The UML sequence diagram for an Online Banking SMS Customer Service System illustrates the interactions and flow of messages between the user, the SMS gateway, and the customer service system. The diagram begins with the user sending an SMS message to the SMS gateway, which then forwards the message to the customer service system. The customer service system processes the message and sends a response back to the user via the SMS gateway. The diagram also shows the use of authentication and verification processes to ensure the security and privacy of the user's account information. Use EdrawMax to create a similar diagram for your projects. EdrawMax offers a wide range of similar templates that helps beginners and professionals in creating great-looking diagrams.