...becoming more difficult.
doors are closing and life becoming more difficult to navigate.
from "The Free Dictionary"
So... the last person who doesn't use a smartphone.
doors are closing and life becoming more difficult to navigate.
from "The Free Dictionary"
be the last person
be the last person (to do something)
to be the most unlikely person of whom one could think in a particular situation; to be the most unlikely person to do something. (Also literal.) Mary is the last person you should ask to chair the meeting—she's so shy.
See also: last, person
So... the last person who doesn't use a smartphone.