What is a telephone? A telephone is an instrument designed for the simultaneous transmission and reception of the human voice. Telephones are inexpensive and simple to operate, and they offer an immediate, personal type of communication. What is internet? The Internet connects computers all around the world through a vast global network. It makes it possible for data to be transferred among two or more computers linked via a network. As a result, the internet makes it easier to send communications via chat, audio, video conferencing, etc.