[buro9]

I now use this: https://offpocket.com/

It has much the same effect. You can leave the phone powered on, but whenever it is in the case it is effectively in flight mode but without requiring me to do anything.

It feels quite liberating to be in control of communication like this and to consume when you want to. A form of zero-distraction for life.

[timbro]

OTOH, when you just turn off the link to cell towers, you gain huge amounts of battery time - quite nice.