Apple iOS devices are arguably the most popular mobile devices used by those with visual impairments. Accordingly, the greatest number of third-party resources devoted to teaching mobile accessibility feature this platform.
Apple
Apple includes a tutorial information in the VoiceOver area of the accessibility settings on their phones. They also maintain a special support department exclusively for users of their accessibility products. You can reach Apple via e-mail. In the US you can also reach them by phone at 877-204-3930.
In addition, there is a wealth of accessibility information and resources on the Apple accessibility website.
eBooks
Now that you've had just a tiny taste of what's possible with iOS, consider obtaining one of these three eBooks so you can learn even more about using iOS with VoiceOver.
iOS Access for All: Your comprehensive guide to accessibility for iPad, iPhone, and iPod Touch, by Shelly Brisbin (also covers low-vision iOS settings)
Available for $20 in ePub and accessible PDF formats from iOSAccessBook.com.
iOS 7 Without the Eye, by Jonathan Mosen
Available for $19.95 in ePub, accessible PDF, and RTF formats from Mosen.org.
Getting Started with the iPhone and iOS 7:An Introduction for Blind Users, by Anna Dresner
Available for $12 in eText, braille download, MS Word, and other accessible formats from The National Braille Press.
Online Lessons
VoiceOver-Easy.net offers detailed, step-by-step tutorials for blind and visually impaired individuals who wish to learn how to use VoiceOver on an iPhone or iPad.
Websites
AppleVis and
http://maccessibility.net/
are just two of the many websites that offer users of Apple accessibility products a place to gather, ask questions, and share information about using their iPhone or iPad with Zoom or VoiceOver.
Videos
The Hadley School for the Blind
Definitely start your video search at the Hadley School for the Blind. Their iFocus video series focuses on tips and Training for iDevice Users from beginner to advanced.
YouTube
Believe it or not, YouTube is a veritable treasure trove of information about using an iPhone or iPad with accessibility. Search for things like "VoiceOver for iPhone demo," "browsing the Web with VoiceOver," "Using Zoom with your iPad," and other similar and you will be amazed by the quantity, quality, and "listenability" of the results.