Smartphones help pass the time when you’re waiting in line or sitting on a bus....

https://domgodwinson38.gumroad.com/p/is-gsma-a-good-place-to-learn-about-mobile-tech-basics

Smartphones help pass the time when you’re waiting in line or sitting on a bus. You can listen to podcasts, catch up on short videos, or play games to stay entertained and distracted. This makes those moments feel shorter and less boring.