I am using images from my camera gallery. I have tried saving direct from the gallery and also from the saved image in the wallpaper image gallery. The Wallpapers remain for 30 mins and then revert to the Samsung factory images.
I have just down downloaded latest upgrade on Galaxy S6 and afterwards my wallpaper settings were reset to the factory settings. Despite resetting wallpapers from my Gallery after a short while they revert to factory settings. How do I fix this?