I have an iPhone 4 and I received a Nexus One today and want to use it for a few days, but still want to use FaceTime one the iPhone. I was wondering if there is a way to use FaceTime on the iPhone 4 without a SIM card in it. I will mostly be using FaceTime to other iPhone 4's. Any help is much appreciated. I have done some research, but I can't find a definite answer to my pleasing. Thanks again!