While I was trying to get the T-Mobile thing set up, I thought I would try this. Took the nano sim out of 5s and put it in ipad. Downloaded a few things and it seems to work fine. Wifi was off. Wonder how long before they catch it, and what will they do. By the way, my iphone has unlimited data. Seemed to work fine. OOPS... when I put them back, nothing worked. Maybe I mixed up the sims? Switched again, and all is fine.