Filed under: iPhoneIt's what we thought until the Wall Street Journal told us we were wrong. It's what USA Today originally reported, although nobody else was ever able to confirm it until now. Nilay Patel at Engadget has unearthed some 2008 filings in a 2007 class-action lawsuit that clarify the matter: the AT&T/Apple deal for exclusive domestic service on the iPhone, which has caused much wailing and gnashing of teeth, was ori