It does not have to be jailbroke just unlocked to allow a non-AT&T SIM to work.
Also, not the original iPhone only supports EDGE data.
Dave
To unlock you must jailbreak.
Not necessarily true in the UK or most of the rest of Europe. Networks can and will unlock them, usually for a fee. Different networks have different criteria.
Not necessarily true in the UK or most of the rest of Europe. Networks can and will unlock them, usually for a fee. Different networks have different criteria.