I can't even get to the Home Screen without putting in a AT & T Sim Card can someone help! It says "No Sim Card Installed, Insert a valid Sim Card without a pinlock to activate iPhone" (I want to run the iPhone with T-Mobile..) Also, I'm in desperate need of finding a Unlock for the iPhone 3g 4.2.1 that allows me to update via iTunes when I need too. I don't want the hassle of always updating through pwnage tool. Link me to YouTube videos if possible! EDIT: Do you think buying this would get me to the home screen because right now I can't even go to my home screen without a AT&T sim. I was thinking of buying this: http://cgi.ebay.com/ws/eBayISAPI.dl...277732&ssPageName=STRK:MEWAX:IT#ht_5224wt_907 Please Help!