On Sunday afternoon next to his apartment complex in Seoul, Min-ho Park is waiting for the bus. At lightning speed, he types a text message to let his friend know he's on his way. Min-ho is never without his phone. In face, he's already bought a ticket on his phone for a movie he and his friends will see this afternoon. Min-ho laughs as he checks some funny photos his friend Jae-sung has just posted online. His bus soon arrives. Min-ho gets on, sits down, opens a game app on his phone, and puts his earphones in his ears. Most of the other people on the bus who are Min-ho's age are doing exactly the same thing.