I'm hoping someone can answer my question, as I am not real familiar with the JB process. I have an iPhone 3GS that was updated to the latest iOS update. I bought another phone and want to give this to my daughter to use as an iPod Touch as I did with the first-gen phone. Problem is, iTunes says it needs a SIM card and can't go any further beyond that screen. I have an old SIM card I could stick in there, but I'm afraid it will screw up my AT&T account. Advice?