Sprint - LTE on unlimited plan
A spokesperson for Sprint has confirmed that Sprint's LTE phones will offer unlimited data service. While AT&T, Verizon and T-Mobile will charge more if you exceed your contracted data amount for the month, Sprint will not charge extra, and won't throttle your data speed.
http://www.techhog.com/sprint-quiet...k-will-be-unlimited-like-their-current-plans/
That's the good news. The bad news is that Sprint is lagging far, far behind its competitors in the introduction of LTE. While Verizon offers LTE in more than 200 metro areas today, and AT&T is up to 31 metro areas today, Sprint has LTE service available in only 6 metro areas today (Atlanta, Baltimore, Dallas, Houston, Kansas City and San Antonio). More are on the way, but it will be the end of 2013 before Sprint LTE is available nationally.
T-Mobile continues to offer fast data access using a technology other than LTE. T-Mobile covers 175 metro areas with its HSPA+ network. Data speeds are a little slower than LTE in most cases, but comparable. HSPA+ is used by AT&T as well, but T-Mobile has implemented a higher speed version (theoretical 42 megabits per second vs AT&T's 14 mbps).