Hi, I bought the Ipad 1 and got the $30/month unlimited data plan. I was able to transfer that to my Ipad 3. Questions: 1. Can I use the unlimited data plan in the Ipad mini? 2. Can I transfer the unlimited data plan back and forth from my Ipad 3 to my Ipad mini? 2a. If so, do I need to physically move the SIM, or logout of one device and login to the other? Thanks.