A day after it launched the Samsung Epic 4G, Sprint today grew its WiMAX footprint in three key areas. The 4G-level service is now officially active in Boston, Daytona Beach and Rhode Island's capital Providence. The areas now have the option of unlimited access at the 3-6Mbps downstream speeds estimated for the network. Besides its new smartphones, Sprint is supplying the Overdrive pocket router and its typical USB modem lineup for Macs and PCs.
