What does ice cream sandwich mean when it has to do with smart phones
When referring to smart phone, ice cream sandwich is an update for the android operating system. The update was released shortly before the release of the Galaxy Nexus into the market. Check out http://en.wikipedia.org/wiki/Android_%28operating_system%29#Applications for more on details.
It's an updated version of the Google's Android operating system. It will be used in both smartphones and tablets.