Windows Phone is a proprietary mobile operating system developed by Microsoft for its smartphones. It was first released in 2010 and the first phones to use Windows Phone were designed by HTC, Dell, Samsung and LG. Windows Phone is the successor to the Windows mobile operating system and replaces traditional Microsoft Windows OS design with a new “Metro” design system user interface.
The Metro's interface of Windows Phone OS consists largely of a “Start screen” made up of “Live Tiles”. These tiles are the links to Windows applications and features that are dynamic and will be updated in real time. Both the Windows mobile OS and Windows Phone are incompatible with each other that is Microsoft doesn't enable smartphones with older Windows Mobile operating system to be upgraded to Windows Phone 7, and the vice versa.
Salient Features of Windows Phone
Windows Phone versions
Windows Phone 7: Windows Phone 7 was released on November 8, 2010 and is the first version of Windows Phone after the Windows mobile operating system. It’s user-friendly and touch-screen UI made it the most widely used smartphones.
Windows Phone 7.5, Mango: The major update to Windows Phone 7 was referred as Tango or Windows Phone 7.5 that was released in May 2011. The update included a mobile version of Internet Explorer 9 that supports the same web standards and graphical capability as the desktop version, multi-tasking of third-party apps and Windows Live SkyDrive access etc.
Windows Phone 7.5, Tango: It is a minor update that was released in 2012. Its features include lowered the hardware requirements, bug fixes and many updated features.
Windows Phone 7.8: Windows Phone 7.8 was released in January 2013. It added some features from Windows Phone 8, such as an updated start screen, doubling of the color scheme option and others. Windows Phone 7.8 was designed to extend the life of older Windows Phone 7 devices, as they could not be upgraded to Windows Phone 8.
Windows Phone 8: On October 29, 2012, Microsoft released Windows Phone 8; it is a new generation of the operating system for mobiles. Windows Phone 8 introduced multi-core processor and multiple screen resolution support, USB Mass storage mode, Bluetooth file transfers, removable memory card support, Kid's Corner, etc. Its architecture is based on the Windows NT kernel that enables many components shared with Windows 8, to allow other applications to be easily ported between the two platforms. Windows Phone 8 devices are HTC 8X, Lumia 920, Lumia 820
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