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worldwide smartphone market is forecast to grow 55 percent year over year in
2011 as a growing number of users turn in their feature phones for more
advanced devices. According to the IDC Worldwide Quarterly Mobile Phone
Tracker, vendors will ship a total of 472 million smartphones in 2011 compared with
roughly 305 million units shipped in 2010. That figure will nearly double to
982 million by the end of 2015, the report said.

report noted the fast-growing smartphone market, which will grow more than four
times the rate of the overall mobile phone market this year, is being fueled by
falling average selling prices, increased phone functionality and lower-cost
data plans, among other factors, which make the devices more accessible to a
wider range of users.

smartphone floodgates are open wide," said Kevin Restivo, senior research
analyst with IDC’s Worldwide Quarterly Mobile Phone Tracker. "Mobile phone
users around the world are turning in their ‘talk-and-text’ devices for
smartphones as these devices allow users to perform daily tasks like shopping
and banking from anywhere. The growth trend is particularly pronounced in
emerging markets where adoption is still in its early days. As a result, the
growth in regions such as Asia/Pacific and Latin America will be dramatic over
the coming years."

expects Android, which passed Symbian as the leading operating system worldwide
in Q4 2010, to grow to more than 40 percent of the market in the second half of
2011. A significant and growing list of vendors that have made Android the
cornerstone of their respective smartphone strategies is propelling the growth
of Android, the report said.

smartphone growth is the rapidly shifting operating system landscape," said
Ramon Llamas, senior research analyst with IDC’s mobile phone technology and
trends team. "End users are becoming more sophisticated about what kinds
of experiences are offered by the different operating systems. Taking this as
their cue, operating system developers will strive for more intuitive and
seamless experiences, but will also look to differentiate themselves along key
features and characteristics."

will steadily lose share throughout the forecast period as its biggest
supporter Nokia transitions its smartphone strategy to Windows Phone. This will
present a “huge opportunity” for competing operating systems to gain footing.
Still, Nokia’s commitment to support Symbian devices until 2016 will keep the
installed base of Symbian-powered smartphone users on par with its competitors,
IDC research said.

Phone 7/Windows Mobile will benefit from Nokia’s support, scope, and breadth
within markets where Nokia has historically had a strong presence. Until Nokia
begins introducing Windows Phone-powered smartphones in large volumes in 2012,
Windows Phone 7/Windows Mobile will only capture a small share of the market as
the release of Mango-powered smartphones are not expected to reach the market
until late 2011,” the report noted. “Nevertheless, assuming that Nokia’s
transition to Windows Phone goes smoothly, the OS is expected to defend a
number two rank and more than 20 percent share in 2015.”

iOS was the third-ranked OS going into 2011 and is expected to remain a force
in the mobile phone market throughout the forecast. After an initial explosive
growth period, iOS is expected to grow at a more modest pace throughout the
latter half of the forecast as the smartphone market matures and diversifies.
Although a small market share decline is expected, IDC said it expects
significant overall shipment volume growth through the end of 2015.