Whether telephone, short message and TV belong to the network. Why?

SMS: It belongs to the network. Because so far all short messages have been sent through network signals.

Telephone: it belongs to network and cable. In the past, telephones were mainly transmitted by wired signals. Now everyone has a mobile phone, and 4G network has gradually become the mainstream. The cable age is slowly being eliminated.

Television: it belongs to network, cable and digital. At present, TV signals are mainly digital signals, and network TV has great potential in the future. Cable TV is at the end of its rope.