Now a day's Smartphone has been spread among the worldwide. A smartphone is a mobile phone running a complete operating system in a manner similar to a traditional computer, which offers advanced computing abilities and connectivity options. These features enable new kinds of mobile services that in turn shape the usage habits of smartphone users. This paper surveyed students’ Smartphone usage and how it affects them. It examines the role which frequent use of Smartphones plays in their studies. Questionnaires were designed and sent out to 240 respondents of the Research Scholars of various departments of Periyar University, Salem. Out of the 240 questionnaires distributed, 237 were completely filled and returned back, giving a return rate of 99%. The data collected were analyzed using frequencies; percentages and graph representations. It was recommended that students should learn to manage their time properly and to promote the learning process.