The world's biggest public company is expected to report on Thursday that iPhone sales fell about 5% for the all-important holiday quarter, according to Refinitiv.
The last time iPhone sales slipped was in the August-October period in 2020, months into the COVID-19 pandemic.
Greater China, including Hong Kong, is key to Apple's fortunes, contributing roughly a fifth to annual revenue.
FUNDAMENTALS** Revenue estimated to have fallen 2% in the last three months of 2022, Apple's first fiscal quarter.
** IPhone sales likely fell for first time since 2020, while services business rose 6%.