Wow, that would take some doing as there would be little money in it
First, it would have to be a labor of love for a designer to put the time in to come up with a unit.
Second, it would have to use mainly existing cellphone components, probably obsolescent ones.
Third, the assembly would have to happen on the backshift of a cellphone factory.
If the planets could align to make this happen, it would likely be a 700/800 only scanner, which would appeal to some in the major cities.
I go along with not holding your breath.