How to Connect Your Smartphone to a TV Using a USB-C to HDMI Adapter First, confirm that your smartphone supports HDMI Alt Mode. If your smartphone has a USB-C port, it probably does, which is ...
a DVI-to-HDMI adapter cable is used to connect the video. The audio must be cabled separately as DVI transfers only video. The HDMI circuit detects the DVI signals and switches to the DVI protocol.