History of mobile phones
A cellular telephone switching plan was described by Fluhr and Nussbaum in 1973, and a cellular telephone data signaling system was described in 1977 by Hachenburg et al.
Telephone booth
William Gray is credited with inventing the coin payphone in the United States in 1889, and George A. Long was its developer. The first telephone booth in London, England, was probably installed near the Staple Inn in High Holborn in May 1903.