BELLEVUE, Wash.--(BUSINESS WIRE)--The Un-carrier is picking up speed. T-Mobile (NASDAQ: TMUS) today announced it achieved the world’s first six-carrier aggregation call using sub-6 GHz spectrum on its live production 5G network. Working with Ericsson and Qualcomm Technologies, Inc., the Un-carrier reached mind-blowing speeds above 3.6 Gbps in the test – fast enough to download a two-hour HD movie in less than 7 seconds! “We are pushing the boundaries of wireless technology to offer our customers the best ex ...