So this just happened about an hour ago (earlier this morning I was roaming). I'm both indoors and bit far from the tower but can test later this afternoon from an outdoor location and hopefully get LTE then (since I'm a noob, if I should use something other than signalcheck pro, please let me know). I know there are several cell towers closer to I-90 and so I don't know if sprint has any closer to the interstate, or simply hasn't switched those on yet...