I am thinking of buying am iPhone in the U.S. when I go there later this month and I then plan on unlocking it with iJailbreak and using it here in the U.K. I know the U.K. and U.S. iPhone have different ways of formatting numbers when dialing (does this happen in contacts or anything else like that?). If I bought the iPhone in the U.S. and used it here in the U.K., could I change the number formatting to that of the U.K.? If not, it shouldn't be too much of a problem, but if I have to stick with U.S. formatting, will I still be able to make calls properly (without the U.S. formatting messing up when I call someone)? Will the U.S. version being used in the U.K. make any other differences? Thanks!