There are a few ways to check whether or not your iPhone is unlocked. For those out of the loop, if your iPhone is unlocked, this means that it is able to be used with most carriers around the world. If your iPhone is “locked” this means that you can only use it with the original carrier it was intended for.
Typically, a locked phone means that you’re still making payments with the carrier, or an iPhone purchased from a carrier as opposed to one purchased directly from Apple.
more…