iPhone manufacturers' slowing sales are a bad omen for Apple

Investors hunting for clues to the iPhone X’s reception can take a deeper look at its main manufacturing partners. And the latest doesn’t look good. Apple Inc.’s five largest device assemblers reported a sharp slowdown after peaking at the end of last year, suggesting demand for the high-end device may have faded just a quarter after its release. While Hai Precision Industry Co., Pegatron Corp. and three other key suppliers reported an 8 percent rise in their total sales across