Modern technologies make it possible to transform any Smart TV into a fully functional wireless display for your computer or laptop. This solution is ideal for presentations, watching movies on a big screen, or even for work when an HDMI cable isn't available. The wireless connection eliminates cable clutter and gives you flexibility in device placement.
However, despite the apparent simplicity, the process image broadcasts has its own technical nuances, depending on your PC's operating system and TV model. There are different data transfer protocols, each providing different latency and image quality. In this article, we'll examine all the current methods so you can choose the best option for your needs.
It is important to understand that connection stability directly depends on the quality of your home network. To transmit 4K images without artifacts, a Wi-Fi speed of at least 100 Mbps in the 5 GHz range is required. If the router is old or located far from the receiver, cursor delays or audio desynchronization may occur.
Selecting a video transmission protocol
Before you begin setup, you need to decide on the technology your devices will use. The market offers several standards, and compatibility between them isn't always complete. Choosing the right method is 90% of the success of the entire operation.
The most common standard for Windows and Android is MiracastThis technology allows for direct video signal transmission between devices without a router (Wi-Fi Direct mode) or via a local network. It is built into most modern TVs from Samsung, LG, Sony, and other brands.
Apple device owners use the protocol AirPlayIt provides high stability and quality, but requires a compatible receiver on the TV. Many new TV models already have built-in AirPlay 2 support, but older models may require an Apple TV set-top box.
- 📺 Miracast is a universal standard for Windows and Android; it doesn't require a router.
- 🍏 AirPlay is a proprietary Apple protocol that requires support from the TV.
- 🌐 DLNA - used for streaming media files, not screen mirroring.
- 💻 ChromeCast is a technology from Google built into the Chrome browser and Android.
⚠️ Note: Miracast and AirPlay operate on different frequency bands. If you experience interference, try switching your router to a less congested channel or using the 5 GHz band to reduce interference.
Setting up Samsung and LG TV (WebOS, Tizen)
TVs from market leaders using operating systems Tizen And WebOS, have a built-in wireless signal reception function. You don't need to install additional applications if you use the standard Windows 10 or 11 tools.
To activate standby mode on Samsung TVs, go to the signal sources menu and select Connecting to a mobile device or Screen ShareOn LG models the path may look like this All Inputs → Connect to a Mobile DeviceThe interface may differ slightly depending on the year of model release.
Once enabled, the TV will begin searching for available devices. Make sure your PC and TV are on the same network unless you're using Wi-Fi Direct. In some cases, you'll need to confirm the connection on the TV screen using the remote.
☑️ Checking the TV's readiness
It's important to note that older Smart TV models may not support the Miracast standard at the hardware level. In this case, the only option is to use external adapters or software solutions, which we'll discuss below.
Using a TV as a Monitor in Windows
Windows 10 and 11 operating systems have a built-in projection feature that makes connection incredibly simple. You don't need third-party software if your computer supports wireless display standards.
To get started, press the key combination Win + K on your keyboard. The "Connection" panel will open on the right, where the system will begin searching for available displays. Select your TV from the list, and in a few seconds, the image will appear on the big screen.
If the system reports that the device is not found, the projection feature may be disabled on your computer. To enable it, go to Settings → System → Project to this PCHere you need to set permission to run the function and, if necessary, add the "Wireless Display" component through the additional components menu.
| Parameter | Description | Recommendation |
|---|---|---|
| Permission | Number of pixels on the screen | Set native (1920x1080 or 4K) |
| Refresh rate | Number of frames per second | 60 Hz for comfortable work |
| Opening hours | Duplication or extension | Expand for work, Duplicate for video |
| Input lag | Cursor response time | Critical for games, not critical for movies |
Once successfully connected, you can select the display mode. Click Win + Pto switch between "Second Screen Only," "Duplicate," or "Extend" modes. Extend mode is most convenient for working, turning the TV into an additional workspace.
What to do if Windows doesn't see the TV?
Make sure the signal receiving app (Screen Share) is open on the TV. Check that your antivirus software or Windows Firewall isn't blocking the local network connection. Also, try restarting the Wi-Fi module on both devices.
Broadcasting from macOS and Apple devices
The Apple ecosystem offers some of the most stable wireless image transfer solutions. Technology AirPlay Allows you to instantly display content from your MacBook or iMac on your TV. The main requirement is that your TV supports AirPlay 2 or has an Apple TV.
On a Mac, open Control Center from the menu bar and select "Screen Mirroring." Your TV will appear in the list of available devices. When you first connect, a four-digit code may appear on the TV screen; enter it on your computer to confirm.
AirPlay streaming quality is generally higher than Miracast due to its efficient video compression. However, if your network is congested, audio may become out of sync. In this case, it might be worth lowering the video quality in the settings or moving the router closer.
- 🍎 Open Control Center on your Mac.
- 📡 Select "Screen Mirroring".
- 📺 Click on the name of your TV in the list.
- 🔢 Enter the verification code if it appears on the screen.
It's worth mentioning that AirPlay not only allows you to mirror your screen, but also display individual application windows or video files directly, bypassing the desktop. This reduces the load on your computer's processor, as the TV handles the decoding itself.
⚠️ Note: When using AirPlay to work with text, fonts may appear less crisp due to stream compression. For reading documents, it's best to use a wired connection or lower the resolution in the settings.
Third-party programs for wireless connection
If the built-in OS tools don't work or your TV is an older generation Smart TV, third-party software can help. These programs create a virtual display adapter and transmit the video stream over the local network.
One of the most popular programs is LetsViewIt's free for personal use and supports both Windows and macOS. You'll need to install the app on both your computer and your TV (via the TV app store), after which the devices will find each other automatically.
Another powerful tool is ApowerMirrorIt offers more settings, including computer control from the TV screen (if the TV supports touch or a mouse is connected) and screen recording. However, the free version has limitations on runtime and quality.
Google Chrome is also worth considering. The built-in "Cast" feature lets you cast a browser tab or the entire desktop to Chromecast-enabled TVs. This is convenient for showing a presentation or online video, but it's not suitable for continuous use as a monitor due to high latency.
Network optimization and latency elimination
Wireless connections are highly dependent on the quality of the radio signal. If you plan to use your TV as your primary monitor for word processing or fast-paced gaming, network stability becomes critical.
The first rule is to use range. 5 GHzThe 2.4 GHz frequency is heavily congested by neighboring routers, microwaves, and Bluetooth devices, causing stuttering and artifacts on the screen. 5 GHz provides a wider channel and less interference.
The router's location also plays a role. There shouldn't be any thick walls, mirrors, or metal structures between the router and the TV that could block the signal. Ideally, the router should be within direct line of sight or in an adjacent room with no obstructions.
If your router supports QoS (Quality of Service), configure traffic priority for your computer or TV. This will reserve some bandwidth specifically for the video stream, even if other devices in the house are actively downloading files.
⚠️ Note: TV menu interfaces and router settings may change with software updates. If you don't find the option described, check the manufacturer's official documentation in the support section for your specific model.
Frequently Asked Questions (FAQ)
Is it possible to play games on TV via WiFi?
Yes, but with some caveats. For static games (strategy, card games), a latency of 50-100 ms isn't critical. However, for shooters and racing games, a wireless connection via Miracast or AirPlay will introduce noticeable lag. For gaming, it's better to use an HDMI cable or stream via GeForce Cloud/Nvidia Shield, which are better optimized.
Why is the image on the TV not full screen?
This is a scaling issue. Go to your TV settings (P.Size or Aspect Ratio button on the remote) and select "Just Scan," "Screen Fit," or "16:9." In Windows, also check the scaling settings in Settings → System → Display.
My mouse cursor is slow when using WiFi. What should I do?
Cursor lag is the main drawback of wireless technologies. Try reducing your PC's screen resolution to 1080p if you're streaming 4K. Make sure your computer is connected to the router via Ethernet, not WiFi, to reduce the amount of bandwidth needed for the video stream.
Do you need internet to connect a TV as a monitor?
No, a global internet connection is not required. Devices connect locally via a router or directly (Wi-Fi Direct). However, network access may be required for initial driver installation or TV firmware updates.