Apple is rumored to be experimenting with a 200MP main camera sensor for future iPhones, catching up with competitors like Samsung.
Chinese leaker Digital Chat Station suggested that the 200MP shooter being tested by Apple is likely for the main camera, but there is no mention of a larger sensor.
Using a 200MP sensor does not guarantee radical improvements, especially in low light, as pixel binning may be necessary without a larger sensor.
High-resolution sensors like the 200MP one can enhance zoom performance in good lighting conditions, potentially allowing for better zoom capabilities on future iPhone models.