Since then, I've felt like parts of my brain are growing back. While I'd cut down significantly on smartphone usage over the prior year, I'd started to realize that the mere act of exercising "don't use it" discipline was in itself distracting. That's all gone now. My flip phone is not fun. It's boring. In fact, it's immensely frustrating when I do need to carry on a texting conversation. And that's perfectly alright.
When I need to get someplace new, there's no Maps to save the day. Instead I look at the route beforehand and write (by hand, with a pen) a few notes on a Post-It. In the process, I've learned more about parts of two cities than I had in a year or more of mindless reliance on Maps.
The biggest thing I miss and haven't found a satisfying workaround for is the camera. Flip phones seem to be stuck in about 2001, camera-wise. Even under the best of conditions, the results are barely passable. It's my patient hope that if enough people reject smartphones, there may one day be higher end functionality available in a flip.