I was mostly thinking about my neighbours having airbags in their own homes.
There's an iPhone that I only use for dev, and it surprises me at how bad it keeps charge when it's basically not in use, whereas my old S8 has far better standby time.
In the "Find my" setting there must be an option to turn off participation in the "Find my Network" which is the function of iPhone to act like a relay to other devices who want to advertise their position but don't have internet access.