Last Monday in a fit of exasperation I turned my phone into airplane mode. And that's where I left it, for an entire week. I swear this was the most productive week of work I've ever had in my professional career. It's astonishing. On the weekend I wanted to call my mom and yet I dreaded taking it off airplane mode. I'm going to try doing this for the foreseeable future.
You can do wifi calling in airplane mode. Left ours in this mode by default for months at first and then realized we could just cancel the cell phone plan entirely to save money. Wifi is everywhere when you need it.