T-Mobile revving up Chicago mobile network

November 4, 2010 4:57:42 AM PDT
T-Mobile says it's speeding up its mobile network in Chicago.

The company is expanding a 4G network to six new metropolitan areas, including Chicago. It will be running by the end of the year.

The expansion comes as T-Mobile launches a 4G version of the MyTouch handheld device and its first 4G netbook.