Former cell phone revolution comes from iphone-- cell phone plus apps . The greatest things iphone bring to consumer is to fill up the odd time, and free people from getting bored. However there is byproduct from iphone because iphone or smart phones intensify the connection between men and their cell phone (the bode line below) so it will weaken the link between people and people（the dashed line before), because the concentration of one man is limited. Hence we will see very often in a restaurant two man across the table play their cell phone alone and never talk to each other. But in the essence of cell phone is to connected with people , and in the fundamental demand of a man we want to get more connected with people not less.