en <div style=text-align: justify;><strong>Aims: </strong>Mobile phone use has become increasingly popular among university students. Therefore, the present study aimed to investigate the status of mobile phone use among university students and its relationship with demographic characteristics.<span dir=RTL></span><br> <strong>Instruments & Methods:</strong> In this cross-sectional study conducted in 2016, 272 students of Yazd University of Medical Sciences were selected using a stratified random sampling method. The data collection tools included demographic information and excessive mobile phone use questionnaire. The data were analyzed by SPSS 16 software using Mann-Whitney and Kruskal-Wallis tests.<span dir=RTL></span><br> <strong>Findings:</strong> There was no significant relationship between students' age, gender, education level, and residence place with mobile phone use total score (p>0.05). However, there was a significant relationship between the variables of cigarette smoking, coffee consumption, and listening to music before bedtime with the mobile phone use total score among university students (p<0.05). Moreover, there was a significant relationship between the education level of university students’ parents and mobile phone use score (p<0.05).<span dir=RTL></span><br> <strong>Conclusion: </strong>High value of adequate and correct education of students towards Internet and social media addiction, in addition to increase the level of media literacy are critical issues to consider in this regard.</div> Mobile Phone Use, Iran, Medical Students, Psychology, Cross-Sectional Study 161 166 http://hehp.modares.ac.ir/browse.php?a_code=A-10-44748-2&slc_lang=en&sid=4 Z. Khazir 1003194753284600178720 1003194753284600178720 No Department of Health Education and Promotion, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran M.H. Amirzade-Iranaq 1003194753284600178721 1003194753284600178721 No Universal Network of Interdisciplinary Research in Oral and Maxillofacial Surgery, Universal Scientific Education and Research Network, Tehran, Iran S.H. Niksima 1003194753284600178722 1003194753284600178722 No Preventive Medicine and Public Health Research Center, Iran University of Medical Sciences, Tehran, Iran M.A. Zareipour z.morad@yahoo.com 1003194753284600178723 1003194753284600178723 Yes Health System Research Unit, Urmia Health Center, Urmia University of Medical Sciences, Urmia, Iran