[infogulch]

You can get texts, app notifications, and phone calls, you can play music and podcasts, you can download app updates, an app you opened earlier is still in the same state later. All with the phone screen off. They also know that none of these things are possible when their phone runs out of battery and dies. I think most people could notice the difference between these states and realize that screen off != phone off.

What I think most people don't notice is that the fact that simply because they can receive phone calls and notifications implies that they are in practice being tracked.