Finally the question has been answered - Why do we have to turn off our phones when the cabin door closes? The answer is, of course, you really don't have to do it anymore! That's right, the rules have changed and you can now have your phone on from gate to gate. To begin with some of the airlines will have slightly different rules - not sure why, but you can be sure they'll explain what you can and cannot do when you board.
The good news is, thankfully, that until you're on the ground and instructed to do so, you still won't be allowed to talk on the phones. When that day comes I'm voting for a special cell phone section. Or, maybe a cell phone free section. However you describe it I don't want to sit on a 2 or 3 hour flight next to someone telling the person on the other end of the call what they had for breakfast, what their ailments are or what their spouse did to earn the divorce.
One thing you can be sure of is that since it has been decided that inflight use of these devices is not hazardous to the flight there will be those trying to figure out how to bend the rule and add voice to the communication. Likely the first target will be the restroom, so if you need to go you'd better do it before you get on the plane or immediately after boarding while the talkers are still free to chat on their phones. Once the plane is in the air you can bet there will be a non-stop parade to the restrooms to use the phones.
If you've ever been in a court room you may recall the court stenographer wearing what appeared to be a mask that she talked into to record the court activities. Don't be surprised if you don't see something similar pop up on shelves in your electronics store. The way those things worked was the speaker talked into the object and it muffled the sound so that it did not interfere with the court proceedings. I wouldn't be surprised to board a plane and see a hundred people wearing some sort of device that allowed them to carry out the calls discreetly. Maybe that would be a good thing - inventors take note. And, send me my royalty check . . . and, Keep on Traveling!