I don't think the issue applies to all iphones, just some. The notebook features do work on my sons' iphones...which have the same configuration as mine. So, I believe it has to be a setting somewhere...however I even wiped my iPhone and set it up as new but that didn't fix it. Sorry I have no answers!
Jeez, this is so weird. I've not come across it since this first gave you trouble Julie. I'm wondering if this is bigger than ARIS. I looked a bit, and don't really know what I'm doing, but I did find this at StackOverflow, about changes to permissions since iOS10: