To understand the problems that smartphone use has today, we have to review the previous studies
on technology addiction that is highly similar with smartphone service addiction in many ways.
Problematic use of technology can be found easily. For instance, Beard(2005) insists that anyone can
be addicted to internet today [5]. In the past those who are internet addicted were stereotyped young,
introverted, and computer-oriented male. But this stereotype is not true anymore. For instance,
Young(1996) reported that 61% of internet heavy users were women [6].