Metrics on Mobile web usage: who to expect on your site
AdMob released a new metrics report, focused on the usage of mobile web and devices used for accessing the mobile web:
April 2009 Mobile Metrics Report - Mobile Web vs. HTML
HTML usage means mobile devices visiting normal desktop websites, while Mobile Web means visiting mobile optimized websites (e.g. http://m.mobiledrupal.com).
The conclusions are interesting enough to put them on my blog and not bore you with nonr-relevant statistics :)

First of all device market share is not in line with usage of the mobile web: iPhone and Android owners surf the mobile web...
"The iPhone OS had 8% market share of handset sales in 2008, but generated 43% share of mobile Web requests in April 2009."
"Android also generated a higher percentage of mobile Web requests than its share of handsets sold. While Android had less than 1% of smartphones sold in 2008, it generated 3% of mobile Web usage."
For symbian:
"The Symbian OS had 52% market share of handset sales, but generated only 36% share of mobile Web requests in April 2009."
The summary:

The report further shows that the iPhone has a high "full web" usage where Sybmian devices almost never visit the "full web"

This and more data can be found on their complete report

