Changing SIM cards on unlocked phone

Discussion in 'Jailbreaks and iOS Hacks' started by gene.sf, Feb 23, 2008.

  1. gene.sf macrumors newbie

    Feb 23, 2008
    I'm using a T-Mobile SIM card on 1.1.3 OTB iPhone which I unlocked. Just now I tried swapping in an AT&T SIM which is setup for a Pay-as-You-Go account. This SIM does work in another phone, but on the iPhone, I get a message that I need to add money when I try to place a call.

    I thought once the iPhone was unlocked, it was unlocked and would work with any SIM. Am I wrong, or is there some other reason this isn't working?

  2. CD3660 macrumors 68040


    Jun 6, 2007
    Cheshire, United Kingdom.
    Sounds like you just need some credit on the sim card and you should be able to make calls. :)
  3. gene.sf thread starter macrumors newbie

    Feb 23, 2008
    That's not it, it has credit -- it works on another phone and I checked the account online too.

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