If you dont want a high end handset in your pocket and will be happy with something basic and functional, then Cricket US Samsung JetSet SCH-r550 is just the clamshell for you.
This entry level phone doesnt skimp on features though, so you can expect to have some fun packed in between serious business conversations. Features comprise of :-
2.1 TFT internal display (262k colors and 240 x 320 pixels)
1 TFT external display (65k colors