Questions loom over iPhone 8 demand and iPhone X supply

Phil Schiller, Apple SVP of worldwide marketing, announces iPhone X features. Photo: Marcio Jose Sanchez / AP

Apple warned Tuesday that iPhone X buyers should show up early when the device hits stores on Nov. 3. Demand for the iPhone 8 has also reportedly been sluggish, with Canada's largest carrier calling sales "anemic." Those are the two likely issues we reported ahead of the device's introduction were likely to be a problem.

Why it matters: The iPhone is the biggest driver of Apple's sales and profits and the launch season is a critical time.