Putting a mobile phone on the restaurant table will ruin your meal

Two studies showed that if a mobile is visible during a conversation it causes people to feel less positive towards the person with whom they are chatting.

The findings suggest that fiddling with your mobile or simply leaving it in view during a romantic dinner or a meeting with a friend could be a serious social faux pas. 

http://www.telegraph.co.uk/science/science-news/9589232/Putting-a-mobile-phone-on-the-restaurant-table-will-ruin-your-meal.html