Smartphones are not about phones alone, it is largely about the application market and a recent study shows that the app market has reached 2.2 billion USD worldwide (H1, 2010).
“The worldwide smartphone applications market grew more than $2.2 billion dollars within the first six months of 2010. Mobile application download numbers reached a total of 3.8 billion in only 6 months, compared to 3.1 billion in 2009. Interesting to note that the average application prices steeped to $3.60 US per paid application in the first half of 2010.”
Global mobile smartphone application market 2010

We earlier shared a report on the Most Preferred Mobile App Development Platform and a notable point was around the great divide between apps vs the device’s installed base, i.e. the platform with highest number of apps is among the one with least installed base.

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While Android stands out as the platform most popular with mobile developers, Apple (iOS) is the one that brings in moolahs.
What about Symbian/Meego/Samsung Bada? Please share your experience.