My husband more or less refuses to use a mobile phone, but we got him a Doro: very basic phone with big buttons. Have to remind him how to switch it on, on the rare occasions that he uses it, and what to do if a call comes in.
No chance of him sending a text as it means using the keypad where each number can represent 3 different letters according to how many times you press the button!
I am currently trying to get to grips with using Relay, as my hearing is now so bad that I can't really do ordinary phone calls: with that you get the option to type what you want to say and receive as text. But that's a UK system: not sure if you have similar in the USA, Leeneia.