[haZard_OS]

I never turn location services on and I run on mobile data (rather than WiFi) almost every moment of the day.

My location was correctly determined within the specified range. sigh Ridiculous.

[kevin_thibedeau]

This doesn't involve location services. The more interesting question is if it works on dual SIM phones for both SIMs.

[kerng]

Turning off cell reception might mitigate it. They seem to use cell triangulation to determine where you are. But maybe also other techniques. That way to locate someone has been possible basically since the beginning of mobile phones - even before internet usage became a thing.