While the United States has generally lagged Europe in adopting prepaid mobile wireless strategies, a Dallas-based technology shop called Quamtel is seeking to quietly redefine the retail market with new “no contract” prepaid USB modems and tablets. Formerly known as Atomic Guppy, the company resurfaced in 2009 as Quamtel under the leadership of a new team currently … [Read more...] about Battle lines drawn in U.S. prepaid mobile wireless market