There is no end in sight to the Android versus iPhone debate, but while we can all argue over the pros and cons of each, the numbers don't lie: Android is still the most popular operating system in the world.
According to data from market intelligence firm IDC, Android's dominance in the mobile market is still growing. In 2013, Android devices comprised 78.6% of global smartphone unit shipments — up from 69% in 2012. Compare that to iOS, which made up only 15.2% of smartphone shipments in 2013 (down from 18.7% in 2012).
See also: The Top 10 Android Apps of 2013
The following chart, created by Statista, shows the evolution of the top smartphone operating systems. As you can see, there's no contest.

Image: Statista
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