Don't have a "smart" phone.
However do recall the powers to be over here, warning Facebook, smart phone, users that their own actual location and other data can easily be picked up from smart phone photos posted to Facebook.
Has something to do with GPS which automatically "marks" each photo with time, date location etc.
So you post a pic of your car, dog, or family, etc, etc, outside your home, bingo "they" now have your address etc etc.