Went on holiday with a friend and found he constantly did this when I was talking , after couple days of putting up with it , then I decided I’d play him at his own game . We went out one evening at the hotel , lovely music and Spanish dancers and he kept telling me how wonderful they were , so, my reply was to ignore him as I was far too “ busy “ checking texts and sending messages on my phone , he didn’t like it one bit that I wasn’t taking any notice , but , I didn’t care . Later when we got back to our hotel room he told me it rude of me not to answer him at the show , so, I said, now you know how it feels because you’ve been doing just that same thing to me past couple days ...so .for the rest of the week he kept his phone well hidden when we were in conversation.....did the trick ...