Following its largest expansion of the Sprint Spark tri-band LTE network overlay in 11 markets last month, Sprint has added Baltimore and Philadelphia to the list, with the list of supported devices in the LG G2, the HTC One Max, the Samsung Galaxy Mega, and a new version of the Samsung Galaxy S4 along with mobile hotspots. Sprint Spark is now available in 14 markets and Sprint plans to cover 100 markets by the end of the year. The Spark network enables peak download speeds of 60Mbps, according to Sprint.