Totally agree Jimmy, she is paid a lot of money to focus ALL her attention on the punter, for fuck sake it's only an hour she has to leave her phone alone for.
This single act in my opinion should mean she gets a negative review, wouldn't matter to me if she was fit looking or not. She provided a poor service to the punter. Totally unacceptable, I'm would have told her to leave her phone alone, that she was being rude and disrespectful.