May I suggest prior to giving him the gift that you check out youtube (there are dozens of videos) and insert search terms like blind iphone or blind ipad or voiceover iphone (voiceover is the replacement accessibility option that uses the iphone or ipad in slightly different ways in order for the blind to operate it).
Understand the basic concept prior to buying it for your father.
Then head over to reddit, this forum, or another specifically looking for a few apps for the blind to do what you are wanting to do with the radio and such. Feel comfortable setting this stuff up for your father and showing him how to do it 3 or 4 times prior to giving your father this gift. This is because it is harder to "play" and figure things out if you are visually impaired, and it is not like you can read instructions visually. (Though your father can do so once he gets his iphone set up with that feature for the blind.)
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And also while at youtube google Toph and Blind. Toph is a character from Avatar the Last Airbender a cartoon meant for young adults, she is blind (yet a badass) and there are some good jokes in there on how our society just assumes everything should function but we forget that if you are visually impaired you can't do things THAT way, even if you are an extremely capable individual. Oh Toph is aware of where people are standing and some other location based things via a form of sensory perception based on standing on the ground, aka she is blind but she has a more limited form of "daredevil vision."