But any cellular iPad will work with any carrier, right?
My Verizon iPad Air is currently connected to a T-Mobile 200MB/month free account. Made the mistake of buying the nano-SIM in person though. I didn't care about paying the 10 bucks, it was the 20 minutes of constant sell up while they 'programmed' my SIM.
Didn't need to use a credit card to buy the SIM, and didn't provide any payment details when I signed up for the 200MB plan.