From: John Navas on
<http://mobile.informationweek.com/10243/show/fd160db937a2b58b1cafa646eccce0eb/>:

The Apple iPhone accounts for the majority of Web activity from mobile
devices, but its share is shrinking as the popularity of smartphones
built with Google's Android operating system grows, an online tracking
firm reports.

The iPhone accounted for 58.8% of mobile Web usage at the end of May,
compared to 19.9% for Android phones and 10.4% for Research in Motion's
BlackBerry, Quantcast reported Monday. While those numbers favor Apple,
the trend over the last 12 months do not.

Compared to the same month a year ago, the iPhone's share in Web usage
fell 8.1%, while Android Phones' share rose 12.2%. RIM's share fell
1.2%.

In the three-month period ending in May, the iPhone's share fell 4.7%,
while Android phones saw 4.6% more Web activity and RIM 1.3%. Month to
month, the trend was the same with the iPhone losing a 0.9% share while
Android phones' share rose 1.3%. BlackBerry's share dipped 0.1%.

Part of the reason for the iPhone's drop in share is the rising
popularity of Motorola's Droid on the network of Verizon Wireless, the
nation's largest mobile carrier. AT&T is the exclusive carrier for the
iPhone in the U.S.

"Look back over the past year it's clear that most of Apple's share loss
has come at the expense of Motorola," Quantcast said.

Besides Motorola, Apple is also facing stiffer competition from
smartphone maker HTC, which makes the Incredible offered by Verizon and
the Evo 4G, recently released on Sprint.

Apple last week introduced the iPhone 4, which is more powerful and
sports a higher resolution display than current models. While the new
model is expected to boost sales of the smartphone line, it doesn't
address one of Apple's biggest headaches: AT&T.

The carrier has been criticized for providing poor voice and data
service for the iPhone in cities with high concentrations of the
smartphone, such as San Francisco and New York. To try to cope with the
bandwidth-hungry devices, AT&T this month stopped offering unlimited
data plans for new iPhone customers, in favor of plans with monthly data
limits.