Every app installed on your smartphone with permission to access location service “can” continually collect your real-time location secretly, even in the background when you do not use them.
Do you know? — Installing the Facebook app on your Android and iOS smartphones automatically gives the social media company your rightful consent to collect the history of your precise location.
If you are not aware, there is a setting called “Location History” in your Facebook app that comes enabled by default, allowing the company to track your every movement even when you are not using the social media app.
So, every time you turn ON location service/GPS setting on your smartphone, let’s say for using Uber app or Google Maps, Facebook starts tracking your location.
Users can manually turn Facebook’s Location History option OFF from the app settings to completely prevent Facebook from collecting your location data, even when the app is in use.
However, unfortunately, disabling Location History would also break some Facebook features that rely on location data like checking into a nearby location, tagging locations in an uploaded photo or while using Nearby Friends, a feature that lets friends share their locations with each other.
images from Hacker News