I wouldn't eat at that restaurant but reading some replies, I think if family at home need you, give them the number to the restaurant you're eating at, let them contact the restaurant if it's urgent, I don't like dining while my companions are all nose down into mobiles, we have an agreement before going out,that whoever is first to pick up the phone pays the dinner bill, it's all tic really, it never actually happened but we still stick to that plan and leave the phones on silent or look at them while out for cigarette break