Microsoft to unveil Windows Phone 8.1 update this spring

Microsoft has reportedly detailed a few features of its upcoming Windows phone, even as it refrained from specifying it as "Windows Phone 8.1".Joe Belfiore, the corporate vice president of Microsoft Windows Phone, said that the company would technically support all existing Windows Phone 8 devices.While Microsoft is only saying spring for this Windows Phone update, the company will support on-screen buttons with Windows Phone 8.1, alongside new hardware support for Snapdragon 200, 400, and 400 LTE chipsets, the Verge reported.Meanwhile, it is also reported that the Windows Phone 8.1 will have a dual-SIM support.