Sprint told The Verge Monday morning, however they havenít announced it officially on their Newsroom Web page yet, that the wireless carrier has today turned on 4G LTE in parts of San Francisco, New York City, Washington, D.C., and some Florida cities including Tampa, Jacksonville, and Miami. Sprint announced in September of last year that this would happen, however they hadn't gotten to it until now.
According to the carrier, the information has not been posted on the Newsroom yet because the roll-out is a little bit patchy at first and Sprint network users may or may not see reception in some areas of these cities during the initial launch. Sprint hopes to lay down the coverage a little bit thicker in these areas in the future:
Originally Posted by Sprint Spokeswoman
4G LTE comes on many of Appleís newest iOS devices, including the iPhone 5, iPad Mini, and iPad with retina display. 4G LTE offers a theoretical download speed of 100Mb/s; however, realistic 4G LTE speeds come in at around 20-60Mb/s on competing U.S. carriers due to network congestion. Sprint, unfortunately, has a record of being much slower than that, which is disappointing considering that Sprint offers unlimited data.
Sources: The Verge