3 ms·
Settings -> Privacy (grey palm icon at the bottom of the 3rd group) -> Location Services. You can block location data gathering at the phone OS level; however,
by ascagnel_ 11y ago
Settings -> Privacy (grey palm icon at the bottom of the 3rd group) -> Location Services. You can block location data gathering at the phone OS level; however, that won't help you against FB attempting geolocate your phone's IP server-side.