I think it would be a very brave company (or body) that outlawed phones on flights, most of the population own them!
And there goes the business traveller if he cant take his mobile brain tumour unit with him on his flight. Net-meeting, e-mail, fax, Conference lines and the like are all taking a bite at the flying cherry (no matter what the adverts say regarding face to face business).
Along the lines of a similair thread, I do beleive it is quite easy to block the phone's signal using a thin sheet of aluminium (similair to baking foil, sprinkled with fairy dust or some other technology!!) but who pays to upgrade the a/c? Vodafone, Orange etc?. OR....
There goes the pay-rise next year!!!!
One more thing, its been a year or so since I was on pprune..It really is quite a magnificent site. Well done boys and girls.