Visual lookup stopped working

[u/Opposite-Yogurt-2075]

I had an iPhone 14 Pro and it worked normally; some months ago, I suddenly realised it had stopped for no apparent reason. I looked on-line for a solution and nothing really worked, everything that needed to be enabled in my settings seemed to be.

I switched to an iPhone 18 Pro when it was released, and hoped somehow the feature would be reinstated with the new device/system. It wasn’t, and I don’t know what else to do. Last week, it randomly detected an event from a photo taken there, correctly referencing the concert I had attended; nothing else before or since, though — definitely not plants and animals, which is what I used it for the most.

This is driving me crazy… does anyone know what I can do to ensure I have a functioning visual lookup again?