On my iPhone 12 Pro I used to be able to see live activity on my iPhone whenever I started an indoor workout. And when I click on the live activity it would give me the iPhone version of the workout app on the iPhone.

I got a new iPhone 15 pro max and just can’t get it working. I have enabled live activities for the fitness app and still no luck.

Does anyone know how it get it working like it did on my iPhone? It was extremely useful to see all the stats on my iPhone in real time rather than glancing at my watch every few mins.