They estimate that full-year 2015 smartphone shipments in India would reach 103.6 million units, or a 28.8% increase over the year prior.According to eMarketer, IDC suggests that a number of market changes in India are contributing to the growing demand, but perhaps the most important factor is the rise of mobile phone users in India, who are upgrading their current feature phones to smartphones.With only around 30% of mobile customers in India using smartphones in a nation of 1.2 billion people, there are tremendous opportunities (and challenges) for businesses to break into the Indian market.In an increasingly saturated smartphone market in North American and European markets, opportunities to acquire new smartphone (and app) customers are becoming more competitive.App developers, smartphone manufacturers, and advertisers should therefore investigate opportunities in India and other emerging markets. With 70% of the world’s population expected to be using smartphones by 2020, emerging markets provide a new frontier for ongoing growth.