Using Japanese iPhone 3G with AT&T's GoPhone Service

Discussion in 'iPhone Tips, Help and Troubleshooting' started by dougelo7, Jul 20, 2008.

  1. dougelo7 macrumors member


    Jul 20, 2008
    Hi everyone,

    While I was in the States last summer I bought a GoPhone; I opened it and my iPhone 3G up and they have identically-shaped SIM cards. I bought the iPhone 3G on release day here in Japan but I don't want to use roaming on it when I'm in the US next week (I land August 26th).

    My question is:

    Can I swap a Motorola cell phone's GoPhone SIM card with an iPhone 3G's SoftBank SIM card and use the iPhone 3G in the States? If so, can I also use cellular data and how much does data cost? :confused:

    Thanks for your time!:D
  2. pranavss11 macrumors 6502

    Dec 29, 2007
    San Jose
    This is interesting. I am about to "India" with my parents to meet my grandparents in August and wondered about the same thing. The question is, if the phone is "locked" is it locked to all Apple Carriers or just one. If it does work, call ATT and ask them to add a 30$ 3G unlimited data plan to your GoPhone. Although if I remember correctly, my Pay as you go sim card from my iPhone 2G didn't work on iPhone 3G,

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