Sprint has announced that it will add more than 100 additional cities to its currently small 4G LTE network, without providing specific dates. New major metro markets will include Boston, Charlotte, Chicago, Indianapolis, Los Angeles, Memphis, Miami, Nashville, New Orleans, New York, Philadelphia, and Washington D.C, with eight of the new 4G markets planned for deployment in Puerto Rico. Currently, Sprint offers 4G LTE service in 19 markets; the additions to bring it to at least 120 markets are planned for “the coming months.”

Notably, rival AT&T plans to reach 100 4G LTE markets by the end of 2012, while Verizon currently has 371 4G LTE markets in its network.