the difference between casting and mirroring?
Screen Mirroring mirrors the tablet's entire screen, including notifications and system sounds. Casting sends only media content (the video stream) to the TV, allowing you to use the tablet as a remote control or for other tasks while the video plays on the TV.
Equipment preparation and network requirements
The quality of wireless streaming directly depends on the local network. For stable operation without lag or buffering, it's highly recommended that both the tablet and TV be connected to the same access point. Using a guest network or different frequency bands (2.4 GHz vs. 5 GHz) can result in the devices simply not detecting each other.
The optimal option is to connect both devices to the range 5 GHzThis frequency provides higher throughput, which is critical for transmitting 4K or HDR video. If your router supports the standard Wi-Fi 6 (802.11ax), this will significantly improve the stability of the connection when there are many other connected gadgets.
It's also worth checking for software updates. TV manufacturers regularly release patches that improve compatibility with new versions of Android and iOS. Go to Settings → Support → Software Update on the TV to make sure the firmware is up to date.
☑️ Checking connection readiness
Streaming from an Android tablet to a Smart TV
The Android operating system makes the setup process incredibly simple thanks to the integration of the Google Cast protocol. First, make sure the signal reception function is enabled on your TV. On Samsung models, it's called Smart View, on LG — Screen Share, and on Sony or Philips it may be called simply “Mircaste” or “Screen mirroring”.
On your tablet, pull down the notification shade and look for the "Cast," "Smart View," or "Projection" icon. After scanning the network, you'll see a list of available devices. Select your TV from the list. If confirmation is required, a confirmation prompt will appear on the TV screen, which you'll need to accept with your remote.
| Brand TV | Function name on TV | Action on the tablet |
|---|---|---|
| Samsung | Screen Mirroring / Smart View | Smart View in the curtain |
| LG (WebOS) | Screen Share | Broadcast / Cast |
| Sony / Philips | Screen mirroring | Broadcast |
| Xiaomi / Mi | Miracast | Wireless monitor |
If you can't connect using standard means, you can use the application Google HomeIt allows you to cast the screen of any Android tablet to Chromecast-enabled TVs. Tap the device's name in the app and select "Cast Screen."
Using AirPlay for Apple iPad devices
Apple ecosystem users are the luckiest of all: technology AirPlay 2 It's built directly into the system interface and doesn't require any additional software. The only requirement is a TV with AirPlay support (many modern Samsung, LG, Sony, and Vizio models) or an Apple TV set-top box.
To start casting, open Control Center on your iPad (swipe down from the upper-right corner or up from the bottom, depending on your model). Tap the "Screen Mirroring" icon (two rectangles). Select your TV from the list. If a code appears on the TV screen, enter it on your tablet to pair.
⚠️ Important: When using AirPlay, make sure that the screen saver mode is disabled on your TV, otherwise the TV may go into sleep mode and lose the connection while you are watching.
AirPlay not only allows you to mirror your screen but also display video from individual apps. For example, after playing a video in Safari or VLC Player, you can click the AirPlay icon directly in the player. This often provides better image quality than fully mirroring your desktop.
Third-party applications and DLNA players
If built-in methods don't work or the functionality isn't sufficient, third-party solutions come to the rescue. Player apps such as VLC for Android or nPlayer, have built-in DLNA and Chromecast support. This is the perfect way to watch a movie downloaded to your tablet on the big screen.
In the interface of such apps, find the streaming icon (usually a rectangle with waves) and select the renderer (your TV). The player will automatically find the file on the network and send the data stream to the TV. This relieves the load on the tablet's processor, as the TV handles the decoding.
For advanced users, there is the option of installing server applications on a PC or NAS that aggregate content and make it available to all devices on the network via the protocol UPnP/DLNAThis allows you to create a unified media library accessible from any gadget in the home.
Example path to DLNA settings in VLC:
Menu (three dots) → Settings → Video → Output → Chromecast built-in
Diagnosing problems and troubleshooting delays
The most common issue with wireless streaming is audio and video desynchronization or intermittent stuttering. This almost always indicates a Wi-Fi bandwidth issue. Try disconnecting other devices consuming bandwidth from the network or moving the router closer to the viewing area.
If there's a picture but no sound, check the audio output settings on your tablet. Sometimes the system defaults to keeping the sound on your mobile device, even if the video is playing on the TV. In this case, you'll need to manually switch the audio output in the volume menu or Bluetooth/connections settings.
⚠️ Note: Menu interfaces and item names may vary depending on the operating system version (Android 11, 12, 13, 14) and the manufacturer's user interface (OneUI, MIUI, ColorOS). If you don't find the item you're looking for, look for a similar option in the "Connections" or "Screen" sections.
If there's no connection at all, try rebooting your router. The DHCP server can often freeze and fail to assign valid IP addresses to new connections, resulting in devices on the same physical network but unable to logically see each other.
Why is the streaming lagging in 4K?
Streaming 4K video requires very high Wi-Fi speed. If your router is old or located far away, try lowering the video quality in the source app (for example, from 4K to 1080p) or use a cable TV connection.
Frequently Asked Questions (FAQ)
Is it possible to broadcast a screen if there is no internet, only a router?
Yes, Miracast and DLNA don't require internet access. The main requirement is for the router to create a local network to which both devices are connected. Some TVs allow you to create a direct Wi-Fi connection (Wi-Fi Direct) without a router.
Why is my TV not visible in the list of available devices?
Check that the devices are connected to the same subnet. Also, make sure "AP Isolation" is disabled on the router, which prevents devices on the Wi-Fi network from communicating with each other.
Does broadcasting affect internet speed?
When using DLNA (file streaming), the internet is not used. When using Miracast/AirPlay (mirroring), the traffic is kept within the local network. However, if you're streaming online video (like YouTube), the internet is used, and speed may drop on other devices.
How do I turn off the broadcast?
The easiest way is to press the "Home" button on your TV remote or select "Disable" in the casting menu on your tablet. You can also simply turn off Wi-Fi on your mobile device.