Erica Ogg:

Apple sells tens of millions of iPhones every quarter, but its biggest challenge is expanding the reach of the iPhone in markets where smartphones are incredibly expensive and new to a lot of potential customers. At the Dive into Mobile conference on Monday in New York City, two companies represented onstage offered stark examples of how Apple’s model, which it has nearly perfected in established markets, may require some adaptation: China’s high-end handset maker Xiaomi and Brazil-based wireless carrier Movile.

An interesting look at some of the issues Apple faces as it continues to manage product growth in two very different countries with two very different economies.