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.
John Francis Mitchell
Mitchell became Motorola's chief engineer for its mobile communication products in 1960. Prior to the development of the cell phone, Mitchell and his team of engineers produced and marketed the first transistorized pager and obtained a patent for the concept of portable cell telephony, including small antennae used to help free mobile phone units from car trunks where they were typically installed.