[ss2003]

or just off its gps.

[jonknee]

Your phone is constantly tracked by the cell towers it communicates with and in urban areas that's quite accurate location data. This data is sold to third parties.

https://krebsonsecurity.com/2018/05/tracking-firm-locationsm...

[cfadvan]

I can put my phone in a Faraday sleeve, not so easy for a scooter.

[qaq]

There are a number of chips in the phone running their own OSes that you have no control over.