Gene Munster, an Apple analyst and managing partner at Loup Ventures, said "one-third of the issue" comes from Apple's decision to hike the price of its entire iPhone lineup, with multiple models in excess of the once unfathomable $1,000 price tag. This move "dampens" the number of people looking to upgrade to new iPhones, he said.
In his letter, Cook did not mention price hikes specifically, but he did admit that there are other factors hurting iPhone sales outside China, including fewer carrier subsidies and the company's decision to offer cheaper battery replacement last year.