The aim of the study was to investigate smartphone addiction effect on physical activity, recreational sports participation and educational success. In total, 255 students studying at Dumlupinar University and using smartphone (136 male and 119 female) voluntarily participated to the study. Within the scope of this study, Smartphone Addiction Scale-Short Version (SAS-SV) (Noyan, Darcin, Nurmedov, Yilmaz & Dilbaz, 2015) was applied to the participants. To the data gathered from the participants, parametric tests as Independent Sample T-Test and ANOVA were applied (p<0.05). According to the results there is significant difference between smartphone addiction of participants and gender, age and recreational sports (p<0,05); but there is no significant difference between smartphone addiction and academic success and recreational activities practiced (p>0,05). It is considered that participants with higher academic grades may have higher smartphone addiction score because of using smartphones as teaching tool in classrooms. Participants practicing physical and recreational sports have less smartphone addiction score and it can give a clue that smartphones are constraints for physical activities and this may be a reason and taking precaution subject for a sedentary lifestyle and unhealthy individuals.