AT&T and T-Mobile

Discussion in 'iPhone Tips, Help and Troubleshooting' started by TG1, Aug 31, 2012.

  1. TG1, Aug 31, 2012
    Last edited: Aug 31, 2012

    TG1 macrumors 6502a

    TG1

    Joined:
    Feb 21, 2011
    #1
    Guys,

    If I buy an AT&T iPhone from ebay or Craigslist, can I use it on T-Mobile? I know they're both GSM carriers but I don't know what is involved in switching (unlocking, etc). Thank you.
     
  2. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
    No.
    If its locked to AT&T it wont work with Tmobile even though they are both GSM.
    You need to get an unlocked iphone or if you buy one that's locked you can then purchase an IMEI unlock after.
     
  3. Marcus72 macrumors member

    Joined:
    Jan 31, 2009
    #3
    Jeff Benjamin tweeted this about unlocking an AT&T phone:

    The folks at @cellular_medic are legit. Instant unlock of my iPhone 4S was completed within a few minutes. http://cellular-medic.com/


    I'm might do this for my mom's iphone4 but I wonder if I can lock again after unlocking.
     
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    No, once its officially unlocked with an IMEI service it will never lock again not matter how many times your restore or update the firmware.
     

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