The government regulation policy, in the mobile phone services market which is characterized by its 'asymmetric' stance, has been provoked debates on many issues amid pros and cons. For that, many previous studies have endeavored to point out the limitations of asymmetric regulations and suggested the improving measure tools, most of previous studies showed common shortcomings. This study aimed at evaluating the government regulation policies over mobile phone market, by analyzing in advance the efficacy of any potential regulation policies, and by estimating the timeliness of the enforcement. To achieve this objective, a simulation model based on the system dynamics methodology was developed to test the impact of governmental regulation policies being enforced under various scenarios of the mix of government policies.