I've searched up and down and haven't been able to find a straightforward answer to this question. Will a US iPad work in Canada using roaming, without switching out SIM cards or anything like that? Or do you HAVE to get a new SIM card? The President where I work is going to Canada for a few days and wants to know if his iPad will work. He doesn't care about the roaming charges, and going to get his SIM swapped out isnt an option.