"iPhone accessibility with VoiceOver This page contains links to information about using the iPhone 3GS with its built-in screen reader VoiceOver, a huge step for eyes-free mobile accessibility. This is a wiki, please feel free to add more links and content. Don't know how?"
The iPhone 3GS, which has no physical keys at all, is one of the easiest smartphones in the world for a blind person to use, thanks to an app called VoiceOver.