COVID-19 pandemic has affected all types of business functions. Due to lock down during COVID-19 pandemic situation all bank branches were closed. People were forced to stay home and allowed to work from home. This situation lead to changes in the way of living in people’s life. In banking sector Mobile Banking technology has been adopted to provide banking services, which facilitate their customers to avail-banking services from anywhere at any time. However, people were not more in the usage of these services. COVID-19 situation forced customers to use Mobile Banking services in a increasing manner for various purposes specifically among existing users. Along with that, New Mobile banking registration has increased during the lockdown period. Previously, customers were using mobile banking services only for checking accounts but know they also use for making payments, fund transfer, recharge etc., This paper studies an impact of COVID-19 pandemic situation on Banking Customers in usage of Mobile Banking services among customers of Mangalore region. To study how mobile banking applications is boon to customers during COVID-19 pandemic situation.