I have this Sprint 3G/4G modem (USB Modem U300) and this Sprint 3G/4G pocket router (Sprint PHS300S - made by Cradlepoint). Anybody want to buy these cheap? Service will cost you $60/mo from Sprint. 4G only works in some cities (such as Chicago), but the modem will step down to 3G automatically or manually.
If you're interested, contact me here. I am happy to guarantee that everything works.