Smart phones are mobile phones with more advanced computing ability and
connectivity that comprises of functions such as portable media players, low-end
compact digital cameras, pocket video cameras and global positioning system (GPS)iour, Regression navigation units (http://mashable.com/follow/topics/smartphone/). The popular mobile operating systems (OS) installed in the smart phones include Apple’s iOS, Google’s Android, Nokia’s Symbian and RIM’s BlackBerry OS. Smart phones have become necessary for consumers and this has boosted the smart phone demand in the market.