In article ,
Chris Blunt wrote:

I don't know, but cellphones had previous been disallowed at any time
on aircraft on the basis that they were a risk to flight systems. The
point is that now that the airlines have discovered they can make
money from their use, they are apparently no longer considered a
danger.

Chris

The cell phone concerns have always been FCC instead of FAA. Not to
say that the FAA may not have had some, just that the FCC weigh in made
it unnecessary for the FAA to make any kind of decision.