Generally, when a mobile phone projects a screen on a smart TV, it is required that both the mobile phone and the smart TV are in a two-layer LAN. For example, both the mobile phone and the smart TV are connected to the same Wi-Fi network at home, or the TV can be connected to a wired network, and the mobile phone is connected to the Wi-Fi network, as long as the wires are connected to the same wireless router.

The following is a brief introduction to the following main screen projection protocols:

Play in the air

AirPlay is Apple's wireless display standard. It allows you to project videos from your iPhone, iPad or Mac onto an Apple TV or Android TV box (the TV box needs projection software supporting AirPlay, such as Leto Projection). With AirPlay, you can start videos on iPhone and "push" them to TV, or play games on iPad and mirror them to TV.

IPhone mirror projection screen

Apple's AirPlay standard is flexible enough to work in two different ways. You can mirror the entire device screen (including status bar, menu, etc.) on the TV. You can also use a smarter streaming mode. For example, you can play a video in an application on the iPhone, and then use the playback controls on the iPhone to control the video on the TV. Even if the playback controls are played on the iPhone screen, they will not appear on the TV. You can only stream what you want to see on the display screen, instead of copying the whole mobile phone screen (including status bar, menu, etc. ).

The main limitation of AirPlay is that it only applies to Apple devices. If you have a Mac, iPhone, iPad and Apple TV, you will be satisfied, but now many TV boxes support AirPlay protocol, so it is easy to project a screen on a smart TV with an Apple phone or tablet.

Milla Caster

Miracast is a Wi-Fi projection industry standard formulated by the Wi-Fi Alliance, which is essentially a response to Apple AirPlay. Miracast supports Android 4.2+, Windows 8. 1 and Windows 10. Allow Android smartphones, Windows tablets and laptops and other devices to wirelessly transmit to Miracast-compatible receivers, such as smart TVs and tablets. At present, many TV boxes support Miracast protocol, such as Xiaomi box and Glory box. Xiaomi mobile phone and Huawei mobile phone also support Miracast protocol, and screen projection can be realized with Xiaomi box and glory box.

Compared with AirPlay, Miracast has advantages and disadvantages. Its advantages are as follows:

Built-in Andorid and Windows, don't ask for apple terminal equipment.

Miracast can work well without a wireless router, which means that the mobile phone can directly connect to the TV's Wi-Fi network card through Wi-Fi for screen projection (Wi-Fi Direct technology), which is more convenient without a wireless router.

Disadvantages are:

Only screen mirror mode projection is supported, not stream mode projection. When you project the screen, the whole screen of the mobile phone (including the status bar, etc. ) will be copied to the TV, and the screen of the mobile phone should always be in the state of playing and displaying. Apple's AirPlay allows you to browse the web once on your mobile phone and play the video on your mobile phone once on TV.

Miracast, after all, is an industry standard, and the implementations of various manufacturers are mixed, and there may be a problem of poor experience in screen projection between different devices.

Another problem is that the standard does not require equipment to bear the trademark of "Miracast" brand. Manufacturers call their Miracast implementation something else. For example, LG calls its Miracast support "SmartShare", Samsung calls it "AllShare Cast", Sony calls it "screen mirror" and Panasonic calls it "display mirror".