PurposeThis study evaluates the integrative role of justice theory, religiosity, satisfaction and trust in influencing customer loyalty to Islamic mobile banking.Design/methodology/approachThis study surveyed 370 customers who used Islamic mobile banking. The authors employed SEM-PLS to estimate the proposed model and answer the hypotheses.FindingsEmpirical facts show that distributive justice, procedural justice and interactional justice can increase loyalty through the role of satisfaction. On the other hand, distributive justice, procedural justice and religiosity can predict loyalty through the role of trust.Practical implicationsThis study encourages Islamic mobile banking providers to improve the quality of benefit distribution, the application of procedures and interaction among all levels of users. In addition, religious education innovation is also important to increase customer activity in using Islamic mobile banking.Originality/valueUntil now, none of the studies have estimated the loyalty of Islamic mobile banking users based on the integrative roles of justice theory, religiosity, satisfaction and trust. It, therefore, highlights the originality of this study.