Regarding
10secondsurvey's aside - in my experience most airlines seem to indicate
all electronic equipment needs to be switched off on take off and final approach irrespective of whether it is a camera, mp3, CD/DVD player or a 'phone; the 'phone generally getting the announcement that they must be switched completely off, including 'flight safe mode' when the doors are closed till inside the terminal at t'other end.
Personally I love turning my 'phone off (as in "sorry boss, I was flying...")
