Do you have an iPhone and wondering if it is factory unlocked? If you either bought a Factory Unlocked or or want to check if the phone is factory unlocked, meaning is native unlocked and it was not unlocked using any third-part unlocking tools like ultraSn0w, there are a couple of way of checking it.

The easiest way of checking is by using this Apple Chart; in there you can look where was the phone purchased and it will tell you if the phone was sold locked to the carrier.

The other way of checking is by restoring the iPhone to the official firmware–without jailbreak- and insert any sim card; if the iPhone is factory unlocked, is should work fine with any Sim Card.