I have Angular UI code which doesn't have any kind of backend as of now.
1. Login /Authentication using mobile number and otp
2. Once login successfully it should create a new profile for first time user with following details username, mobile number, upiId, email id(optional) etc details
[login to view URL] feature to add/ withdraw money
4. Payment interface to add/withdarw money from/to UPI/Paytm/Phonepe/Gpay
5. Transaction history