Mr. Yang and Ms. Wang were the latest witnesses Samsung called as it attempts to both prove that Apple infringed its patents and defend against the Cupertino company's claims that it had done the same.
Research in Motion's BlackBerry is also a challenger to the iPhone, which Apple CEO SteveJobsSteve Jobs called out in theApple earnings conference call last week, saying that it had undersold the iPhone's 14.1 million this quarter by two million.