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.
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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.