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I requested AT&T to unlock my iPhone 5 at http://att.com/deviceunlock . I got an email saying that my device may be unlocked.

According to the instructions in AT&T's email, I need to do an iTunes backup and restore to complete the unlock process. I have NOT done this yet.

I bought this T-Mobile SIM and inserted it in my iPhone and T-Mobile shows up in my phone's status bar. I cannot make phone calls because I have not signed up for T-Mobile service and have no intentions to.

So, is my phone unlocked at this point? Is there something else I can look at to confirm this?

Thanks!

  • Can you text and use the T-Mobile network? – Brian Graham Aug 17 '14 at 8:22
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I believe you are unlocked.

I just conducted an experiment for you. I took my T-Mobile SIM card out of my iPad and put it in my locked AT&T iPhone 6. It immediately told me "SIM Not Valid. The SIM card that you currently have installed in this iPhone is from a carrier that is not supported under the activation policy that is currently assigned by the activation server."

That is what you'd get if you were locked. Congrats: It seems they did indeed unlock your iPhone.

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The backup / restore routine was required by older iPhones but I don't believe it is required with newer phones. I was able to to move a 5C and 5s on T-Mobile to AT&T simply by swapping SIMs after T-Mobile unlocked the phones. I may have needed to reset the network settings.

Looks like you are able to do the same thing. Your phone is unlocked.

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