You find the iPhone easy to use because the iPhone is easy to use and more or less consistent in every iPhone device you’ve used. A five year old can use an iPhone.
That’s competitive differentiation, which is very much part of marketing. An iPhone isn’t easy to use in the same way that git is easier to use than svn for someone who has been using git for a decade.
When I had my six month affair with an Iphone 6 it took me a month (I don't get many calls) to finally get frustrated enough to google "How to reject calls" because I was so used to Android giving me a big red X that I never even considered pushing the power button to reject a call (I think that even just mutes incoming calls on Android, I forget), that X let me mute or reject based on the direction I swiped it. I could only figure out how to mute the rings which means my car radio would just be silent until the caller finally gave up.
I know a lot of iphone users think it's the most intuitive machine in the world and a 5 year old can get it, and I'm obviously heavily swayed by my decade or whatever with Android but the amount of hidden/unintuitive-to-me/impossible-to-do things I found was what moved me back to Android after that trial.
I spent a LOT of time searching on Google for how to do things with that phone.
That’s competitive differentiation, which is very much part of marketing. An iPhone isn’t easy to use in the same way that git is easier to use than svn for someone who has been using git for a decade.