Cellphones Through History: Motorola DynaTAC, iPhone & More (PHOTOS)BRICK TO CHICIt’s the 40th anniversary of the device 6 billion people can’t live without. See its evolution since 1973.Sean MacaulayUpdated Jul. 11, 2017 11:50PM ET / Published Apr. 03, 2013 4:45AM ET Getty (4); AP (1)