If you want to upgrade to a contract-free prepaid carrier in the U.S., Boost Mobile is one of the best options. It has a wide selection of high-end and affordable smartphones and offers a few deals for devices and plans. The sprint-T-Mobile merger resulted in a major change for the best Boost Mobile deals – the MVNO is now part of Dish Network. In order to compete with competitors` unlimited offerings in the wireless industry, Boost Mobile announced on January 15, 2009 that it would introduce a Monthly Unlimited plan.  The plan was accompanied by a reorientation of the brand towards a wider population than before. . . .