https://finance.yahoo.com/news/chinas-slowing-economy-problem-apple-144347215.html

“We also believe that smartphone unit volume deteriorated by ~15%Y/Y in Q3 which is unheard of in a typically seasonally strong Q3,” Hall said. “Though most of the smartphone weakness was in the mid and lower range we find it hard to believe that this general environment is going to be helpful to Apple unless things improve late in the year.”

However, Hall noted that customer conversion to 6-inch or greater iPhone products could help offset some of the weakening consumer demand “in both China and elsewhere.” Apple did not have any iPhones with screens sized at or about 6 inches last year until the launch of the XR and XS Max models in September.