People often do not turn of their smartphones, do not go out without them, and use them for
business, relaxation, and socializing. Smartphone usage can lead to addicted behavior (Wood & Neal,
2007; La Rose & Eastin, 2004). The relationship between people and their smartphone is much more
developed than expected compared to the fixed telephone and even with their desktop or laptop
computer (Carbonell, Oberst & Beranuy, 2013). This is particularly true of adolescents, as they spend
much time with and on their smartphones; in addition, adolescents are more sensitive to rewards
and cues than older people (Haverlag, 2013).