I've been using the Light Phone 2 for 9 months, and it completely alters your lifestyle. Be prepared to be bored in many random situations. If you live in a city, it can be frustrating as so many things have instant access to emails and QR codes integrated into the infrastructure. I keep my iPhone for random stuff.
If I had to get a new dumb phone, I would go with the Mudita Kompakt, or the Light Phone 3 but the price is steep on LP3.
If anything, just grab a Motorola flip phone for $25 and leave your smartphone at home as much as you can for a month. See how it feels!
