Supply chain checks suggest that the iPhone 15 production schedule is on track, but the iPhone 15 Pro Max is rumored to be more expensive than ever.In a note to investors seen by AppleInsider, Jeff Pu of Haitong International Tech Research has chimed in on the iPhone 15 production schedule, predicted volumes of assembly, and the potential for a price hike. Starting off, Pu expects mass production to begin in earnest in August.This is essentially on schedule, discounting the years where the iPhone assemblies were grossly impacted by COVID restrictions. IT also suggests that early low-volume construction has already begun, and is going fine — but he did not go into detail on that matter. Read more