You Fail.
Sorry, the article uou linked does NOT say a switched off phone can be tracked.
“tracking a switched off phone is a little difficult because when a phone is turned off it will stop communicating with nearby mobile towers. It can only be traced through its last location when it was switched on...”
And
“Putting your phone to Airplane mode will restrict anyone from tracking your location.”
Only exception to the “switched off” case is if you have apple and are dumb enough to always leave bluetooth on. Then again, stupid should hurt.
But Airplane Mode kills all emitted signals, period, end of story. No signals, no tracking.
What the article forgot is that even in Airplane Mode, it can RECEIVE signals. So if someone is dumb enough to leave google tracking on, technically the phone could monitorr and store pings from towers as you move. Then, when you switch off Airplane Mode, it can “phone home” google and update where ya been (but just gross location).
EE speaking.
Did you actually read this link?