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Unlock iPhone 4?

This is a discussion on Unlock iPhone 4? within the iPhone Unlocking forums, part of the iPhone Jailbreaking category; I have no idea if I can use my iPhone in the US. I live in Taiwan and bought the phone there. I'm going to ...

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  1. #1
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    Unhappy Unlock iPhone 4?

    I have no idea if I can use my iPhone in the US.
    I live in Taiwan and bought the phone there. I'm going to stay in US for a while and I bought a pre-paid sim card for myself. It starts for one month the second I put it in my phone, so I can't test it beforehand. Can anyone teach me how to find out if a iPhone is unlocked or not? I guess it probably isn't, so how can I unlock it?

    Thanks,
    kelden

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  3. #2
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    Tell us what you're baseband is. Settings>General>About>Modem Firmware
    White iPhone5(CDMA) - iOS 6.1.2 - Jailbroken with Evasi0n 1.5
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    Have a jailbreaking/unlocking question? Ask me
    Forum Rules Here(PLEASE READ!) iPhoneForums staff

  4. #3
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    Quote Originally Posted by Jmills87 View Post
    Tell us what you're baseband is. Settings>General>About>Modem Firmware
    It says Modern Firmware if thats the same thing. Its 04.12.01.
    Thanks in advance!

  5. #4
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    That cannot be unlocked. You might want to call you provider and ask about a carrier unlock

  6. #5
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    sir,
    i want to unlock my iphone 4 locked with 3 uk .
    kindly let me know the process to unlock it......

  7. #6
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    Quote Originally Posted by jayleen
    sir,
    i want to unlock my iphone 4 locked with 3 uk .
    kindly let me know the process to unlock it......
    As i said, there is no way to unlock that baseband. Call 3 and ask for an imei unlock. If they dont do that, you cannot use your phone on a different carrier.

  8. #7
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    Thank you for answering my question.
    I guess I won't be able to use my phone in the US then.


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