Date Added: Oct 2012
New mobile technologies are growing rapidly. Smart phones and iPhones has added new dimensions in the field of mobile technology. It is used not only for conversation but also to carry data. The various features of Smartphone are Wi-Fi, touch-screen, SMS, digital camera, games, various apps, GPS system, mobile browsing, multi-tasking, support for 3rd-party software along with the basic features of mobile phones. These advanced features have also increased the real threat of various malware attacks in mobile phones. This paper focuses on the comparative study of various types of operating system, survey on smart phones and malwares along with the countermeasures to be taken to withstand against these malwares.