We have Tello for our phones for that reason. Just phones. $8 a month, unlimited talk and text, no data. We have 2 flip phones on that plan as that is all those family members want. You get a $10 credit if you have a referral code. Not sure where else you can get a code but my code: https://tello.com/account/register?_referral=P35JBC4PAll he does is phone calls. No social media. No navigation. No texting. No searching for somewhere to eat. Just a phone. That is all he wants from it.