> This question is fascinating to me! What form of work requires using a smart phone? A common one I've seen around is food delivery workers. Another common o

> This question is fascinating to me! What form of work requires using a smart phone? A common one I've seen around is food delivery workers. Another common one, at least around here, is taxis (we used to call them "radio-taxi" since you called a taxi by dialing to a central and talking with a dispatcher, who talked to the drivers through radio; it's been a while since the bulky radios with long external whip antennas have been replaced with a smartphone app). Another one I've occasionally seen is power company repair workers, who seemed to use their smartphones both to communicate with their central and to fill service order forms. The same for communication network repair workers (though now I'm thinking, how do the cell phone network repair workers do it? I'm guessing they must have a traditional handheld radio as a fallback).