Does anyone know if I can use and Australian Iphone on straight talk's network. It should be a GSM phone and I can't see why I can't just put the SIM card in and have it work. It won't recognize or let me do this, but seems like it is tied to the Vodafone network in Australia. If I restored the Iphone would that make a difference. I did unlock and Jailbreak the Iphone, but that didn't fix the issue. Thanks for any help.