A personal computer to carry in a pocket.

"The data revenue for American cellular carriers grew at an annual rate of more than 70 percent in the first half of last year. In the third quarter, Verizon Wireless, Cingular and Sprint each crossed $1 billion a quarter in data revenue for the first time. They were ranked fourth, fifth and seventh in the world in data revenue for the first nine months of the year... 'We’ve basically caught up with Europe,' said Roger Entner, a telecommunications industry analyst with Ovum Research."