Method 1: Use the built-in screen projection function of the mobile phone to first open the wireless display function of the smart TV, and the system will prompt you to open the wireless display function of the Android phone. The opening method is generally: connection mode → wireless display → Open wireless display, find the TV with miracast open, click to connect and start the screen projection. IPhone users use airplay mirroring to connect to their smart TV. Method 2: Connect through an HDMI cable Connect the HDMI interface of the mobile phone and TV through an HDMI cable to achieve the same screen of the mobile phone and TV. Through the operation of the mobile phone, we can realize the synchronous output content on the TV. This method, even if it is an ordinary TV, as long as it has an HDMI interface, it can achieve synchronous output. Method 3: Through the player, video platforms such as Youku, which are commonly used on mobile terminals, can be directly projected, and when the video is played, the TV can be connected. But this one only plays video.