I know it has been said that cell phones don't make a difference but......its the only explainable thing that I can come up with.
For the better sake of safety, I'm shutting mine off when I'm at the field. I don't need a 6 pound airplane doing 60 mph to fly into
the pit or parking lot area with no control. My luck, it would hit a cadillac escalade and go right thru the windshield.

Dave...