Smartphone Addiction Among Greek University Students: A Cross-Sectional Study Using the SAS-SV Scale

Problematic smartphone use (PSU) is increasingly recognized as a behavioral concern among university students, with consequences for well-being, risky behaviors, and academic outcomes. However, evidence from Greece remains limited. This study assessed the prevalence and correlates of PSU among students at the University of Piraeus and interpreted findings through Griffiths’ components model of addiction. A cross-sectional survey was conducted between March and June 2023 with 1743 participants, who provided socio-demographic, lifestyle, and health information and completed the Smartphone Addiction Scale–Short Version (SAS-SV). Nearly half of the students (49.2%) exceeded the proposed SAS-SV thresholds for PSU (50.5% men; 48% women). Regression analysis showed that alcohol consumption (p < 0.001), weekly screen time (p < 0.001), younger age (p < 0.001), female sex (p < 0.001), size of household (p < 0.033), and anxiety/depression (p = 0.019) were significant predictors of higher SAS-SV scores, while smoking, BMI, exercise, and academic performance were not associated. For the independent statistical tests, the Benjamini–Hochberg correction was applied to control the false discovery rate. Group comparisons confirmed greater alcohol use (p < 0.001), screen exposure (p < 0.001), and anxiety/depression (p = 0.004) among PSU students. Item-level responses reflected components of tolerance, salience, withdrawal, and conflict. These findings place Greek students at the higher end of international prevalence estimates and highlight the importance of integrating digital-well-being initiatives within student health services in universities.