Today the world is moving towards mobility and we think all of us have smartphones in our hands as well as in our lives. According to a survey more than two/third of the Americans own smartphones in 2013. The smartphones are also seen as replacement for the computers and laptops. The features of these smartphones are the operating system they have or the applications they support. As we all know the four major mobile operating systems present are:-iOS, Android, Windows and Blackberry. The first

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... two owns upto 92% of the total smartphone market share. With the increase in the demand and use of the smartphones security concern is a major issue now a days.