Mauritius has a growing senior population with low usage of smartphones due to poor digital literacy, affecting their ability to use mobile payment services. This situation creates a barrier to financial well-being and the achievement of the goals pertaining to Society 5.0. The research aims to evaluate senior citizens’ smartphone literacy skills with respect to adopting mobile payment services as a strategy toward financial well-being in Mauritian society. The research adopted a quantitative approach through which questionnaires are used to collect data from 89 senior citizens. To assess senior citizens’ smartphone literacy skills, Everyday Digital Literacy Questionnaire (EDLQ) was modified and adapted to the study, and factors related to financial well-being were captured using the Consumer Financial Protection Bureau (CFPB) Financial Well-Being Scale. A chi-square test reported five demographic attributes, namely gender, age group, residence type, working status, and technology-related profession show an insignificant association with smartphone literacy skills. In contrast, three attributes, namely education, marital status, and type of industry involved prompted a significant association. A mean statistics revealed a low level of consensus among eleven out of twenty-one statements evaluating smartphone literacy skills. A Pearson Correlation and a Multiple Linear Regression validated that senior citizens’ smartphone literacy significantly influences financial well-being in the society. Future research is recommended to explore approaches to promote the adoption of mobile payment for financial inclusion of the senior citizens thus supporting the human-centered environment in Mauritius.