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)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.
With the popularity and functions offered in the smart phones, there has been an
increase in demand (Park and Chen, 2007). According to Smura et al. (2009), in most
developed countries, mobile phone have become an inseparable part of everyday life
and a majority of people carry them all the time.