Interesting. My whole family is on iPhone and I remember that my mother had an Android phones years ago (Samsung), and she never fully understood it. Nowadays I have no "support cases".
We originally chose iPhone for my grandparents because they were intuitive and easy to use.
I have to help her more than before. It does seem that either iOS is sending her more notifications about various things which she is scared to touch.
Im not entirely sure what triggers it, but I think the fact that she doesn't get the "toolbox" view you can swipe up. I've had to help her with turning wifi back on, or screen becoming to dim.
I wouldnt be surpised if it is the swipe gestures that she randomly engages and all of the sudden the phone is doing something she didnt intend that makes her afraid of "breaking it".
Though, I havent actually tried to observe her usage.
As an Android user having to help family members with their i devices from time to time, iOS devices frustrate me to no end.
iOS might have a good user experience if you're already used to it. But as someone who is not familiar with it, but uses it from time to time, I find it an horrible experience.
It looks good tho, gotta give it that.