Smart phone Mobile Apps! Just like the accessibility of airplane travel for the masses revolutionalized the travel industry, smart phones will revolutionalize the retail industry. Although I may use hyberbole on occasion (but only to make a point), this is not one of those times. They will truly change the industry as we know it. 2011 will be the tipping point — the point where the line on the penetration chart crosses over. More than 50% of cell phones in the United States will be smart phones versus functional phones, according to Nielsen.