I was getting a strawberry eggnog ordered today so I was making lots of back and fort calls to the supplier/friend of mine. And I always click on the number and on the options between texting and calling I choose calling.
After a while I got a notification saying something like "click on the left phone icon to quickly call someone". I didn't understood what it mean but then all the little phone icons moved when I enter the Phone app, as if they are saying, "hey! over here, go ahead".
Now I learned this useful thing that would otherwise be forever ignore by my dumb persona. I love that my phone teach me how to use it better.