Can you use Samsung Instinct Phone (Sprint Nextel) with boost mobile sim card and if not what cell phones are good to use with boost mobile sim card.. and plz suggest those phones that are good looking--I mean sleek it is for my friend--for her birthday.she wanted soni ericsson but dat is impossible---can you plz tell me wut i should get her and a phone that she would like....one besides the motorola--she does not like those...