I guess a feature phone would be best, but it would be very nice if the particular model supported at least whatsapp web. Do feature phones run android in general? Nokia 8110 4G OS was AOSP based but didnt support it.
A lack of touchscreen would be a bonus I think, for battery life and practical reasons. Sharing the internet to a laptop so I can write to people is important.
Privacy and security are not really important for me here. They are generally, and have guided some of my choices in the past, but I have no will and strength to fight this fight anymore like I used to. For the phone, I just want something that is cheap, practical and works pretty much out of the box. And yes, battery life is super important, all the different background stuff running on modern phones drain the hell out of it, and so do touchscreens.
Only to boost a friend.