T-Mobile USA, Inc. and Research In Motion (RIM) (NASDAQ: RIMM) announced the most affordable BlackBerry smartphone on T-Mobile's nationwide network - the BlackBerry Curve 9315. Powered by the BlackBerry 7.1 operating system with 3G connectivity, the sleek new smartphone is easy-to-use and provides tools that enable customers to stay connected to the people and information that matter most."At T-Mobile, our goal is to delight customers. The new BlackBerry Curve 9315 will delight customers with unprecedented value while also allowing them to combine their mobile business and personal use in one great device," said Brad Duea, senior vice president of product management at T-Mobile. "The Curve 9315 is the most affordable BlackBerry smartphone on our nationwide network and provides our customers with a wide variety of productivity and social features to keep them connected and make their mobile lives easier.""We're pleased to work with T-Mobile to bring the BlackBerry Curve 9315 to customers," said Richard Piasentin, managing director for the U.S. at Research In Motion. "The Curve 9315 is designed to make it incredibly easy to stay connected with friends, family and coworkers and will be popular with customers upgrading to a smartphone for the first time, as well as existing Curve customers looking for a step up in speed and functionality."