Apple's iPhone and Android-based smartphones have both seen solid growth throughout the world this year, says a report released Wednesday by AdMob.
The iPhone's worldwide market share jumped from 33 percent to 40 percent over February to August, according to AdMob's "August Mobile Metrics Report," which tracked smartphone usage for that six-month period. AdMob, which serves ads for mobile Web sites and apps, bases its numbers on data from ad requests, impressions, and clicks.
Phones running Google's Android OS picked up a 7 percent market share by August versus only 2 percent in February, thanks to rapid gains in North America and Western Europe, said AdMob. Since its debut this summer, T-Mobile's Android-powered MyTouch has been a top seller in both of those regions.
With the launch of the Pre, Palm's WebOS has also taken off, grabbing a 4 percent slice of the smartphone market in August.
On the downside, older smartphone systems have witnessed a drop in market share, according to AdMob.
The global share for Nokia's Symbian OS fell from 43 percent in February to 34 percent in August. However, Nokia smartphones remain hot sellers, accounting for 12 of the top 20 smartphones tracked by AdMob. Nokia's N97 and 5800 XpressMusic units were the fourth and fifth most popular smartphones in the U.K. for August.
Research In Motion's slice of the market dropped slightly from 10 percent in February to 8 percent in August. Still, RIM's Blackberry devices accounted for three of the top 20 smartphones around the world. The Palm OS, running on older units such as the Centro, declined in share from 3 percent in February to 1 percent in August.
Finally, Microsoft's Windows Mobile also lost share, falling from 7 percent in February to 4 percent in August, according to the report.
AdMob sells and tracks ads on mobile Web pages and applications to more than 7,000 publishers. The company compiled the data for this report based on its analysis of more than 10 billion monthly ad requests from over 160 different countries.