Does the model number of an iPhone 4S determines its unlock status?

Discussion in 'iPhone' started by apollo1444, Dec 27, 2011.

  1. apollo1444 macrumors 65816

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    mexico
    #1
    pretty much tittle thread...

    does anyone know if the model number of the iPhone 4S determines weather or not the device is locked to a carrier or if this one is unlocked?
     
  2. saving107 macrumors 603

    saving107

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    San Jose, Ca
  3. apollo1444 thread starter macrumors 65816

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    mexico
    #3
    I don't live in the USA, I bought it in Mexico for full price on a regular store don't know if its unlocked like USA full priced ones... thats what I'm trying to find out...
     
  4. eastercat macrumors 68040

    eastercat

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    #4
    If you bought it from the apple store, it's more likely to be unlocked. Have you opened it? Usually, an unlocked phone will have a pop up message in itunes when plugged in.
     
  5. Beenblacklisted macrumors 6502

    Beenblacklisted

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    Dec 28, 2011
    Location:
    Miami,Fl
    #5
    Yes model number does determine its status.

    Part numbers starting with MC..are carrier included
    PArt number starting with MD...are factory unlocked.
     
  6. la79 macrumors regular

    la79

    Joined:
    Dec 27, 2011
    #6
    To the original OP, the answer is yes and no. If you purchased your Iphone 4 or 4S from Apple "Device Only" then then your phone will be unlocked forever.

    I purchased an AT&T Iphone 4S and it was unlocked when I paid for it full price without a contract.

    In the U.S. if you go to a cellular carrier and purchase your phone it will be locked even if you pay full price. Only Apple was unlocking them when purchased "Device Only."

    I do not what the story is in other countries. They go on a case by case basis.
     
  7. scaredpoet macrumors 604

    scaredpoet

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    Apr 6, 2007
    #7
    I'm not so sure about that. Mine has a part number of MD271LL, and I bought it on-contract with AT&T.
     
  8. takeshi74 macrumors 601

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    Feb 9, 2011
    #8
    ...and you can't get a hold of a SIM to test?
     
  9. iPhone Warrior macrumors member

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    May 10, 2011
    #9
    The model number doesn't really refer to a locked or unlocked phone. You can buy an iPhone locked and then the carrier may offer an unlocking policy.
     
  10. yrchern macrumors member

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    Jun 14, 2007
    #10
    No, a factory unlocked iPhone won't have this message. You get this message only if the model is locked and Apple unlocked it for you. Either by paying full price or the request of the carrier.

    Not totally true. You can know if an iPhone is factory unlocked by its model number. However, an iPhone with a specific carrier model number may be locked or unlocked.
     
  11. Beenblacklisted macrumors 6502

    Beenblacklisted

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    Dec 28, 2011
    Location:
    Miami,Fl
    #11
    correction to earlier post

    USA FACTORY UNLK
    MD234LL/A-16blk
    MD237LL/A-16w

    MD241LL/A-32blk
    MD244LL/a-32w

    MD2257LL/a-64blk
    MD260LL/a-64w

    AT&T
    MC918../.-16b
    MC920../.-16w

    MC919../.-32b
    MC921../.-32w

    MD-269../.-64b
    MD-271../.-64w

    Verizon
    MD-276../.-16b
    MD-277../.-16w

    MD-278../.-32b
    MD-279../.-32w

    MD-280../.-64
    MD-281../.-64w

    Sprint

    MD-377../.-16b
    MD-378../.-16w

    MD-379../.-32b
    MD-380../.-32w

    MD-381../.-64b
    MD-382../.-64w

    Clarification the ../. LL/A- refers to Country code(LL)
    C/A- canada
    LL/A-USA
    ZA/A-Singapore
    ZP/A-Hong Kong
     
  12. Hexiii macrumors 65816

    Hexiii

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    #12
    What about iPhone 3GS? I've bought a used one and it says I have a wrong SIM.
     
  13. yrchern macrumors member

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    Jun 14, 2007
    #13
    Then it's locked.
     
  14. Hexiii, Dec 28, 2011
    Last edited: Dec 28, 2011

    Hexiii macrumors 65816

    Hexiii

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    Location:
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    #14
    Well, but it wasn't before. It was jailbroken and after I installed the iOS5, there were some problems. But I need to be 100% sure. Where can I find the parts number?

    /e Well, seems like I can't find the number without the box...
     
  15. wordoflife macrumors 604

    wordoflife

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    Jul 6, 2009
    #15
    Thx for the list. Just curious if there were any more models because i have a mc923 and it's an at&t 32gb black.
     
  16. yrchern macrumors member

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    Jun 14, 2007
    #16
    My guess is it may be software unlocked using redsn0w, not officially unlocked. You lost the unlock after upgrading to iOS5. The part number is on the back of your iPhone.
     
  17. Hexiii macrumors 65816

    Hexiii

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    Jun 30, 2011
    Location:
    Prague, Czech Republic
    #17
    Is it? My 4S has it only on the package. Well, unfortunately I don't have the box of the 3GS.

    Can I find out if it was factory unlocked from Model/serial/IMEI number?
     
  18. yrchern macrumors member

    Joined:
    Jun 14, 2007
    #18
    It looks like ATT versions have different model numbers at the beginning (October), you can check http://forums.macrumors.com/showthread.php?t=1254114&page=2 .
     
  19. Applejuiced macrumors Westmere

    Applejuiced

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    Location:
    At the iPhone hacks section.
    #19
    Exactly.
    It was JB and unlocked using a hack from cydia.
    Not factory unlocked.
     
  20. apollo1444, Dec 29, 2011
    Last edited: Dec 29, 2011

    apollo1444 thread starter macrumors 65816

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    Jul 22, 2011
    Location:
    mexico
    #20
    sorry but that is not true I have a 32GB old iPhone 4 and it starts with MC and I bought it on the online apple store and it is factory unlocked...


    this 4S I have I didn't bought it at apple.com.mx nor a carrier store... just a regular store... however if I type my model number on google... which is MD244E/A I'm going to get the mexican apple store link that says it's a white 32gb model and its factory unlocked... I would also get chinesse sites that say this is a mexican model

    the thing I do not know is if its unlocked or not... haven't seen subsidised ones models yet
     
  21. dontwalkhand macrumors 601

    dontwalkhand

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    Jul 5, 2007
    Location:
    Phoenix, AZ
    #21
    You're right, my factory unlocked iPhone 4 is MD :), I never knew that before, thanks for the tip!
     
  22. apollo1444 thread starter macrumors 65816

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    Jul 22, 2011
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    mexico
    #22
    I just said that is not true didn't you read?... I had an MC iPhone 4 one that is factory unlocked.
     
  23. KKSigs macrumors member

    Joined:
    Jul 1, 2010
    #23
    I had to get my fully unlocked blk 64 gb iPhone 4s replaced by Genius Bar. Replacement unit for this size is MD270LL They told me basic it not a refurb but all there service units now have designated model number
     
  24. terraphantm macrumors 68040

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    Jun 27, 2009
    Location:
    Pennsylvania
    #24
    Lock status and model number can be correlated, but it's not a sure-fire way of checking. Warranty replacements often have different part numbers. The activation status is transferred from the old phone to the new one -regardless of the model number. This is why we sometimes get oddball things like a UK model phone locked to AT&T (once apple allowed iPhones to be serviced internationally)

    FWIW, I had my 4S replaced at the Genius bar. Original model was an AT&T locked 64GB black (MD269LL). The replacement phone is an MD257LL, but it's still locked to AT&T, despite having an unlocked part number (I actually did try a t-mobile SIM).
     

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