Need help! Android ChatGPT AI for bedridden old person, voice only, no typing

I just bought this, and have it being shipped to a very old bedridden
non-technical almost blind recipient who is many states away in the USA.
https://www.costco.com/Samsung-Galaxy-Tab-A9+-11.0%22-Wi-Fi-Tablet-64GB---Includes-Book-Cover,-Gray.product.1793817.html

I just want help in remotely setting it up for AI to listen and talk.
Verbally.

No typing.
All verbal.

Any advice from someone who has done that?

Apparently chatgpt can talk and listen but I don't know what this means.
https://openai.com/index/chatgpt-can-now-see-hear-and-speak/
"We're rolling out voice and images in ChatGPT to Plus & Enterprise users"

What's a "plus" or "enterprise" user?

What about the other chatgpt AI apps?
https://play.google.com/store/apps/details?id=ai.chat.gpt.app
https://play.google.com/store/apps/details?id=com.tiptop.ai.chat.gpt
https://play.google.com/store/apps/details?id=com.codecandy.aiassistant

Do any of them listen to verbal commands & speak out verbal results?
(no typing!)