How to know if my iPhone is unlocked?

How do I know if an iphone 4 that I am trying to buy is unlocked?

  • it is been sold to my as factory unlocked, is there a way I can check online or in the apple site? I know it was a method called SAM that let you unlocked the iphone and lock it to a new carrier, in this case Tmobile; the method doesn't work to unlocked new phones any more. In my case I will use it worldwide so I really need it totally unlocked.

  • Answer:

    The only way you could check whether the phone has been unlocked or not would be by putting in any SIM card on it and see if you get any signal. Even if the phone boots in the configuration wizard, by putting in any SIM card you will be able to tell whether you are getting any signal or not. Other ways to check I can think of would be learn how much did the original owner pay for it. Unlocked iPhones (that can only be bought at Apple) cost considerably more than iPhones bought at a carrier's retail store. You would have to check online for the iPhone price range in some carriers and compare it to the price of an unlocked iPhone (which is usually over 500$us). Sadly there's no way to check whether a phone has been unlocked even if you have access to it's IMEI code. Or at least, not that I am aware of.

Andrés Ibañez at Quora Visit the source

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