iPhone 13 Pro ‘ProMotion’ Display to Add Support for Third-Party Apps with Software Update
Apple says limitation is an iOS bug, software fix coming soon.
ProMotion Display
Apple Considers ProMotion Refresh Rates for Next iPhone: Digitimes
Apple is said to be considering switchable refresh rate display in 2020 iPhones.
Apple May Use 120Hz ‘ProMotion’ Displays in 2020 iPhones
Displays with 120Hz refresh rates offer a much smoother on-screen experience.