Epic Games has announced that, thanks to Unreal Engine-based optimizations, Fortnite for mobile can now run at up to 90fps. However, this new option will start out as an exclusive to the OnePlus 8 series, leaving other phones with 90Hz displays (or higher) in the lurch at present.
This new mode has been launched in India, as well as another new aspect of the collaboration between this OEM and Epic. It is a new way to install Fortnite, through a 1-button interface found in OnePlus' GameSpace. This is a specialized area within the OxygenOS UI, possibly inspired by others exhibited by gaming phone brands such as Black Shark.
On that note, OnePlus has also added the ability to run Fortnite at 60fps, but only to its 7T and 7 lines of 2019 flagships. As for older, yet still serviceable premium devices from this brand, they have been left at the standard rate for now, at least.