In pictures: The 20 greatest milestones of Android...
Google shows off Ice Cream Sandwich (October 19, 2011)
Android 4.0 Ice Cream Sandwich gives the operating system a major makeover, bringing many elements from Honeycomb to smartphones. This version of the OS includes a number of new features including Android Beam, panoramic photos, and the ability to unlock your phone using your face.
In pictures: The 20 greatest milestones of Android's first five years