Fetching Address Book Info of iPhone OS

With the rapid development of mobile technology, the mobile phones has gradually become an indispensable part in everybody's life, and it is replacing the computer's position step by step. The iPhone is a smart phone made of Apple Company, which opens a new era of software for mobile devices. At the same time, iOS(iPhone's operating system) has become one of most competitive mobile communications operating systems. The Apple's protection for security makes the iPhone owners hardly control their phone through the root (highest authority). It is so difficult to manage the information effetely with iPhone, such as contacts' information or SMS. The paper introduced two approaches to get the contacts' information in iPhone and restore them with vCard. At last, we managed the output file on MAC.