Apple had also asked smaller iPhone assembler Wistron to stand by for rush orders, but the company will receive no orders for the iPhone XR this season, the report said, citing supply chain sources.
"For the Foxconn side, it first prepared nearly 60 assembly lines for Apple's XR model, but recently uses only around 45 production lines as its top customer said it does not need to manufacture that many by now," the Nikkei quoted a source as saying.
Five years ago, Apple cut production orders for its plastic-backed iPhone 5C a month after its launch, fueling speculation of weak demand for the model.
The Cupertino, California-based company warned last week that sales for the crucial holiday quarter would likely miss Wall Street expectations.
Apple did not immediately respond to Reuters' request for comment.
Foxconn and Pegatron each said they would not comment on specific customers or products.
© Thomson Reuters 2018