The United States Patent & Trademark Office has granted Apple a patent that suggests a future iPhone could get a screen with a variable refresh rate going up to 240 Hz—or twice as much as in the iPadPro's ProMotion display. While iPhone screens have remained stuck at 60 Hz, all iPad Pro models have had screens with a variable refresh rate of up to 120 Hz.
Apple granted a patent for iPhone screens with multiple refresh rates up to 240 Hz