If you are of a mind to snap up one of the new smartphones that pack the latest operating system from Microsoft, namely Windows Phone 7, what you probably need is an in-depth look at the new OS before making up your mind whether to go with the device right?

Well Joshua Topolsky of Engadget has done the deed and taken a long look into the Windows Phone 7 operating system in a lengthy review including a couple of videos which you can view by hitting up their website.

I’ll quickly outline part their review for you here and if you wish to read it in its entirety then hit up Engadget, but after please come back and let us know your views on Microsoft’s Windows Phone 7 by posting a comment in our comments area below.

Joshua says that they are “extremely impressed” at the speed and touch responsiveness of the OS, and fairly stunning in how much work Microsoft has put into the user experience. Navigating the operating system basically comes down to 3 sections, homepage ‘tiles’, hub pages and apps list.

Navigation of the Windows Phone 7 UI overall is quite intuitive even though several in-app menus and options are only accessible via long-press, which sort of acts like a “skeleton key” to the operating system basically needing to try it to find out what functionality long-press unlocks.

Like I said earlier, Joshua’s review is quite lengthy and includes coverage of Windows Phone 7 keyboard, contact management and social networking, messaging and email, SMS, browser, sync and Zune, photo management and camera, the Marketplace, Office, Xbox Live, Maps, Search, and 3rd-party apps.

Basically just about everything you need to know about Microsoft Windows Phone 7, so if you have some time on your hands go check out the in-depth review.