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Discuss 3GS Carrier Identifcation Issue at the Redsn0w -; I have a 3GS 32GB on 4.1 with baseband 06.15 & model MB718LL. Everything I ...
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    Unhappy 3GS Carrier Identifcation Issue

    I have a 3GS 32GB on 4.1 with baseband 06.15 & model MB718LL. Everything I read says this is originally a US based phone locked to ATT. From a clean restore to 4.1, I tried to activate with a friends active ATT sim from his iphone & got the message in itunes that the SIM card was not valid. I then tried the redsnow/ultrasnow/SAM method following all instructions to the T & used US based ATT as my bundle & received the same message. If I can't activate with an actual ATT SIM card in itunes from a clean 4.1, then my assumption is the phone must be locked to a different carrier. Can anyone point me in the right direction for finding out what carrier it is?

    Thank you so much in advance for any help you can give!


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    Super Moderator Array Olethros's Avatar

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    Quote Originally Posted by cmlynch10 View Post
    Normally this means AT&T - I've never seen LL used for any other region that the USA.

    Try with a deactivated AT&T sim card, preferably one that came from an old iPhone.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner

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