Somebody gave me a 16GB iPhone 3G two days ago. The why and the how would be a bit of a long story, but I'm trying to get some some use out of the thing now. As this is my first iPhone, I'm not all that familiar with all the things that should or should not be on there. I do know that it came preinstalled with cydia and installer, and there's a Gevey-3G SIM card next to my own SIM card (China Mobile, for whatever that's worth). The problems I'd like to solve right now are the following: I can't use iTunes when my iPhone has a SIM card in it. It gives the error message "The SIM card inserted in this iPhone does not appear to be supported." It does seem to recognize the phone when there's no SIM present. It seems I'd only be able to sync with one computer. Really? Are there ways around this? I'd just like to be able to put some podcasts on the thing at the office as well as at home.