It's been less than five years since I switched to a smart phone. If I wanted to go back to a distraction free device, I would buy a pay-as-you-go dumb phone,

It's been less than five years since I switched to a smart phone. If I wanted to go back to a distraction free device, I would buy a pay-as-you-go dumb phone, and that would be that. Another option is a cell plan without data. I think it's easier to cut out the functionality altogether rather than trying to let a few things through without opening the floodgates.