iPhone Carrier-Locked LTE Bands

Discussion in 'Jailbreaks and iOS Hacks' started by profinite, Dec 15, 2012.

  1. profinite macrumors member

    Joined:
    May 1, 2009
    #1
    First, we have this official information from Apple.

    An Apple store employee has told me that, when I purchase an Apple-unlocked (GSM) iPhone 5, its LTE bands are locked to the carrier whose SIM that I insert into the phone.

    This is a very important question. And, I want to make sure that we have the right information.
    Am I correct to assume that, with an Apple-unlocked iPhone 5, any GSM LTE bands (1,3,4, 5, and 17) can be active as long as an inserted SIM supports them?

    That is:
    [1] Insert an AT&T SIM in the U.S., and LTE bands 4 & 17 are active.
    [2] Insert a Softbank SIM in Japan, and their LTE bands become active.
    [3] Insert a Deutshe Telekom SIM in Germany, and their LTE bands become active.

    Am I correct? :confused:
     
  2. shenan1982 macrumors 68040

    shenan1982

    Joined:
    Nov 23, 2011
    #2
    My understanding is the unlocked version they're selling in the stores are the AT&T models that simply have the lock not applied, thus it's still a US\CAN phone. Obviously they're not selling A1429s or everyone buying them would be unable to use ATT LTE here at home, hehe
     
  3. profinite thread starter macrumors member

    Joined:
    May 1, 2009
    #3
    shenan1982 – That's the core of my question.

    [1] Do A1428 and A1429 GSM have internally identical electronics except that A1428 has only LTE Bands 4 & 17 for AT&T enabled while A1429 GSM has only LTE Bands 1, 3, and 5 enabled?

    Or

    [2] Do A1428 and A1429 GSM have internally different electronics in that A1428 has a circuit that supports only LTE Bands 4 & 17 and A1429 GSM has a different circuit that supports only LTE Bands 1, 3, and 5?
    *

    Am I correct that you are saying [2] is the case?
    I am hoping that [1] is the case because, then, I would wonder if someone can open up LTE Bands 1, 3, and 5 for me.
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    Yes, they have different internal LTE radios.
    You cannot open up or whatever you're talking about radios/LTE bands that dont exist on that hardware.
    Its a hardware limitation, not software.
    That's why they are different models.
     
  5. profinite thread starter macrumors member

    Joined:
    May 1, 2009
    #5
    Applejuiced – Thank you. That's what I was afraid of.

    I have finally located an Apple webpage that has a definitive answer to my question.
    [1] Try to buy an iPhone 5.
    [2] Select color.
    [3] Then, click on "Or Or get iPhone unlocked and contract-free".

    Then, below the row of three different models (sizes), Apple has this statement:

    "The unlocked iPhone only works on supported GSM networks, such as AT&T in the U.S. When you travel internationally, you can also use a nano-SIM card for iPhone 5 from a local GSM carrier. The unlocked iPhone 5 is model A1428. For details on LTE support see www.apple.com/iphone/LTE. The unlocked iPhone will not work with CDMA carriers such as Verizon Wireless or Sprint."
     

Share This Page