“…Moreover, users who most frequently use social networks on their smartphone tend to develop addictive habits faster (Jeong, Kim, Yum, & Hwang, 2016). Numerous cross-sectional investigations have identified that users with lower levels of social support show also higher levels of smartphone addiction (Aker, Sahin, Sezgin, & O uz, 2017;Billieux, Philippot et al, 2015;Ihm, 2018;Kim, 2017Kim, , 2018Kwon, So, Han, & Oh, 2016;Lu et al, 2011). Longitudinal studies in this field are less frequent.…”