However, all of these new smartphone releases, firmware updates, and mobile OS progressions can make it difficult to decide which phone is best for you.

然而，所有发布的智能手机中，固件更新、手机操作系统进展使你很难决定哪款手机最适合你。

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The Mango update of the Windows Phone (WP) 7 mobile OS announced in May is not publicly available but it can be downloaded by developers and flashed onto unlocked WP7 devices.

五月份宣布的Windows Phone (WP) 7移动操作系统的“芒果”更新还没公开发行，但开发者可以下载并刷到解锁的WP7设备了。

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One of Stephen Elop’s biggest moves after being tapped as CEO of Nokia was to dump its Symbian mobile operating system for Microsoft’s Windows Phone OS.

在成为诺基亚的CEO之后，斯蒂芬·埃洛普现在又使出一记狠招，与微软合作，使用Windows Phone 手机操作系统替代自家的塞班系统。

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Microsoft had a mobile phone OS in 2003, and you could purchase applications for it.

FORBES: Microsoft Win8 Tablet Is NOT a Game Changer

Then there are the more or less shadowy plans by members of the Big Five currently without a mobile phone OS to their name.

FORBES: Pretenders To The Phone Throne - Ubuntu To Take On iOS and Android. And Windows Phone. And Sailfish. And Tizen. And...

The biggest phone we can see of this baker's dozen of a lineup is the HTC Gold ( sound familiar?), due in November and loaded with Microsoft's mobile OS newcomer Windows Phone 7.

ENGADGET: HTC Gold with Windows Phone 7 in November, and more from a rumored UK roadmap leak