Michele, it would seem to me that having both would be beneficial. I live in Alabama, and our Senior Center here has a few computers, and they have classes to help seniors learn basic computer use. I would think that this would be necessary to help people that are first learning how to use either a computer or a smartphone.
Once the person was proficient in basic computer uage, then just having a place online where they could have questions answered would be a great help.
Maybe some basic online tutorials that people could watch, and someone to work on chat lines, like many companies provide for shoppers nowdays. Comcast has a similar thing, where you can go to their webpage , sign in, and then chat with a service person about what the issue is.
Of course, they only deal with issues with your internet or cable tv service; but I think that this would also work for someone who juat had a question about their tablet, computer, or smartphone.
I am fortunate that i have my daughter to help me when I can't figure something out. She does require that I have at least googled the problem and tried to figure it out on my own first, and then (just before I pull out all of my hair), my Guruette will tell me how to fix it, or show me when I see her.
Hopefully, this is the kind of answers you are looking for for your study ??