Vivo's IQOO sub-brand is rumored to be dedicated to premium foldable devices. The leaked renders posted on Weibo show a outwards-folding device with very thin bezels. The unfolded state will get a display with a ratio close to 1:1, while the folded state will practically turn the device into a smartphone with front and rear screens.
https://www.notebookcheck.net/Alleged-Vivo-IQOO-foldable-phone-gets-leaked-renders.407846.0.html