Besides ad-blockers, turn off location tracking in apps. I forgot how it is for Android, but in iOS you can disable location tracking on an app-by-app basis. An

Besides ad-blockers, turn off location tracking in apps. I forgot how it is for Android, but in iOS you can disable location tracking on an app-by-app basis. And you can also partially disable it -- only allow it when the app is active, as opposed to background tracking.