Sim card and Unlocked iPhone Question

Discussion in 'Jailbreaks and iOS Hacks' started by CKohkah, Jul 15, 2009.

  1. CKohkah macrumors 6502

    Jan 10, 2008
    This may be a stupid question, but here goes...

    I have a legit locked iPhone 3GS with AT&T. I also have my old iPhone 3G that I have jailbroken and unlocked.

    I'm going to a concert tonight and wanted to use my old unlocked iPhone with the SIM card that is in my 3GS. All is working fine, but I was just wondering if any jailbreak/Unlock data will save on my SIM card from my 3GS.

    As far as I know this wont happen because I don't think the iPhone writes to the SIM, but i wanted to make sure.

  2. Mystikal macrumors 68020


    Oct 4, 2007
    Irvine, CA
  3. ldobson macrumors regular

    Jun 19, 2009
    No, nothing is written to the sim other than address book entries and thats only if you manually copy it to the sim, the lock mechanism is part of the phone, and only libraries on the phone get patched.

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