Not only did Apple’s (NASDAQ:AAPL) fourth-quarter revenue and profit fall short of expectations, but sales of its star product, the iPhone, fell for the first time since 2020. iPhone sales in the fourth quarter were US$65.78 billion, lower than the expected US$68.3 billion, down 8.2% year-on-year, the first year-on-year decline since the third quarter of 2020, mainly due to the disruption of high-end flagship mobile phone production in the fourth quarter of last year by the epidemic.