http://www.snopes.com/rumors/beamer.htm

For what it's worth, the folks at Snopes haven't concluded what the exact cause of Flight 93's destruction was...though they confirm the phone calls...most sources I've seen have said "cell phone", not just for Beamer's phone, but for other passengers' phone calls, too...I have seen one that said an "in flight phone", which would probably be referring to the phones attached to the seats in the plane.

Fish on...

Todd