Haven’t done anything to back this up, but I suspect buildings and cars are extra shielding for the bulk of what we need to avoid absolute meltdown. I also susp

Haven’t done anything to back this up, but I suspect buildings and cars are extra shielding for the bulk of what we need to avoid absolute meltdown. I also suspect modern manufacturing tolerances in general are better than needed and most FCC regulation seems to be focused on protecting the device from damaging other devices or interfering with the ambient EMF.