Seems the Iphonbe 4S *requires* a valid SIM card to setup the Iphone 4S. However, when i get to the "Network part" of the welcome screen in IOS5.1, where it askes me to either chose a list (amoung them, is mine) Wi-FI, or activate over 3G, I prefer not not do either. Does this mean the phone is unusable until you go through this ? I'd like to skip it. Just as you can with "Enable/Disable Location services" I pressed the Home button but nothing, It gave me Emercy call or Start Over, which takes you back to the beginning anyway.