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Discuss Jailbreaking an Unlocked iPhone 4 at the iOS 4.x (iPhone OS 4.x) -; Hi everyone, I am new to this forum and to the iPhone world and I ...
  1. #1
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    Default Jailbreaking an Unlocked iPhone 4

    Hi everyone,

    I am new to this forum and to the iPhone world and I hope you can help me.
    I have recently bought an unlocked iPhone in the USA from an Apple Store and I am thinking about jailbreaking it.

    My iPhone specs:

    16 GB
    Version 4.3.3 (8J2)
    Modem Firmware 04.10.01

    At the moment I am using a pay-as-you-go (therefore, no contract) AT&T micro-sim card.
    I have read some guides and different posts on the forum but I still haven't found the answers I am looking for.
    So, from what I have read till now I have understood that:

    -Jailbreaking allows the user to install cracked applications and unlock "special" iphone features (This is what I am interested to)

    -Unlocking allows the user to use whatever micro-sim card worldwide, but to unlock an iphone it is necessary to jailbreak it first (This is not my case since mine is already unlocked)

    Please correct me if I am wrong.

    I have found this nice tutorial:

    Jailbreak factory unlocked iPhone 4 GSM iOS 4.3.3 with Redsn0w 0.9.6rc16 [Tutorial] | Love For Tech

    and I have already downloaded all the necessary files (redsnow and the firmware), but I am still doubtful of what might happen during and after the jailbreak procedure:

    1. Do I need to remove the micro-sim card during the jailbreak?

    2. Will my iphone still be unlocked after jailbreaking it(Will I still be able to use any micro-sim card)?

    3. (I am writing this question not knowing the answer to the previous one) If my iPhone should get locked after the procedure, would I be able to restore its "unlocked" feature using a back up via iTunes?

    4. In case of a new iOS update can I update my jailbroken iPhone straight away?

    If you know any guides with all the answers please post them and obviously if you have any piece of advice, please let me know.

    Thank You.


  2. #2
    Professional Array

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    From what I understand, an unlocked iPhone, especially factory unlocked like the ones they sell at apple now, remain unlocked especially because they are programmed to be that way. Apple unlocks iPhones by looking at the serial number/imei when you plug it into iTunes, and matching them with a white-list from apple's servers. If your phone and the server's list match up when you plug it into iTunes(btw, you need internet access for this), your phone remains unlockable. They are unlocked remotely that way, and once they are on a white-list in apple's server, they remain forever that way(haven't heard of any instances in which a white-listed iPhone became a black-listed iPhone, black-listed meaning they were locked to at&t again). So to answer your second question, yes, it will be unlocked because those types of unlocks are permanent.

    As for your other questions...

    1)No, you can leave the micro-sim inside of the phone. From my understanding(I've done this quite a few times myself) there were a few instances in which you had to remove the sim but that was a long long time ago if anything. Jailbreaking has advanced in leaps and bounds since those times.

    3)You should always be able to unlock the phone through iTunes. I've never ran across a time where a factory-unlocked iPhone(unlocked iPhones purchased straight from the apple store) locked itself to a carrier after a jailbreaking procedure. What you may have heard is from different stories regarding previously locked iPhones restored to factory software. But since your iPhone is a factory unlocked iPhone, none of those should apply.

    4)Yes you can. However, the availability of a jailbreak is what you would base your decision to update your iOS software on. At points in time, there are exploits which can be used to jailbreak and enhance the end-user's(that would be you) iPhone experience. However, with new updates, those exploits become closed, hence the cat-and-mouse game between the dev team and the almighty Apple Inc. Now, if you want your phone to be forever jailbreakable, I always strongly recommend a good use of tinyumbrella when you get your phone(don't even think about doing it, just do it) because once new updates are released, updates meaning new software, and for whatever the reason would be your phone crashes and the only way to get it working is to restore it, provided you know how, you can restore back to that same software you were on and rejailbreak your phone. If you don't do this, and the iPhone becomes permanently unjailbreakable(it is possible) you would have lost the ability to restore back to the same software that you had originally because apple only legitimately allows you to restore to the newest iPhone software, which may not be in your interest depending on what they do.

    I hope this helps!!!!

  3. #3
    Super Moderator Array Olethros's Avatar

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    We don't endorse or allow piracy here. If you want to jailbreak to avoid paying for applications (cracked apps) then your are not going to get any help here. If you ask for assistance with an illegal topic again - you will be banned.
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