Cell phones normally cause distraction and one might forget that they're supposed to work . This usually slows down the working pace and that's like wasting money. Time is money, the more you spend time chatting or making phone calls, the more money you lose and there's no boss who can allow that in his company. Also, while using your phone, you might get some shocking news like for instance death of a beloved. There's a process in which those kind of news are passed and not just like that. Keeping your call phone away till work is over can work well and no matter how you react to the news, at least it will be after work and people can help out unlike when its work time. Despite of many being warned against using cell phones while working, many don't take this into serious consideration. That's why you'll find many people making confusions like giving extra balance among others.