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

https://city-wiki.win/index.php/How_Do_I_Keep_My_Entertainment_from_Draining_My_Battery_During_Travel%3F

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.