How can I do remote access via voice dictation?

Episode 1233 (2:26:19)

Richard from Youngstown, OH
Apple iPhone 6s and 6s Plus

Richard is visually impaired and bought the iPhone 6s Plus. Richard's friend is hearing impaired and he wants to know if she could use her iPad as a kind of stop gap hearing aid or screen reader? Leo says that using dictation mode with Siri would do it. Google has a good voice dictation mode as well. But if he's talking about remote access via voice, that would be a challenge. But maybe Richard should learn to write apps and create it!