AT&T - SIM to Micro Sim?

Discussion in 'iPhone' started by ThunderApple, Nov 4, 2011.

  1. ThunderApple, Nov 4, 2011
    Last edited: Nov 4, 2011

    ThunderApple macrumors 6502

    Apr 27, 2010
    Just bought an iPhone 4 from my friend. I'm currently running on a 3GS.

    Of course, the 3GS has a SIM while the 4 requires a Micro Sim.

    Am I able to simply go into a AT&T store and request that they just transfer all my data plans and such into a Micro Sim? How does this work?

    EDIT: Sorry guys! I meant to post this in the Help section. Admins if you can, please move it there.
    Thank You!
  2. deeddawg macrumors 604

    Jun 14, 2010
    Yes. Go into an AT&T corp store and say you're moving from a 3GS to the iphone4 and they'll switch you over. Take both phones. Shouldn't take more than a few minutes.

    I did this after getting my 4S and giving my 4 to a family member who had been using a 3GS.

    You'll need to be the account owner or an authorized retail user (setup by acct owner on the ATT website)
  3. ThunderApple thread starter macrumors 6502

    Apr 27, 2010
    Here's the thing though. The iPhone is a custom Red and White.

    It's a authentic black one but my friend had a custom color conversion on it.

    Would they say anything?
  4. TM WAZZA macrumors 68000

    Sep 18, 2010
    Hamilton, New Zealand
  5. steph280 macrumors member

    Jun 24, 2010
    Orange County, CA
    I have used that SIM cutter many times and it works great! If needed, you can tape it back and still use in your 3GS.
  6. FreakinEurekan macrumors 68040


    Sep 8, 2011
    Eureka Springs, Arkansas
    AT&T won't care, it doesn't affect how it's used. The only issue you'd have there is if you wanted Apple to service the phone, they might refuse based on the alteration.
  7. ericrwalker macrumors 68030


    Oct 8, 2008
    Albany, NY
    I cut mine with a box cutter, but I am sure AT&T will swap it out for you.
  8. ThunderApple thread starter macrumors 6502

    Apr 27, 2010
    Thanks everyone! I think I'll save the hassle of buying those cutters and just take it to a AT&T store. :)
  9. driftwoodtea macrumors member

    Oct 19, 2011
    Edinburgh, UK
    Wow, those are some fancy look cutters. You can always just use a pair of scissors. That's what I did after Three, my mobile company tried to charge me £5 for a micro sim.

    Instructions can be found here -

    A sim only mobile company here, giffgaff, also have instructions on how to adapt one of their sims to fit a micro card slot.
  10. dave006 Contributor


    Jul 3, 2008
    Just West of East
    Just don't let them charge you for the new replacement Micro-SIM.

    Some retail locations want to charge you $20 for a new Mini-SIM or Micro-SIM. Also, make sure that you don't get a new 2 year contract added while in the store. :eek: Sometimes it is not better to go to the store.

    Your data plan and other information is not transferred to your replacement Micro-SIM. The update is to your account to add the IMEI of the iPhone 4 and the ICCID of the new Micro-SIM.

    Do you currently have the iPhone Unlimited Data plan? They will want to transfer you to the new iPhone 4S Unlimited Data plan. Again, just make sure that you understand any changes they make to your account. :eek:

  11. TM WAZZA macrumors 68000

    Sep 18, 2010
    Hamilton, New Zealand
    That's another way to do it :). But knowing me I will mess it up somehow. So I just bought the cutter, it came with 2 adapters too.
  12. ThunderApple thread starter macrumors 6502

    Apr 27, 2010
    I went and they charged me $20. I was fine with that. I honestly didn't want to have to order a cutter and wait for that to ship to me. I've been waiting to get my phone for a month so paying a bit of extra isn't going to kill me.

    Thanks everyone for their help!

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