i love my 8100 but im about ready to step it up, bacasue i want wi-fi and GPS and all the other fun stuff. Dont think i can afford the bold, so i want an 8820 (bacause 8800 dosent have wi-fi right?) the only problem is i dont think they make 8800's for t mobile. if i found an unlocked one, would i have any problems useing all the featues with t mobile? and how dose it compair to the 8320?