For instance, Apple shipped its flagship handset, the iPhone X, in November, six weeks later than it usually does with new models following production bottlenecks over the summer. Mr. Cook said during a November interview with The Wall Street Journal that Apple would have preferred to ship the iPhone X, 8 and 8 Plus simultaneously in September when the devices were introduced, but "didn't have that choice" because the iPhone X, which was slated to ship later, wasn't ready.