I don't see anything that makes it look particularly like a phone, it look too long to my mind. I think it looks more like she is holding a purse up to hide her face from the camera. As for the talking, I don't see why she can't simply be talking to the gentleman who disappeared off-screen as she checks to see if she is still in the camera's line of sight.
I really doubt that not one out of more than a hundred people could offer an alternative explanation, it seems far more likely that he just wont accept any alternative explanation over what he truly believes he is seeing.
TTFN,
WK