Android 4.0 Ice Cream Sandwich was publicly released on October 19, 2011, with the source code for the OS becoming public on November 14, 2011. The Android 4.0 was an upgrade to the leading 2.3 Gingerbread and...

Windows Phone 7 is not exactly an upgrade of Windows Mobile 6.5; it is a completely revamped and new operating system. Windows Phone 7 is built on a different kernel from the Windows Mobile and is not backward...

Windows Phone 7.8 is an upgrade on the Windows Phone 7 OS series and available on Windows Phone 7.5. The Windows Phone 7.8 upgrade was released as Windows Phone 7 and 7.5 is unable to upgrade to the Windows 8...

Windows Phone 7.5 is an update on the Windows Phone 7 operating system and was announced at the 2011 Mobile World Congress. The update was aimed at addressing the problems and the shortcomings of the Windows...

Windows Mobile 6.5 was introduced initially as a stopgap update to the Windows Mobile 6.1 operating system. This update was intended to reduce the gap between the 6.1 OS and the 7 OS, making it easier to shift...