Company Name: SpeedTalk Mobile Host Network: T-Mobile Network GSM/UMTS/HSPA+ Service Supports: 2G, 3G, 4G LTE, 5G 3G WCDMA Bands: 2 / 4 / 5 3G Frequencies 1900, 1700/2100 4G LTE Bands: 2 / 4 / 12 4G LTE Frequencies: 1900, 1700 def, 700a T-Mobile offers WCDMA (UMTS) with HSPA+ 3G voice and data over most of their network, using the 1700 MHz (AWS) and 1900 MHz (PCS) bands. Their 4G LTE network uses bands 4 (AWS) and 12 (Lower 700 MHz). They also offer GSM/EDGE2G service in the 1900 band.