Okay so I currently have an iPhone 5 on sprint and was wondering if I can get a AT&T nano sim and pop it into the sprint iphone 5 and see if it works? I know it won't be lte speeds only hspa+ speeds. That's fine but I'm wondering if this will work. I don't trust myself cutting my own SIM card so I'd just transfer my data. So the question is can I put a AT&T SIM card into a sprint iphone 5 with it to be able to function?