The growth of internet penetration and advancement of technology has made smartphones and tablets accessible to the majority of the Malaysian population. Mobile banking services using smartphone and tablet applications have grown in tandem with internet and smartphone growth globally. Despite the growth trend in mobile banking customers, some consumers are not adopting mobile banking as their primary banking platform due to customer satisfaction factors affecting them. There are multiple factors affecting customers' satisfaction in using mobile banking; and this research examines the relationship of security, customer loyalty, service quality and convenience towards customer satisfaction in using mobile banking. A questionnaire was used to collect data from the respondents. 400 sets of survey questionnaires which consist of 33 questions were constructed, distributed, and collected from the respondents in Ipoh, Perak. It can be concluded that there is a positive relationship between the four independent variables (Security, Customer Loyalty, Service Quality and Convenience) with the dependent variables, Customer Satisfaction towards mobile banking which is consistent with the hypotheses developed.