The iPhone revolutionized the world for people with disabilities. Nobody (outside Apple) imagined this touch-only phone with no physical buttons would become the defacto device for people with disabilities. In fact, today's smart phones have not only replaced computers, but also expensive dedicated assistive technology equipment.
Make your application accessible
To be accessible, your app's content must be discoverable, actionable, and understandable. All of these depend on management of content focus. Fortunately, the platforms have made this fairly easy. The first step is being aware, that is the first part of this presentation. You will learn how to navigate with a phone's screen reader.
This presentation is available in an accessible version: http://www.last-child.com/focus-mobile-accessibility/