Pardon the drift but as Samsung has been mentioned.....
I have a Samsung Galaxy J5 which had an update yesterday, Android V.6.0.1.
Sincé then all my photos are heaped together in Gallery whereas prior to update they were organised in albums within the gallery. The mobile doesn´t seem to offer a means of re-organising the pictures as previously only a choice of "collage" or "Animate". Collage only offers a max of 6 photos.
Not a big deal but an inconvenience. Anyone else seen this and found a solution?