You weren't following my instruction in my previous post:
Choose T-Mobile in the "Select the wireless carrier that you most recently used with this device" field.
The goal is to get t-mobile nano SIM card for 99 cents. Don't worry about compatibility. They are all the same device with different SIM in them. I purchased a 1st gen iPad Air with AT&T SIM in it but I've been using t-mobile SIM instead.
> By the way, on t-mobile, the .99 offer says you need a qualifying plan in the fine print. Do you have a plan with Tmobile?
While I have a prepaid t-mobile plan, it is unnecessary to get the $0.99 SIM card and 200MB free data. I'm positive you don't need a t-mobile plan. Having said that, it won't hurt to read what you're purchasing carefully. You should see the following during checkout:
One time fee: $0
Due today: $0.99
Due monthly: $0
That should be good. When you receive the nano SIM card, insert it in your iPad. Then use your iPad to sign up for a new t-mobile account and choose 200MB/month free data (this is important. If you choose the wrong plan you will be charged). If you don't see the 200MB/month free offer, do NOT choose other plans unless you want to pay.
Another important info (read below) from the link I mentioned several days ago:
All iPads are sold unlocked. However, Verizon will only allow iPads in their database on their network. So, if you activate your iPad Air 2 or iPad mini 3 on another carrier first, you won't be able to use it on Verizon later. Not ever. However, as long as you activate it on Verizon first, you can then switch to another carrier of your choosing later, since Verizon is the only carrier with this restriction.