Purpose: The purpose of this research was to investigate the 
prediction of cell phone addiction based on metadiagnostic 
factors (emotional dysregulation, metacognitive beliefs and 
uncertainty intolerance) and anxiety.
Materials and methods: The research method is quantitative 
and correlational. The statistical population of the research 
was all male students of the second year of high school in 
Tehran in the academic year of 2019-2019, numbering 
125,110 people. The sample size of 400 of these people was 
selected based on Klein's model (2016) and the available nonrandom sampling method and the Mobile Phone Addiction 
Questionnaire (MPAQ) Sawari (2013), the Emotional 
Dysregulation Scale (DERS) Gratz and Romer (2004), 
Metacognitive Belief Questionnaire (MCQ) by CartwrightHoughton and Wells (1997), Intolerance of Uncertainty Scale 
(IUS-27) by Friston et al. (1994) and Beck Anxiety Inventory 
(BAI) by Beck et al. (1988) answered . The data were analyzed 
with Pearson's correlation coefficient and multivariate 
regression using SPSS version 24 software.
Findings: The results showed that there is a significant 
relationship between emotional dysregulation, metacognitive 
beliefs, uncertainty intolerance and anxiety with cell phone 
addiction (P<0.01). Also, the results of multivariate regression 
analysis revealed that 72.4% of the variance of phone 
addiction is explained by metadiagnostic factors (emotional 
dysregulation, metacognitive beliefs, and uncertainty 
intolerance) and anxiety.
Conclusion: The findings of this research show that emotional 
dysregulation, metacognitive beliefs, intolerance of 
uncertainty and anxiety play an important role in predicting 
mobile phone addiction in second year high school male 
students.