Father of the cellphone is using a Droid. . .
http://phandroid.com/2010/03/11/inventor-of-cell-pho ... »
As he said in that interview, all they were thinking about in the 70s was making a phone call. Cooper became a crotchety old man who only wanted to make phone calls at some point. He carries other phones simply because of the pressure to do so. Even he admits that he makes ALL of his calls on his geezerphone (Jitterbug).