Orange UK dont offer a set international plan so im thinking to pick up a prepay sim & just pay for data use & minimum talk mins. I have already spoken to AT&T but they say they dont offer a prepay micro sim! So whatever happens im gonna have to either buy a sim which is already cut(im sure some people will do this)or have a go doing it myself. My only other option is to take prepaid wifi plan. BT Openzone offer an international voucher which covers a few wifi hotspots Boingo, iBAHN, T-Mobile USA, TeliaSonera HomeRun but I would like advice on how extensive the coverage is with them? Or is there a US company that offers a similar plan that includes them all?