Projectors have no requirements for mobile phones. According to relevant public information, smart phones now generally have a screen projection function. When projecting the screen, it is necessary to ensure that the mobile phone and the projector are in the same LAN. Only in the same local area network can the content in the mobile phone be projected on the projector. Open the phone and click on the content you want to play, and the word TV will appear in the upper right corner of the screen. Click on the TV and it will appear. The projector that wants to project the screen can click Connect.