From: http://www.emarketer.com/Article.aspx?R=1007462

From: http://phandroid.com/2010/01/05/android-os-popularity-grows-by-leaps-and-bounds/

• Among respondents who currently own a smart phone, 4% say they’re currently using Google’s Android operating system – a 3-pt jump since our survey in September.
• 21% of those planning to buy a smart phone in the next 90 days say they’d prefer to have the Android OS on their new phone – a monstrous 15-pt jump in just three months.

• Three months ago Android OS was tied for last place in consumer preference among the major mobile operating systems. But since then it has surged into second place ahead of all competitors except the iPhone OS X (28%) – which remains the number one choice for operating systems, although down 4-pts from previously.
• The RIM OS (18%; up 1-pt) is holding steady and the Palm OS/ Web OS (3%) and Windows Mobile (6%) are each down 3-pts since the September survey.

Forty-two percent of respondents now report they own a smart phone – up 3-pts since September.

Going forward, 12.8% of respondents say they plan on buying a smart phone in the next 90 days – the second highest percentage ever recorded in a ChangeWave survey.

From: http://www.changewaveresearch.com/articles/2010/01/smart_phone_20100104.html

From: http://appadvice.com/appnn/2009/12/usage-stats-prove-the-iphone-isnt-just-hype/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+AppAdvice+(AppAdvice)

From: http://appadvice.com/appnn/2009/12/every-other-ipod-touch-runs-an-old-os/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+AppAdvice+(AppAdvice)