The COVID-19 pandemic has had a substantial influence on daily life, the global economy, and the financial industry in particular. Lockdown measures implemented to stop the disease's spread have also had an impact. The reasons influencing the uptake of mobile banking, particularly during and after the COVID-19 pandemic, have been well studied. Additionally, the study will look at how much these internet purchases have aided during the Covid-19 pandemic. Thus the aim of the current research is to identify the change in perception of customers in usage of mobile banking in India during Pre – COVID and Post – COVID. For this study a total of 200 respondents at Chennai city were surveyed using electronic questionnaire. This study is based on quantitative analysis using primary data. The Wilcoxon signed rank test correlation analysis has been used for analysis. This research is to identify that the awareness on mobile banking is increasing or decreasing and their adaptive behavior to use mobile banking.