Originally Posted by aviatorpr

IMO you are spot on except for the cell phone/FCC idea. Cell phones interfere with our radio communications, cause a buzzing sound in our headphones, and while taxing, that is a critical phase of flight where we need to hear all instructions given by the ground controller, ramp tower, or runway tower controller. I still cannot get a clear answer as to why it's ok to turn on and use once we land, but not on the taxi out for takeoff, they should be turned off from door closing till door opening. Also, you are not going to get cell phone reception above 10k feet which most commercial airliners cruise above.