I likened changing from a Blackberry, which used to be all the rage, to an iPhone was like going from grammar school to college. My first and only iPhone was an iPhone 4. When that started dying, I got an Android phone free for switching to MetroPCS. Its camera was terrible though, so my husband gave me a Samsung phone for my birthday. That was over a decade ago and I've stayed with Samsung, which I like just as much as the iPhone.
I use my smartphone for so many things that I can't imagine being without it. A few uses: ordering Uber and Lyft rides, playing several games, calendar and timer alerts, calculator and other financial stuff, notepad (from which I text my son shopping lists), texting and other communication apps and camera. Using the Shazam app, I can even find out what song is playing when I'm out and about or watching a TV show and hear something I like. I've done that several times with songs I liked enough to purchase.