https://wccftech.com/iphone-models-2018-350-million-sales/

According to Daniel Ives, an analyst at GBH Insights, he foresees a new sales boom after the launch of the new generation of iPhones. He predicts that this could lead to sales of around 350 million iPhone sales, but these are going to be spread in the next 12-18 months.

He says that he sees a great iPhone upgrade opportunity in the future and made this prediction in an investment note that was later seen by Business Insider. He said that a lot of iPhone users did not upgrade to the newer models last year as the iPhone 8 lineup was a lot like the earlier models and the iPhone X was deemed too expensive by a lot of people.