The unease haunting suppliers of Apple Inc. has expanded to the biggest players.

Foxconn Technology Group, the top assembler of iPhones, is planning to cut 20 billion yuan ($2.88 billion) from expenses in 2019 and 10% of non-technical jobs to cope with “a very difficult and competitive year,” Bloomberg reported Wednesday, citing an internal memo.

Foxconn said it was conducting a regular annual review to budget effectively for the coming year, but the decision adds more concerns over weakening demand for iPhones following the release of the latest models in September. Last week, at least four Apple suppliers cut revenue forecasts, citing reduced orders from large customers.

Foxconn said its iPhone business will need to slash expenses by 6 billion yuan next year, according to Bloomberg.

Last week, Foxconn posted weaker-than-expected third-quarter earnings, reflecting slowing sales to Apple. Japanese investment bank Nomura predicted the company will crank out 11% fewer iPhones in 2019.