Will an Unlocked 3G iPhone work on other 3G networks?

Discussion in 'iPhone' started by citron230, Jun 3, 2008.

  1. citron230 macrumors 6502a

    citron230

    Joined:
    Dec 17, 2007
    Location:
    San Diego, CA
    #1
    This is something I have been thinking about. I am not planning on unlocking an iPhone, but I was wondering? If you can unlock a 3G iPhone, could you use another carriers 3G network, and would all of the features run exactly the same.
    I have had phones in the past, years back that I unlocked, but never could get all of the features to run exactly the way they were meant to.
     
  2. PoitNarf macrumors 65816

    PoitNarf

    Joined:
    May 28, 2007
    Location:
    Northern NJ
    #2
    As long as a 3G iPhone supports the same protocols and frequencies used by another carrier it should be compatible.
     
  3. edesignuk Moderator emeritus

    edesignuk

    Joined:
    Mar 25, 2002
    Location:
    London, England
    #3
    Provided the other "3G" networks are of the same base standard it should work.

    Verizon's 3G and AT&T's 3G are totally different from what I understand. But AT&T and T-Mobile are the same.
     
  4. shinchook macrumors regular

    shinchook

    Joined:
    May 13, 2008
    Location:
    New Jersey
    #4
    You have to make sure the protocols are the same... Also you will be risking the possibility of a bricked iphone as well... Don't know if it is worth it.
     
  5. fishkorp macrumors 68020

    fishkorp

    Joined:
    Apr 10, 2006
    Location:
    Ellicott City, MD
    #5
    That is incorrect. In the US, T-Mobile's new 3G network uses a frequency different from pretty much every other carrier. Their GSM networks play nice, their 3G, not so much.
     
  6. frosse macrumors 6502a

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    Sep 23, 2007
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    Sweden
  7. edesignuk Moderator emeritus

    edesignuk

    Joined:
    Mar 25, 2002
    Location:
    London, England
    #7
    My mistake then, I'm not in the US, from what I had read they used the same standards. :eek:
     
  8. ruinfx macrumors 6502a

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    Feb 20, 2008
  9. zephead macrumors 68000

    zephead

    Joined:
    Apr 27, 2006
    Location:
    in your pants
    #9
    Unless Apple's making country-specific phones (probably not gonna happen with all the countries scheduled to get the iPhone), Apple's gonna have to make the 3G iPhone with tri-band UMTS (850/1900/2100 MHz) or more (900, 1700 MHz, possibly).

    AT&T uses 850/1900 MHz for their 3G, and from what I understand, most European operators use 1900/2100 MHz. T-Mo's going with 1700/2100. I think Japan and/or Australia uses 900MHz, but I'm not entirely sure about that.
     
  10. kleo macrumors regular

    Joined:
    Feb 18, 2008
    #10
    Ya man it works on ALL of them; I mean we are talking about an APPLE product here!!!
     
  11. frosse macrumors 6502a

    Joined:
    Sep 23, 2007
    Location:
    Sweden
    #11
    Would I be able to import a 3G iphone from the US, unlock it and use it with my carrier?

    My carrier in Europe (Telenor) uses the following frequency bands for UMTS/HSDPA according to their site:
    W-CDMA 850/1900/2100


    Which ones do AT&T use for UMTS/HSDPA?


    Are there other things affecting whether or not I will be able to use the phone here in europe?

    Or will the new iphone simply have a lot more bands due to international release?


    Edit: I totally missed zepheads post:
     
  12. ruinfx macrumors 6502a

    Joined:
    Feb 20, 2008
    #12
    its important to note that the 2100 band that t-mobile will be using is not the same as the 2100 that is used in europe. also i think i remember australia using 850.

    if the model sold in the US has triband 3G (850/1900/2100) then you could unlock it and use it on a european network. on the other hand if it is a US only model with (850/1900) then no. we will have to wait and see what apple does.
     
  13. Van Wildonher macrumors 6502a

    Joined:
    Apr 29, 2008
    #13
    I don't think Apple is going to release different phones for different countries.
     

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