Although about 20 years ago, most people did not have a mobile phone, but nowadays most people have a mobile phone, especially a smart phone in recent years.
When I ride the train, most of the people are using smartphones. It became common to see such a scene by now, but it was impossible to imagine it 20 years ago.
By e-mail and/or social networking application of the smartphone, not only close people such as family and colleagues, but also old friends and the friends around the world are all connected 24 hours a day, 365 days a year.
Not only become convenient by the smartphone, but also the new value is now created, also born anti-social phenomenon in reverse.
Why do human beings seek the connection? Can you abandon the smartphone?