If it works effectively, you wouldn't really need that many smartphones. A lot many countries go by with shared resources for many areas to get things done.

E.g. In villages in India or Africa etc., there might be one person with a computer and an internet connection who might offer his/her services as a co-operative for the residents of the village. The same way, one smartphone equipped with the relevant applications per district or a village can effectively tender assistance to all those in need from the surrounding areas.