That was in the days when few had cell phones, and so you could use them on flights. I found by experimenting, that as I was coming into a metro area, they would start working as the plane descended, about the time we hit 10,000 ft and below ...
They work great for you because you have 3 watts of power as opposed to what, about 1/2 watt with todays pocket warmers?
(Personal Rant)
Well you know, I am all for more conveinient,
and easier luggable "stuff"...But i think
that the "cool factor" in making phones
ever smaller, has just gone way beyond
rediculous.
I would happily carry around a
much (relatively) bigger cellphone,
if i could get one that had a *4"
screen and a battery that held twice
the charge. They are just getting *too*
small.
Give me a bigger screen, more battery
power, add more memory, but stop
thinking that *small* is the only
factor in a phones "coolness".
Geeez!
(End rant)