SACRAMENTO, Calif.--(BUSINESS WIRE)--On the heels of recent LTE upgrades across the U.S., T-Mobile (NYSE: TMUS) today announced that the greater Sacramento, CA area joins the other markets in California to get up to a 50% increase in LTE mobile speeds from a Wideband LTE upgrade. In addition to the Sacramento area, T-Mobile LTE customers in Placer, Sacramento, Yolo, San Joaquin, and Stanislaus counties are also experiencing super-fast download speeds, making access to their favorite mobile cont