Will the SIM from my 3G work in the 4?

Discussion in 'iPhone' started by jrm27, Jun 8, 2010.

  1. jrm27 macrumors 6502

    Jan 3, 2008

    So, I've been limping along on my 3G waiting for the 4 to come out. I'm stoked to get a new phone and this should really be a nice upgrade for me.

    Question though... will the sim from my 3g work in the 4? For example, if I pick up my new iphone on the 24th will my phone leave the store ready to go with all the info from my 3G? Or will I need to go home and sync it with itunes before I get all my phone numbers loaded in and such? Thanks!
  2. Zaft macrumors 68040


    Jun 16, 2009
    Brooklyn, NY
    iPhone 4 uses Micro sim which is smaller then the old sim cards. So your old 3g sim will not work. Like you mentioned you just sync your info at home.
  3. iMrNiceGuy0023 macrumors 68000

    Jun 5, 2009
    you will get a new Micro Sim, your old sim will be de activated from your number..

    numbers are saved to the iPhone, backup your old phone, restore onto your new phone
  4. gceo macrumors 6502a


    Jul 13, 2007
    San Diego, CA
    You will have to sync.

    Did mine last night. Needed a restore too (as others have also reported).

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