adeelarshad82 writes "Microsoft officially unveiled its Windows Phone 7 mobile operating system, announcing that it will be available on a total of five devices in the US. Windows Phone 7 handsets from AT&T and T-Mobile will begin shipping in November, while devices from Sprint and Verizon will be available next year. In all, Microsoft announced nine Windows Phone 7 phones, the remainder of which will be available in Canada, Mexico, the UK, Germany, France, Spain, Italy, Singapore, and Australia. It will debut in some European markets on Oct. 21. While early signs are encouraging for Windows Phone 7, it is being deemed as do or die for the future of Microsoft's business."
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