[nightpool]

This would depend on your phone being able to permanently disable its radio, right? I don't know if I would trust my phone well enough for that, I would be worried even in airplane mode about it making some small beacon checks.

[AnarchismIsCool]

There are Meshtastic devices with keyboards that don't require a phone

[_heimdall]

There are a few devices floating around with a hardware switch built in. If you use a Pixel, grapheme OS is probably pretty trustworthy so you at least no there's nothing nefarious down to the OS level.

But yeah, in general if you take a phone just assume it's tracking you or at least making it possible for those with access to know you where there.