Switched to a flip phone for my 12yo instead of a smartphone

Yeah I'm probably that dad but hear me out - my son was getting constant notifications, checking his phone every 30 seconds, couldn't focus on homework, the whole thing. So I got him a basic flip phone. He can text and call. That's it. First week was brutal (he was legitimately angry) but now? He's actually present at dinner, his grades went up, and he's reading again. Do I feel like a dinosaur? Yes. Is it working? Also yes. I know it won't last forever but I'm pushing it as long as I can. Probably unpopular opinion here but figured I'd throw it out there.