I do have a smart phone, but I only got it because I needed it as a hot spot to get internet where I live.
For years I only used it for that, using an old school dumb phone for calling and texting.
Then I decided to start using it for texting and calling, as well, but still keep my old phone charged up and on, because many people who i don't call regularly only have my old number. So I can answer that old phone, but don't call out on it, because I don't pay for time on it.
Then my little digital camera, which I loved, died, so I had to start using the phone for taking photos.
But that's the extent of my cell phone use- never used the Airbnb app, or Whatsapp, or any other app and still do my emailing on the laptop. Typing on the phone keyboard drives me crazy.