iPhone 16 Pro screen flickering after closing camera app

It has only happened twice but if I remember correctly both times were after closing the camera app. The screen flickered on and off quickly. No black or white lines just a full black screen. The first time it happened it flickered for maybe a half a second then stopped, second time was more like 3-5 seconds then stopped. It’s an intermittent issue that I can’t recreate. I just got my iPhone 16 pro yesterday (not the max) so shouldn’t happen with a brand new phone. Haven’t dropped it or anything like that. Any ideas or has this happened to anyone else?