I would think the answer to the question...Is that you? would be a simple, No.
And if there is no record of him using his phone to check up on Wall Street data, and he said exactly that's what he was doing....almost sounds like he's lying.
On another note, I'd like to go out in those woods with my Minelab Equinox 800...I have thousands of hours on a metal detector, and start at the scene where these girls' bodies were found, and pull every bullet, casing, bottle cap, pop tab, piece of tin, balled up aluminum foil, penny, and nail layin' around there! The least likely item out of that list to be found around there is an actual unfired .40 caliber round.