why do u want to cancel with sprint? i have great service in the okc area and the data sppeds are much faster than the at&t edge network. u should check out the new samsung instinct that sprint is coming out with on june 20th at nowisgood.com they have some good videos comparing to the iphone. the iphone on 3g will only run top speeds of 144kb when the sprint phone on average is running between 400-700 with top speeds over a meg