Background: Nomophobia is the abbreviation of the term “No Mobile Phobia”. This term describes a new phenomenon of a desire of affected personnel to constantly keep using their smartphones with sever fear of being detached from. This desire consequently causes them to loose self-control over its use. Design: A randomized controlled trial design was used in this study. Participants were randomly assigned to either the study group or the control group. The study group received the self-regulation program, while the control group did not receive any interventions. By comparing the outcomes of the study group with those of the control group, the researchers were able to assess the specific impact of the self-regulation program. Sample: 1182 participants were initially recruited for the study. However, after applying the pre sample selection criteria, 1,122 participants were excluded from the program leaving a final sample size of 60 university nursing students who had lower scores in self-regulation and higher scores in NOMOPHOBIA. These participants were randomly allocated to two equal groups: a study and control group.