Kvaesitso launcher on my phone works fine with internet access cut off (which is a thing you can do on GrapheneOS). Weather, calendar, etc. still work because it integrates with external apps for all that. It’s also FOSS.

Yep, smspool. For VoIP it’s JMP.Chat locally, and. silent.link when I travel (data only).

That’s fair, if Amazon gets your real name and address anyways, the privacy protection of paying with Monero isn’t as big of a deal.

I pay for my VPN with Monero, I pay my mobile carrier (VoIP + data eSIM) with Monero, and the last time I travelled internationally I also got a data eSIM for that with Monero. Every so often I need to get through a Google “give us a phone number” prompt, and the one-time SMS OTP service I use is also paid with Monero. There’s also stores where you can buy gift cards for real-world things (Amazon etc.) with Monero.