Both Apple and Google store detailed logs of where you’ve been.
On iPhone: Settings → Privacy & Security → Location Services → System Services → Significant Locations → Clear History
On Android/Google: Go to myactivity.google.com → Location History → Delete
Also check: Google Maps timeline at google.com/maps/timeline
Important:
- Deleting from your phone doesn’t delete backups
- Apps may have their own copies
- Your carrier has independent records
Prevent future tracking:
Set apps to “While Using” or disable location entirely. Review permissions regularly — most apps don’t actually need your location.