The beginnings of the development of telephones The telephone industry began in the late nineteenth century, when the first telephone was invented by Alexander Graham Bell. The first telephones were primitive, as they relied on wires to transmit sound, and required the two users to be close to each other. The development of technology in the world of telephones Over time, technology began to develop rapidly. Cordless telephones were introduced, and then mobile phones, allowing users to stay in touch anywhere. Today, smartphones are an integral part of everyday life, with advanced features that allow communication and browsing the Internet, which has changed the way people interact with each other.