Please explain what this means, I can turn my cell phone off. How are they able to ping my phone if it has no power? Or are you saying even when you turn it off there's still some part of it that's energized or something?
It’s less clear what is the “art of the possible” vs. practical for people who aren’t actively under surveillance.
There are also conspiracy theories that claim the last 10% of battery is reserved for tracking, so that when your phone says its out of battery and wont turn on, it still has plenty of power left to ping tracking data say once per hour or something. I dont push those theories, but judging by what Snowden released all those years ago I wouldnt be surprised.