This document discusses the history and evolution of mobile phones and personal digital assistants (PDAs) from 1992 to 1996. It notes several important early devices including the Motorola International 3200 phone in 1992, the Nokia 1011 which was the first mass-produced GSM phone, and the IBM Simon personal communicator in 1992, which was the first device to combine PDA and phone functionality. It also mentions the Motorola StarTAC phone in 1996 as the first clamshell cellular phone design.