I have been given an iPhone 4 which came from Japan and it used a SoftBank sim. Unfortunatly the SoftBank sim did not come with it and when I tried to restore the phone on ITunes it is asking me to insert the compatible sim which I don't have. Is there anything else that I can do rather then me having to go to Japan? Is there a place here in south australia that I can purchase a sim? I have checked eBay they don't sell SoftBank sim I just need one seeing I restored the iPhone on ITunes. Please someone help me.???