"At the end of the day, the numbers are fine, " said Brian Marshall, an analyst at ISI Group.

WSJ: Apple Snaps Growth Streak as Profit Falls 18%

While Apple likely makes less money on sales of older iPhone models, the profit margin is likely similar, said ISI Group analyst Brian Marshall.

WSJ: The Fight to Unseat Apple's iPhone Intensifies

Brian Marshall, an analyst at ISI Group, said he expects between five million to eight million iPhones to be sold, stretching his estimates of Apple's supply to its limits.

WSJ: Crowds Gather at Apple Stores for iPhone 5 Launch