iPhone 3G S Accessibility Page
Accessibility comes standard on iPhone 3G S. From closed captioning to TTY support, Apple builds accessibility right into the iPhone operating system. And innovative new features on iPhone 3G S take accessibility a step further, right out of the box: http://www.apple.com/iphone/iphone-3g-s/accessibility.html
Vision: More detailed information on iPhone and Accessibility
The revolutionary iPhone also includes an equally revolutionary screen reader, and other innovative accessibility features that make it easier to use for those with impaired vision: http://www.apple.com/accessibility/iphone/vision.html
Hearing: More detailed information on iPhone and Accessibility
iPhone User Guide In Accessible HTML
The iPhone User Guide is provided online in HTML format designed with accessibility in mind. You can read the guide using your favorite screen reader and web browser on your Mac and PC, and using Safari on iPhone with VoiceOver: http://help.apple.com/iphone/