The first time somebody handed me an unlocked iPhone asking me to send a SMS (she was driving) I wasn't able to do it. I had to ask her where to touch. She was really surprised. I had a few years of experience on Android and 10+ with feature phones.
On the other side, I asked another friend of mine to take a picture with my Android phone a couple of weeks ago and she (an iPhone user) wasn't able to find the camera app. I had to open it for her. It was on the home screen, maybe it's different on the iPhone.