zoomed completely out. Developer(s) Microsoft Stable release 9.0   (February 14, 2011 ; 19 months ago  ( 2011-02-14 ) ) Operating system Windows CE , Windows Phone Type Mobile browser License Proprietary Website www.microsoft.com/windowsphone/en-us/features/default.aspx Internet Explorer Mobile (formerly named Pocket Internet Explorer ; commonly abbreviated to IE Mobile ) [ 1 ]