(Since its debut in 2008, Android has become the third largest smartphone platform in the world in just two years. The smartphone platform competition is getting hotter and hotter. Users and businesses are focusing on iOS and Android phones. The Windows Mobile phone, which was once unimportant in the smartphone field, is now rarely mentioned. Even Microsoft is making every effort to prepare for the launch of Windows Phone 7 system. This document includes the following annexes:)
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