This balanced VisionAware post offers what it claims to offer: "Insights about Using an iPhone: Pros and Cons for Blind and Visually Impaired Users:"
http://www.visionaware.org/blog/visually-impaired-now-what/insights-about-using-an-iphone-pros-and-cons-for-blind-and-visually-impaired-users/12
http://www.visionaware.org/blog/visually-impaired-now-what/insights-about-using-an-iphone-pros-and-cons-for-blind-and-visually-impaired-users/12