Fierce Wireless: "T-Mobile USA appears to be taking aim at its larger rivals on the 4G playground. The company has expanded its HSPA+ network in the Northeastern United States--and is now promoting the technology as providing "4G" speeds. By designating HSPA+ as a 4G technology, T-Mobile has caused some friction with its competitors, namely AT&T, which is also deploying HSPA+ throughout its network as a stepping stone to its 2011 deployment of LTE.
But AT&T is not happy with T-Mobile's designation of HSPA+ as a 4G technology."
