hello my friends . i have some questions about mobile programming . 1 - symbianos 3rd editions ( 3 and 5 ) are only for nokia phones ? ( e.g. do sonyericsson vivaz support this os ? or just nokia phones ? ) 2 - bada is just for samsung phones ? what's the difference between java and bada ? and which phones support bada ? 3 - what is the format ( file extensions ) of bada games and applications and themes ? i think it's : .jar 4 - what is UIQ ?