I don't care what my opponent does while I'm at the table, as long as it doesn't slow the match down. I don't consider it disrespectful because I'm not there to perform for any opponent. They could just as well be carrying on a conversation with someone on the other side of the room for all I care, but when it's their shot they better be there to play.
I watched SVB and Jason Shaw in Vegas a couple of years ago. They did the phone thing too. I thought it was funny. In my mind I pretended they were talking trash to each other through text messages. Every time Shane would leave the table he would sit down and grab his phone, and Jason was doing the same every time he went to his chair. I don't remember seeing any other players doing that.
I watched SVB and Jason Shaw in Vegas a couple of years ago. They did the phone thing too. I thought it was funny. In my mind I pretended they were talking trash to each other through text messages. Every time Shane would leave the table he would sit down and grab his phone, and Jason was doing the same every time he went to his chair. I don't remember seeing any other players doing that.