Table 1.

Six smartphone app categories

Category	Purpose of use	Applications
SNS/chatting	Social relationship seeking	Social networks, messengers, chatting, and vlogs
Web	Information seeking	Naver, Google, Chrome, Daum, Nate, and Dolphin
Game	Game enjoyment	Simulation games, role-playing games, arcade games, action games, board games, game money, and game items
Entertainment	Content enjoyment	Media/videos, sports, travel, music, books, and comics
Shopping	Consumption seeking and buying	Clothes, tickets, books, and used items
Lifestyle	Ordinary life maintenance	Phone calls, text messages, e-mails, addresses, diaries, deliveries, and delivery tracking