Just wondering...can you transfer your unlmited to you ipad2 just by swapping the sim?
Unlimited from the iPad 1 > iPad 2: Yes
http://www.engadget.com/2011/03/05/...fathered-unlimited-ipad-data-plans-on-ipad-2/
From the iPhone unlimited to iPad 2: Yes, but you need to change the APN settings on the iPad, which is pretty easy and does NOT require a JB.