The document discusses the history and evolution of smartphone features from their early inception in the 1990s to modern times. It outlines the progression from initial smartphones combining PDAs and mobile phones, to early models in the 2000s from companies like Ericsson, Blackberry, and Apple. The document then proposes a model categorizing smartphone features into assumed, expected, and delighting levels from around 5 years ago. It applies this model to analyze how Samsung has varied features with each new Galaxy S model to meet consumer expectations while delighting users. The document speculates on possible future smartphone technologies such as tricorder devices, retinal scans, universal translators, bendable screens, and all-day battery life.