AT&T (with HSUPA) spearheaded that, T-Mobile followed but was better able to actually argue it as their HSPA+ implementation was faster due to use of DC-HSPA+ (

AT&T (with HSUPA) spearheaded that, T-Mobile followed but was better able to actually argue it as their HSPA+ implementation was faster due to use of DC-HSPA+ (42mbits). ITU relaxed their definition of 4G to allow for "significant upgrades to 3G technology", so blame them for everyone jumping on the bandwagon: https://fcw.com/blogs/mobileplatform/2011/03/att-hspa-4g-problem.aspx https://fcw.com/blogs/mobileplatform/2011/03/att-hspa-4g-pro...