What Is Miracast? Everything You Need to Know
Broadcasting photos, videos, music and other media from your mobile device or PC to your TV need not be a laborious process, fraught with wires and extra peripherals. Miracast, and Intel's compatible cousin technology WiDi, let you beam whatever is on your device's screen right to a television, and there's a good chance that the devices you already own have this technology built in.
What Is Miracast?
Miracast is a screen-mirroring protocol that lets you broadcast anything from an Android device or recent Intel computer to your TV. Whatever you see on the small screen will appear on the big screen. If everything syncs up properly, there's almost no lag, making it ideal for watching videos or using productivity software, although it's not quite reliable enough to run most games.
Phones and tablets with Android 4.2 Jelly Bean or later have access to Miracast. A related technology called WiDi is essentially the same thing, save that it runs on Windows 8 PCs with Intel CPUs. While not every single Android device or Intel computer has the ability to screen mirror via Miracast or WiDi, the odds are in your favor if your system is about two years old or newer. The Wi-Fi Alliance has an official list of all Miracast source devices.
NOTE: To learn how to use Miracast, see How to Use Miracast and WiDi.
Phones and tablets with Android 4.2 Jelly Bean or later have access to Miracast. A related technology called WiDi is essentially the same thing, save that it runs on Windows 8 PCs with Intel CPUs. While not every single Android device or Intel computer has the ability to screen mirror via Miracast or WiDi, the odds are in your favor if your system is about two years old or newer. The Wi-Fi Alliance has an official list of all Miracast source devices.
NOTE: To learn how to use Miracast, see How to Use Miracast and WiDi.
Which devices use Miracast?
As for receivers, many smart TVs have Miracast functionality built-in. The Roku 3 and Roku Stick support Miracast, as do the Google Nexus Player and a handful of other set-top boxes and streaming sticks. You can find a full list of receivers at the Wi-Fi Alliance website.
Tom's Guide has tested many Miracast receivers, but most are not worth extensive write-ups; they either work well, or they don't. Unlike set-top boxes, Miracast dongles rarely have navigable operating systems or extra features. They are simply receivers that screen-mirror a compatible source device. With that in mind, our top recommendation for a standalone Miracast receiver is the Microsoft Wireless Display Adapter.
Tom's Guide has tested many Miracast receivers, but most are not worth extensive write-ups; they either work well, or they don't. Unlike set-top boxes, Miracast dongles rarely have navigable operating systems or extra features. They are simply receivers that screen-mirror a compatible source device. With that in mind, our top recommendation for a standalone Miracast receiver is the Microsoft Wireless Display Adapter.
MICROSOFT WIRELESS DISPLAY ADAPTER
The Microsoft Wireless Display Adapter could not possibly be simpler: Just plug it into your TV and cast the screen from your Android or Windows 8 device. This gadget performed extremely well with a variety of Android smartphones and tablets as well as Windows PCs. Mirroring video, audio and productivity software was smooth and lag-free, no matter the media. Although the Microsoft Wireless Display Adapter won't appeal to people who want a device with its own operating system, like a Roku or Amazon Fire TV, those who just just want to mirror their screens, plain and simple, should absolutely check it out.
How we tested
We review all the major devices with mirroring capabilities (usually as one part of a larger feature set) and test each by attaching it to a television and connecting (or trying to connect) using a variety of recent and popular smartphones, laptops and tablets. Our tests consist of mirroring videos (both from services like Netflix and a device's internal storage), productivity software, and a video game. The exact videos and programs vary from device to device, since we try to stream what's popular at the time of testing.
Between Miracast sources and receivers, there are thousands of potential device combinations. Add in factors like individual Wi-Fi networks and broadband speeds, and Miracast is, at best, an unpredictable technology. Still, there's a good chance that you already own a device with Miracast capabilities, so if screen mirroring sounds like it could be useful to you, try it out. For other screen-mirroring solutions, including how to broadcast content from Apple devices, check out How to Connect a Phone, Tablet, Mac or PC to Your TV.
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