A:AnswerYou cannot use the S810c app on the S800c. The camera's use different versions of the Android OS and are not updatable. The S810c app is not compatible with the OS used on the S800c.
A:AnswerThe recorded GPS data is stored in the meta data of the file. If you use Nikon View NX-i or Nikon View NX2 it will display a map with the exact location where the image was shot. It will not print on the photo.
A:AnswerYes the S810c can record location data for images as well as movies. When using this function, set Access to my location in Location access to On.