“We’re flying in a Lockheed Eagle series L1011. It came off the line 20 months ago. It carries a Sim-5 Transponder tracking system. Are you telling me I can still flummox this thing with something I bought at Radio Shack?”
I can sort of understand not having cell phones and the like on during takeoff and landing, as these are the most dangerous parts and if any devices do interfere with the instruments, it could end badly. However, I’m convinced the real reason cell phones aren’t on in the sky is so that passengers don’t disturb each other by talking and so they don’t cause a panic causing loved ones if something happens. Best to have them listening to the flight attendants’ instructions than talking on the phone to a loved one in an emergency. Plus the cell phones probably won’t work anyway.
They probably don’t cause interference, but really, it’s only for a couple of minutes at the beginning and end of the flight usually. Can’t you just wait?