With the advances being made in digital information device multifunctionality and networking in recent years, there has been a tendency for users not to understand how to use such devices and thus under-utilize their functionality, as typically seen with mobile phones[1-5]. One factor contributing to this problem is user manuals, which usually cout around 800 pages in the case of mobile phones in Japan, are not adequately serving their purpose. We have proposed a new system for the ideal next-generation mobile phone manual. We focused on users’ experiences operating mobile phones. We first built a rule base for filtering manual information that was extracted based on users’ experiences operating mobile phones, and then by crosschecking the latest operation log entry with the rule base whenever a user encounters a problem, the system is able to instantly provide onscreen information to assist the user with the necessary operation for the current context. As for the system’s core functionality, namely its realtime advice function and step-up advice function, we have already conducted tests proving its effectiveness through computer simulations tar
