I'm having issues sending an SMS's to a USA number from my UK based 3iPhone 3G (officially unlocked). I've tried all number formats - +1, 001 etc but no luck - all I get is 'Message failed' etc. I can send an SMS to an Irish number +353 with no problems. I am running 3.0 beta 4 - would this cause any issues? Has anyone else had this issue? It seems odd that it's just happening to USA numbers!!! Any ideas!?