I have the unlimited plan from ATT on mu iPad too.
That’s because I bought the iPad one on the first day they went on sale. I stood in line and bought my iPad and then a day or two later AT&T cancelled the plan.
I just bought the new iPad Air and was able to transfer my unlimited plan over to the new one. :)
“If you like your plan, you can keep your plan. Period.”
Thanks for the tip! I had transferred my unlimited plan from my iPad 1 to my iPad 2. Thought that might have been a fluke. Good to know I can again transfer it when I buy an iPad Air. Like you, I bought both 1 & 2 respectively on first day. Sadly, since using the iPad my desktop PCs (yeah, old Windows towers) are dust-covered bricks. Too much versatility with the iPads.