Maybe Im just sleep deprived but I started thinking just a bit ago. I bought me and my wife the iPhone 3G back in April on the 10th. I was switching from Sprint and very pleased to just have an iPhone. 3 Months later I would be even more pleased to have the new iPhone 3GS and so would my wife. I am able to have up to 5 lines on my account so I was thinking ways around paying $600+ for a new phone. .. If I was to go ahead and add two new lines to my account and purchase 2 new 3GS's then go ahead and sell our two old 3G's. Essentially that's now 4 open lines on my account with the Family Talk plan. Could I then take the new phones and just our old Sim Cards in them and tada? I understand it would be another 9.99 for each additional line but our neice has wanted a phone for a while so I wouldnt mind getting her a cheap phone and letting her onto the account. Then I would just have an open account with essentially a 9.99 fee a month for nothing but that is fine with me to be honest. My only concern is would they cancel the iphone data plans on the 2 new lines. Sadly, there would be a little bit of lying involved I would think as the only way I see it working is to say either the 3G's got stolen or broke or the new 3GS did for AT&T to be rid of two iphone data plans. Or am I just weird and or Stupid.?