[Acehigh]

Most flights, at least the ones i've been on had a phone built into the armrest that you can use with a credit card. Of course its pretty expensive, but at least if you need to call someone you can. And I believe some of the first class have an internet hookup..... might be wrong on that one tho.... anyways, as far as it affecting the navigation on the airplane. it really doesn't, now the risk may increase with 1,000 phones going off in an airplane, but its doubtful.