iPhone 14 Pro Max camera audio not stereo
I recently upgraded to the 14 Pro Max, but I can't get the camera to record in stereo. When importing video files to Premiere Pro they're all in mono. The 'record stereo' toggle is on within camera settings and the 'mono audio' in accessibility settings is toggled off. I've also tried both export methods from Photos. Is there anything else I can check, or do I have a dud? Experiencing the same issue in all camera modes (cinematic, action, regular video etc) and I've never had this problem with any of the previous iPhones.
Any advice?
iPhone 14 Pro Max, iOS 16