Samsung Galaxy Grand Duos not embedding GPS information in Photos

My Samsung Galaxy Grand Duos is not embedding GPS information(Latitude/Longitude) in Photos taken from the phone camera. I have enabled GPS option in main settings, and also set the GPS tag in the camera settings. The latitude and longitude information is not appearing in the photo details. I do not wish to enable the "Mobile Data" option. I do not need the location information like place name, etc... I only need latitude and longitude information. What other setting am I missing?