my friend give me her iphone 4 but she has sprint and i have at&t can i unlock the iphone to at&t?
Talk to Sprint because they have to unlock it.
No - a Sprint iPhone 4 is a CDMA phone and does not even include the hardware to connect to AT&T's GSM network. Nothing to do with carrier unlocking - that phone is hardware INcompatable with AT&T.
Thanks. I missed that point when I read the original post. I have to slow down with my reading.
is unlocking and jailbreaking the samething?
NO. And under the TOU for this forum, the discussion of jailbreaking cannot be done.
And it's irrelevant in any case. As Michael said, the Sprint-model iPhone 4 does not have the circuitry necessary to connect to a GSM network, whether you jailbreak the iPhone or not.
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