Interesting. Each of the rear cameras has a separate connector. It's not like the older Samsung phones where all the cameras on on a separate daughterboard with a single connector.

I wonder if I could find a camera app that lets me select a different camera at app startup. The built in app closes with an error, unless I long click it and select "Take a selfie".

Ha, it worked! After opening in selfie mode, I can select manual mode in the stock camera app and use a different rear camera. But if I accidentally use the wrong settings, the whole app closes with an error.