What is Windows Phone OS?
Windows Phone OS is an exclusive mobile operating system which was developed by Microsoft. They introduced a design language called Metro UI but later changed it and named is Modern.
The software is licensed to third-party hardware manufacturers keeping a strict list of the lowest requirements for the hardware it runs on, ensuring only the best experience for the user.
Nokia announced in 2011 that they had selected Windows Phone OS for all their smartphones.
Windows Phone 7 was first announced in February 2010 and first launched later in the year in October.
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