The development of sharia banking is interesting to study because it has its
uniqueness and reflects sharia-based activities. Religiosity and service quality as
an assessment and its relation to trust. This study aims to analyze the relationship
of the level of religiosity, service quality to the interests in the decision to use
Islamic banks either directly or mediated by trust.
This research was conducted in Purwokerto, collecting data conducted
with a questionnaire distributed to 120 respondents. The data is processed using
the SPSS 24 program in 2018 and the sobel test. The results of this study can
prove the conclusion of religiosity is not positive and significant to the trust in the
quality of service significantly influences trust; religiosity of significant
importance to shopping decisions; significant quality of service to the outcome of
the decision; Significant trust in approval decisions; Trust does not mediate the
relationship between religiosity towards decisions using Islamic banks; Trust
mediates the relationship between service quality and decisions using Islamic
banks.