Well, well, looks like foldable display stuff are back in style after Samsung's Galaxy Fold debut, as nubia also revealed a poster on an upcoming nubia smartphone which will “Flex your life”. Set for an MWC 2019 unveiling on 25 February 2019, the poster reveals what looks like a shell at first but this is actually the visual representation of the Fibonacci sequence along with the aforementioned statement of “Flex your life”. Could this be nubia's foldable display smartphone?