What's Not Possible with Simulators
Telephony linksYou cannot test links that dial a handset to a phone number.
Email linksYou cannot test links that open a new email message.
Change user agentThe user agent is generally fixed, which limits your ability to tailor content to individual handset screens.
Download multimedia contentRingtones multimedia formats, such as ringtones, cannot be previewed in simulators.
Access official i-mode sitesMobile sites on the official i-mode menu cannot be accessed from simulators.
The most important thing to remember is that an i-mode simulator is only a tool to give you a general idea of how your pages will be displayed in a handset screen. However, it is not a substitute for viewing the pages in a real i-mode handset. In fact, you will have to test your applications in a variety of handsets because there are differences not only in the screen size and color depth, but also in the microbrowsers available for i-mode handsets.