I don’t if it’s still the case , but in stock ROM Androids it would track your location history even with location services turned off.

https://www.wired.com/story/google-location-tracking-turn-of...

That article is about turning "location history" off, not turning "location services" off.

Full disclosure I work at Google but nothing related to that.

It shouldn't take a Google employee to tell all those location options apart.

Apparently journalists at wired can't tell the difference.

Sounds interesting, but it’s still a long way to beat the best finances tracking system, good ol’ Excel sheets.

Mildy related:

https://en.wikipedia.org/wiki/Electrical_network_frequency_a...

Not limited to audio forensics as the article mentions.