Apple shares, which have risen 37% so far this year, dropped 3.4% after-hours, following the forecast.
Maestri said Apple expects to have higher iPhone sales for the fiscal first quarter, even though this year's holiday quarter has one fewer week of sales than the year-ago.
Cook said the company's new high-end handset models - the iPhone 15 Pro and Pro Max devices - are facing supply constraints.
Apple's sales in China fell to $15.08 billion from $15.47 billion in the fourth quarter a year ago.
Cook said that after accounting for foreign-exchange rates, Apple's business in China grew year-over-year, driven by iPhone sales and services revenue.
Persons:
Tim Cook, Apple, Cook, Luca Maestri, Bob O'Donnell, Davidson, Tom Forte, Aly, Max, Nabila Popal, Lionel Messi, Stephen Nellis, Yuvraj Malik, Sayantani Ghosh, Peter Henderson, Matthew Lewis, Leslie Adler
Organizations:
Huawei, Apple, TECHnalysis Research, Mac, REUTERS, Huawei Technologies, U.S, Reuters, Pro, Apple Watch, Thomson
Locations:
China, Cupertino , California, Shanghai, San Francisco, Bengaluru