Hans experienced 16 years in Marketing & Business Planning in Samsung, SeAH Group with background in startup operation. Unlike web pages, mobile app services have a belief that users should implement the information or functions have to go through minimal processes on a limited screen, so I have come to plan directly focusing on user interface (UI) and user experience (UX) design. As a result, it was possible to implement user convenience-oriented functions and services such as Apple Watch One Touch Call Function, NFC Auto Call Tag, and SMS household accounts for the first time in Korea.