Upgrading from a iPhone 4 to 4S, only need to swap SIM card?

Discussion in 'iPhone' started by jazoi, Sep 22, 2012.

  1. jazoi macrumors member

    Jun 7, 2012
    I recently upgraded to the iPhone 5 from a 4S. My wife has an iPhone 4. I want to give her the iPhone 4S. Do I only need to swap the SIM card from the 4 to the 4S for that? Or do I need to call AT&T?
  2. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    You will have to call AT&T too to give them the IMEI number.
    This way they can upgrade the phone data plan on their end so you can get the faster HSPA+ speeds available for the 4S.
  3. jazoi thread starter macrumors member

    Jun 7, 2012
    Thank you! I will do so tomorrow.

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