The Twitter Inc. logo is seen behind an Apple Inc. iPhone 6s displaying the company's mobile application in this arranged photograph taken in New York, U.S., on Tuesday, Feb. 9, 2016. Twitter Inc. is changing its timeline to display popular tweets first, instead of the latest posts, a long-anticipated step thats likely to anger its most passionate users. Twitter is scheduled to report quarterly earnings results following the close of U.S. financial markets on February 10. Photographer: Michael Nagle/Bloomberg via Getty Images