So...I pay for 4G and Sprint has not yet released it in Miami. I am at the bank today and waiting in line. I turn on my 4G and WHAMMMMMMO. Full bars. So I say no way. I run the speedtest and it is 3 mb download....I was happy as hell and it is BLAZING FAST on the browser. Yet I leave my neighborhood and the entire rest of the day 3G and never once picked up 4G. Must be a testing area.