Does carrier file get updated when swapping SIMs?

Discussion in 'iPhone' started by amro, Aug 6, 2010.

  1. amro macrumors 6502

    Jul 7, 2008
    I've got an official unlocked iPhone 4 from the UK. I currently have an Orange SIM in it. When I go back to the states and insert my AT&T SIM, will the carrier file get updated? Does it need to be updated? Do I have to do anything with iTunes? I'm hoping to use my iphone between these two because of my travel.
  2. maturola macrumors 68040


    Oct 29, 2007
    Atlanta, GA
    The carriers file are already on your Phone, its just use the correct one depending on what network (supported of course) it is. The only time you need to reload you carrier file is when they release an update.
  3. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    When you plug your iphone to itunes and click check for update it will let you know if there's a carrier update and ask you to install it.
    If not you dont have to worry about it.

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