This is the presentation and note for Mobile HCI 2008 in Amsterdam, Netherlands. The talk is based on the project to evolve Contacts application on Nokia smartphones, 2005. You can download the original published paper from the following links: http://younghee.com/wp-content/uploads/2008/06/mobilehci08_ic008_futureofcontacts1.pdf http://portal.acm.org/citation.cfm?id=1409240.1409311
