Thanks, nice!

Pretty much how I live. It was a bit easier in my case because I have never used smart phone with SIM card. I have one CalyxOS device without SIM for BTC and LN experiments (unfortunately for me, most of the cool new stuff is mobile-first or mobile-only) and Osmand. And people know that when I am outside, I am offline. So they do not expect immediate responses.

An unexpected but welcome advantage was that when the rulers here in Taiwan demanded entering places only after scanning QR (everybody was happy to follow), I did not have to scan anything. Instead, I wrote a name and a phone-number-looking number on a paper (I hope somebody later read all those names).