Same problem here. Cannot open the phone message.

I imagine there's a glitch somewhere in that particular area. Perhaps have your people go in and find that particular glitch and work on it. Left handed is no problem for me as I use both R & L buttons. I did try both of those on the phone, but there is just no way to even figure out what it says, so I think fixing that problem is a matter of just something that was missed in the production or making of the game.Nothing a little checking into shouldn't be a problem.