If your phone supports the projection function and the monitor\/projector\/TV is an HDMI interface, it is very well connected, with a type-c to HDMI cable or a green type-c docking connection. For example: Huawei meta10\/10 Rro, mate20\/20Pro\/20x, Huawei P20\/20Pro\/ Honor NOte10, Nut R, Samsung S8\/S8 \/s9\/s9 and so on.
If it is an ordinary ordinary Android smartphone and iPhone, you can match the HDMI cable or vga cable according to the display interface, and then connect the multi-function converter of the green mobile phone to the TV.