From my experience modified iPhones make the perfect dumb phones that you will actually end up sticking with and it's free if you already have one. https://news.ycombinator.com/item?id=45171200 I use this method ^ which lets you keep essential apps but otherwise have dumb phone (no browser, no App Store). Highly recommend. On the other hand, I have turned my laptop into a dumb computer using cold turkey blocker. I've…
It's like 4-5 years old and still kicking.
It has Music, Maps and Telephone.
Also my significant other can follow me on Find My Friends to know when I'll arrive.