Why can't I move photos in portrait or landscape

[AC Question]

I have Samsung G3, Galaxy ring (Virgin) I think, and it worked fine until I [played around with photos and now I can't change view (portrait or landscape). I have a landscape photos that won't go to full screen but just stay in portrait view?

 

[Tim1954]

Do you have the screen rotation off maybe? Pull down the quick settings menu and it should be there...