My dumb phone solution: an Apple Watch with a cellular connection.

You can’t browse the web or install addictive apps. But you can get your mail, texts, and phone calls and you can listen to music, check the weather, and navigate with a map. It also has a physical dial you use for scrolling.

There’s enough friction with the device that you aren’t glued to it, but it’s functional enough that you won’t miss leaving your phone or wallet at home. It mostly becomes a watch first and foremost but also has the perfect feature set as a phone replacement.