[mltony]

My two cents: learn VoiceOver for iPhone yourself, turn on screen curtain for further realism, and spend tons of time with your relative practicing simple things. I am blind and a couple of years ago I was trying to help a friend to learn VoiceOver - the friend wasn't that tech savvy, and it turns out that even simple concepts like swipe left or two fingers double tap present some difficulty to them. So have a lot of patience, but in the end if they can learn to use apps like Mail or Audible independently - that would be a very rewarding experience.