Hi, I'm a nooB! I am surprising the wife with an unlocked iPhone 5 for Christmas (purchased unlocked from Apple and not activated yet). I have a T-mobile nano sim (not activated yet). Question: Can I simply put the T-mobile sim card in and set up the phone without actually activating the sim yet? I want to Jailbreak on Dec 22 when the JB comes out and I don't want her to know that I'm doing this. What I'm trying to avoid is interuption to her cell service on her iPhone 3GS that she is currently using. When I turn on the iPhone 5 I can't get past the welcome screen because I haven't inserted the sim card. It keeps asking for a sim card and I don't want to insert it in fear of it going through a whole setup process, rendering her iPhone 3GS useless until she gets her new one. Thanks everybody!