Bought the iPhone 3gs and it was sealed. No cydia app installed. Any sum works. How can I check if this is factory unlocked? Or it sure is since I can use any sim without the cydia app? Thanks no access to itunes yet since I am out of the country now.
Again, if it is sealed, then that means that it hasn't been touched by anybody outside the Apple factory. Meaning that if any SIM card works in it, it is factory unlocked.
If it is not-sealed, and they claim it's factory unlocked, but there's no Cydia, they might have just "poofed" it. So if it was not-sealed, then the only way to check is through iTunes. Restore it. If any SIM card works, it's factory unlocked. If only the provider of that country works, then it's locked, and it wasn't factory unlocked.