An uncommon study from Stenvall Sköld & Company has shown that much of Apple's mobile device share in China is disproportionately located in its urban areas. Based both on its own device analysis and research from local firm Umeng, it saw the distribution of 21 million iOS devices understandably skewed towards those provinces with the most urbanized populations. The highest concentration at 13.4 percent wasn't in one of the biggest cities but instead Guangdong province, home to Shenzhen and the Foxconn plants that make most of the iPads and iPhones for the world.