Do you own a smart phone? Do you find the user interface "too modern"? What do you suggest as input instead of a touch screen?
No; a smart phone would be useless as I am deaf.
Smartphones are perfect for deaf people. You can do text messages with them...
I send/receive text messages with my phone.
If you give people/companies a phone number, they tend to presume they can contact you on the phone. That's perfectly reasonable, of course.
As a deaf person I would be lost without my smart phone. There is, of course, the text but 'smart' doesn't have any bearing whatsoever on one's hearing. You don't need to be able to hear to view pdfs, do email, lookup the weather, etc.
However, if you have an issue with companies calling you on your phone (or you needing to phone out), you should look into
BT Relay which essentially answers your phone (or makes your calls) for you. Some hearing person acts as a MitM and you choose whether to type and listen, read and talk, or type and read - the MitM does the rest.
I use this on my PC but don't give out the redirect number (it's an additional number you plonk in front of you phone's normal number). Instead, my phone redirects incoming calls and an app on the PC then takes it from there.You can, of course, do it all on the phone: talk while reading the translation the MitM supplies, but since I prefer to type (speech isn't too hot) doing it all on the phone is too unwieldy for me.
BT Relay also works with landlines, of course, if anyone still has one.
Edit: another smart thing I like is the Google translate stuff that does voice to text for me when faced with someone. Also I have a spectrum analyzer which I use to gain access to intercom-controlled places. I can tell when someone is speaking (though not what they are saying) and thus know when to say my bit. I don't think non-smart phones would do those very well.