OnePlus has announced its partnership with developer Epic Games to bring an improved Fortnite gaming experience on OnePlus smartphones. As per the press release by the Chinese smartphone maker, the OnePlus 8 series will be the first to get 90FPS gameplay in Fortnite.

source https://gadgets.ndtv.com/mobiles/news/oneplus-partnership-with-epic-games-fortnite-runs-at-90fps-on-op8-series-2235754