https://medium.com/@DavidCullinanJnr/is-2019-the-year-of-the-foldable-phone-4e123b316032 > David CullinanBlockedUnblockFollowFollowingJan 25A working, LG-made rollable display | Image source: T3.comSales of smartphones dropped across the board last year by 3 percent. > The reasons? There’s been a few thrown out there.