Aim: To investigate the relationship between addiction to mobile and anxiety, depression and stress among students of Birjand Islamic Azad University.

Methods: The present study is a correlative one and the statistical population consisted of all students in Birjand Islamic Azad University in the academic year 2014-2015, and according to information received from the University, the number of them is 6450 individuals that 209 of them were randomly selected as the sample size. Of this sample,133 individuals were men and 76 were women. The tool to collect data was the questionnaire of mobile addiction, depression, anxiety and stress. To analyze the data at descriptive section, tables and graphs of frequency distribution, mean and standard deviation, and at analytical section, the Pearson correlation coefficient and regression were used.

Results: The results of this study showed that there is a significant positive relationship between anxiety, depression and stress, and mobile addiction. The results also showed that mobile addiction can predict the depression variable up to 14%, the anxiety variable up to 15%, and stress variable up to 20%.

Conclusion: Addiction to mobile can reduce the psychological status that can have destructive cultural and psychological effects in long run; therefore, it is necessary to plan the training appropriately in order the correct culture for using mobile is created in society.

Keywords: mobile addiction, anxiety, depression, stress