SIM unlock - SIM not supported

Discussion in 'iPhone' started by elifflower, Jun 16, 2016.

  1. elifflower macrumors newbie


    Jun 16, 2016
    Hi there,

    I have recently moved from the UK to USA so I decided to unlock my Three iPhone last week.

    I filled out the unlock form online and received a text a few days later also from Three, directing me on how to unlock my device.

    This directed me to a website called which told me to follow these steps:

    Remove old Three sim and then connect device to complete running iTunes. It then says I will receive an option to update my network settings - I cannot see this option at all.

    It then says upon acceptance of your network settings, you divide will be unlocked from the network,

    As I just mentioned I do not receive the update network settings option any my phone is definitely not unlocked as when I enter my new US T-mobile new sim, I get this message:

    "The sim card you have installed is from a carrier that is not supported under the activation policy that is assigned to the activation server.

    Please insert another sim from a supported carrier or request that this phone be unlocked by your carrier"

    I called three today and she simply told me my phone IS now unlocked and to follow the steps above and also try the whole restore to factory settings, install new sim and then restore from iTunes back up however I cannot even get to the point of the iTunes back up because I get the "Sim card is not supported etc" message so cannot go another further.
    I then called Apple Care who suggested restoring the iPhone and when it came up with "Hello", inserting the new SIM but still I get SIM not supported.

    Also to note my iTunes is up to date.

    Can anyone please shed any light on what I might do next?

    Surely it shouldn't be a problem to use a T-mobile US sim card in a Three (now unlocked apparently) phone should it?

    My boyfriends EE recently unlocked phone allows his T-mobile US sim card just fine!

    Really hope someone can help!


  2. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    I'd call your carrier again.
    They keep telling you it's unlocked but it clearly is not.
    Make sure they have the correct imei number.

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