Vivo's premium sub-brand iQOO has released the Pro, which as it turns out has a 4G variant in addition to the expected 5G-supporting model. It is powered by the Snapdragon 855 Plus SoC and has up to 12GB of RAM. The Pro runs Monster UI, a new skin for Android 9.0.
https://www.notebookcheck.net/iQOO-launches-the-Pro-5G-and-the-Pro-4G-as-well.431873.0.html