Sprint currently only offers its 4G services in Baltimore, but that’s going to change this month when it rolls out the wicked fast service in Portland, Atlanta and Las Vegas. To harness the power of the new network, Sprint announced two new 4G routers today, the Sprint Personal Hotspot PHS300S and Cradlepoint MBR-1000. (There’s also the 3G/4G USB Modem U300.)