First of all, many thanks for the great summary. This saves my time on mobile market research.

I think that what Patrick was referring to is smartphone OS share among smartphone subscribers in US. According to comScore MobileLens, smartphone OS share of 3-month average ending September 2010 was the following and there were 58.7MM smartphone subscribers in US. So, you can estimate the number of users of each OS as follows:

Smartphone OS share (# users inMM)
RIM 37.3% (21.9)
Apple 24.3% (14.3)
Google 21.4% (12.6)
Microsoft 10.0% ( 5.9)
Palm 4.2% ( 2.5)

Google's share is growing in a fast pace after introduction of Android. Google is eating share of RIM and Microsoft. Considering that Android users are more likely PC users, this trend is understandable.

comScore MobileLens reports are issued quarterly. For the digest of the latest report, go to:

http://www.comscore.com/Press_Events/Press_Releases/2010/7/comScore_Repo...

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