Has anyone tried getting a regular phone SIM to use in an iPad Pro on AT&T so you can get a cheaper rate? I have 3 iPhones and one iPad Pro. I would like to take advantage of 40 per line for 4 devices like T-Mobile will do. I just can’t use T-Mobile after a failed attempt because of where we live. I would like to see if I can get by without telling them one line is an iPad and set it up so I can get a lower rate. Does anyone know if this will work on the iPad without a problem. Thanks