The first commercial smartphone was introduced in 1996: http://en.wikipedia.org/wiki/Nokia_9000_Communicator
The Ericsson R380 from the year 2000 was the first to look more like a modern smartphone with a full-front touchscreen: http://www.gsmarena.com/ericsson_r380-195.php
We also worked on the Seiko Epson locatio, phone with PDA browser and GPS all in 1998, http://www.knorbury.co.uk/locatio.gif
We also worked on the Seiko Epson locatio, phone with PDA browser and GPS all in 1998, http://www.knorbury.co.uk/locatio.gif