T-Mobile HSPA+ upgrades going on, LTE on horizon

T-Mobile, USA is offering HSPA+ services in almost 50 major metropolitan areas now (claiming 4G speeds) and its first HSPA+ smartphone is planned for this summer (rumored Android device from HTC).<

Sprint faces shortage of HTC EVO 4G

While Sprint is increasing its WiMAX coverage in USA markets it appears that it has challenges to keep up with the sales of its first 4G HTC EVO handset.