Recently switched from Verizon's Apple IPhone 5 to Sprint's Apple IPhone 5, and was very surprised to see that Sprint already has 4G LTE in Zip Code 60102 in the U.S.A. considering the fact that I am about 50 Miles NW of Chicago City Limits. Lots of people are complaining (on Sprint's Forums) that they do not yet have 4G LTE with their IPhone 5's and that the Backwards Compatible 3G on their IPhone 5's are not working as well.