Mostly agree except about disconnecting from the internet, classic SMS/voice calls aren't any more private than VoIP.
Your best bet for location privacy is E2E encrypted services like Signal over wifi, plus MAC randomization and a VPN on untrusted networks. I'd say GrapheneOS is good enough for most people, but mobile Linux has also come a long way.
Mostly agree except about disconnecting from the internet, classic SMS/voice calls aren't any more private than VoIP.
Your best bet for location privacy is E2E encrypted services like Signal over wifi, plus MAC randomization and a VPN on untrusted networks. I'd say GrapheneOS is good enough for most people, but mobile Linux has also come a long way.