I've gone to a halfway house. My smartphone has become a small tablet that never leaves the house and I put the SIM into a Nokia that cost £17 for calls and texts. Composing SMS is painful compared to a smartphone. Other than that I really like leaving internet devices at home, but my wife and friends can still get hold of me. Apart from the occasional snake game, I have no compulsion to pull the Nokia out of my pocket when out. And it only needs charging once or twice a week. It's impractical for most tbh but I find it really helps to shut off. Especially when I've been working on phone apps full time, at those times even looking at a smartphone UI makes me feel sick.