Unfortunately such documentation is authwalled:
To truly turn off your android, put it in a Faraday box; sold in Canada at Canadian Tire.
Or the Purism x SLNT collaboration:
Emphasize old
I believe itās true for my Pixel 7a with GrapheneOS too (i.e. newer Android) . However, I havenāt really tested that.
Nice!. Enjoy the best Linux experience via Android/Linux Pixel 7a.
Iāve been looking into applications of being able to detect the distance of the Librem 5 from various other bluetooth devices, and have concluded that it is unreliable to do so via BT. I stumbled upon UWB, and was doing research, and found that the car companies all seem to be moving towards using it for detecting proximity, where-as bluetooth is used only for initial authentication.
Bluetooth you can use for proximity, but your accuracy is in a range of meters, whereas UWB accuracy is within a few centimeters. Anyways, hoping whatever version 2 of the Librem 5 or any Librem 1 (smartwatch), has UWB & NFC built in as well, they seem like they will be essential in the coming decade for various applications.