There is one drawback. Sprint right now isn't offering any LTE service, although we recently told you that the carrier's LTE signal in Atlanta, currently under construction, proved to be the second fastest amongst the four major U.S. operators in a test conducted by a Consumer Reports division. For those who have absolutely no interest in 4G, the map will also show 3G coverage and will even display where Nextel Direct Connect can be used. For Sprint customers who have relied so long on WiMax for 4G service, these are heady times indeed with LTE on the way and some hot new phones available.
source: Sprint via AndroidCentral
The red-ringed dots indicate Sprint's 4G coverage via WiMax (L) while the lack of the dots on the right mean no LTE coverage is up yet