BEIJING, CHINA - JANUARY 07: Apple iPhones are seen on display at an Apple Store on January 7, 2019 in Beijing, China. Apple Inc. lowered its revenue guidance last week, blaming China's slowing economy and weaker than expected iPhone sales, as the company's chief executive officer Tim Cook said in a letter to investors the sales problems were primarily in its Greater China region that accounts for almost 20 percent of its revenue and includes Hong Kong and Taiwan. (Photo by Kevin Frayer/Getty Images)