Android 4.0 "Ice Cream Sandwich" is a version of the
Android mobile operating system developed by
Google. Unveiled on October 19, 2011, Android 4.0 builds upon the significant changes made by the tablet-only release
Android 3.0 "Honeycomb", in an effort to create a unified platform for both
smartphones and
tablets, whilst simplifying and modernizing the overall Android experience around a new set of
human interface guidelines. As part of these efforts, Android 4.0 introduced a new visual appearance codenamed "Holo", which is built around a cleaner, minimalistic design, and a new default
typeface named
Roboto.