
Plus the seller probably would less willing to take it back if the phone can not be unlocked anymore from an updated software install. This way if you did get ripped off, at least you can reapply the software unlock and still have a functioning phone. (open cydia-> manage tab ->packages, then check to see if ultrasnow or any other software unlocks are applied.) If so, uninstall and try a foreign SIM to see if it works without the software unlock (of course if you find that a software unlock is applied, you probably have been ripped off) and double check that you just got ripped off. Next time or if anyone else comes across this, you should first check cydia to see if a software unlock has been applied. But any claimed factory unlocked iphone with cydia installed on it would not make me feel very confident about authenticity. The one commenter is right, just because it's jailbroken doesn't mean it's not a real unlock. Unlocked phones can be moved from one network to another, typically by swapping the SIM card inside. While network unlock means that the phone was purchased from a provider/carrier and was then unlocked by them. It was sold to the consumer pre-unlocked and ready to use with the carriers the built-in band's support. Oh boy, too bad I didn't see this before many of these people jumped to conclusions. In short, an unlocked phone is a phone that is not exclusively tied to a single carrier. Factory unlocked means that you purchased it directly from the Company.
