Please also solve bonus part.

Due to the rapid spread of mobile applications in banking transactions, the need for customers to perform all their transactions through a single channel has arisen. In this context, the Bank provides its customers with a mobile application, mainly to increase the customer experience. Decided to offer the function of updating the phone numbers registered in the system. Before the development of this function, the process is expected to be analyzed by considering the details given below. Assumptions within the scope of the study: The customer's status is active. The customer has logged into the mobile application. The customer has a phone number registered in the system. The analysis is expected to be prepared with the following 4 solution options, bonus option It will provide plus points for evaluation. 1. Defining User stories 2. Creation of test scenarios 3. Flow chart drawing (optional) 4. Adding mock up screens (optional) Bonus: 1. Adding database and web service detail