Samsung The Frame 32" and 43" (2025) detect rotation only turned 90° right, not left.
FYI: In "Art Mode", the 32" Samsung The Frame, and the 43" (2025) model will automatically rotate the displayed image, and the menus 90 degrees to the right end, out of the box. No other accessories are required, no settings required, and the feet or wall plates can apparently be mounted in portrait. I read previously that the "automatic pivot" mount was required, it's not.
When I first stood them on their left end, naively thinking they'd figure it out with a sensor, it didn't work -- so I googled the problem, searched reddit for the problem, and found every misleading answer but nothing that said "they only go one way". So I hope this post finds some future photographer like me who spent way too long instead of simply trying the other end instead. Your back will thank you. - Grace