The main objective of the study is to explore the factors of multi SIMs usage in the mobile phone at a time along with users' demographic characteristics. This descriptive analytical research is carried out by a well designed questionnaire to collect the data from 100 students of universities of Sylhet city, Bangladesh. The collected data were duly processed and analyzed by Microsoft Excess 07 and SPSS 19 with the tools of statistical analysis like frequency distribution, cross tabulation and Chi-square analysis. The findings inferred that no single operator is successful in providing full satisfaction to the users in all aspects. The operator of better network is failed to provide satisfaction in cost minimization and value added services and the operator of cost saving leader failed to provide better satisfaction in network performance and slightly lay behind in value added services. The multi SIMs users are mostly satisfied in initial cost to install multi SIM due to low price of SIMs but keep customers indifferent in cost minimization in call and SMS and value added services. The operators are failed to provide satisfaction to most of the users in customer care. The multi SIM users have perception in saving an amount of cost by their activity. The intention to switch to other operators may remind the management in emphasizing on promotional activity and customer care simultaneously