GrapheneOS Blastoidea It doesn't work if the battery is completely dead or removed. The battery level has to be above a certain bare minimum for the OS to be willing to run or the firmware being willing to boot it to avoid trying to run off inadequate power and potentially causing data corruption.
Blastoidea GrapheneOS Thank you for replying. I guess they should have said “ ….. battery has almost died.” A little honesty might have been in order there. Again, thank you.