The latest Mobile Metrics report from AdMob (reflecting usage across its network) features a comparison of smartphone handset share vs mobile Internet browsing and usage. Here are the top-level data:
In other words, the iPhone and Android represent much more mobile Internet activity on the AdMob network than their respective handset shares, while Symbian, RIM, and Windows Mobile under-index relative to their shares in the handset market.
Here are some of the charts in the report:
The following includes HTML browsing (per Net Applications) from mobile handsets:
Putting aside the specific definitions of the categories in the chart above (Mobile Web vs. HTML), we can see how users are interacting with their devices and the mobile Internet. Clearly iPhone and Android owners are more engaged vs others. Some of this is self-selection and some of this is about the usability of the Internet on these devices. As an aside, it would be interesting to see the Storm broken out within the BlackBerry data to determine whether that device in particular was showing usage patterns different than other RIM handsets.
While the AdMob network is not synonymous with the mobile Internet it is directionally consistent with usage trends more broadly.