https://www.cnet.com/news/iphone-x-was-best-selling-smartphone-in-early-2018/ >People have really wanted to buy the iPhone X in 2018.  >There's simply no understating the importance of the iPhone in those results. Apple generates about two-thirds of its revenue -- and, most likely, much of its profits -- from the iPhone portfolio. The company sold 52.2 million of its phones in the first three months of 2018, and Cook noted that the iPhone X was Apple's best-selling device every week of the quarter.