[CWuestefeld]

it's (vaguely, remotely) possible that some new phone released yesterday is dangerous,

That's no greater a possibility than for my netbook, or my wristwatch, for that matter. Why pick on phones over other electronics?

(I suppose the answer is to see your previous paragraph regarding rationality)

[mquander]

They don't pick on phones over other electronics. On every flight I've been on, they ask passengers to shut off "all portable electronic devices," including things that often don't even communicate over a network, like CD players.