Hello!
I found an iphone3gs in the zoo a few days back. Belongs to a tourist I think. But no one called back, so I decide to keep it :)
Anyway, I did a factory restore to wipe out EVERYTHING but when it finally rebooted, it says "The Simcard does not seem to be supported".
Is there anyway to activate it? I searched online and it says I can activate it by jailbreaking. I tried but I was stuck in the middle when it said "this is a 1st Gen model/product" or something.
Since you openly admitted that you found the phone and choose to keep it, this forum does not condone such acts and will not help.
I do have to say that certain carriers aboard are carrier specific and carrier locked.