How can I inlock my US iphone with At&t, so that it can work with a european sim card over in europe? Will it lose any of its data and application capabilities?
Which model of iphone and which firmware? You can use a sim card, that would be the easiest way. There are also software unlocks, but this depends on which iphone you have. You can check the link in my signature.
wow nice way to advertise in your sig, perhaps you should click on the advertise here button at the top of the page if you wish to continue advertising your junk.