Julien is blind and he uses an Android phone. It's gotten to the point where it does just as good of a job with accessibility as the iPhone. He recommends a pure Google phone because overlays from companies like HTC get in the way of it. The Nexus phone is the best one for those needing accessibility. Leo also says the Moto-X would be good for that reason as well.
Julien is a trainer for visually impaired people using smartphones, and his website is TechJV.com.