https://wccftech.com/evidence-found-in-ios-14-reveals-that-iphone-12-pro-could-feature-120hz-display/

Apple announced its latest iOS 14 update yesterday that brings widgets to the home screen. This is one of the biggest changes that the home screen on iOS has experienced over the past couple of years. However, it seems visual changes aren't the only new additions in the platform. iOS 14 also includes a new option under Accessibility - to Limit Frame Rate to 60 fps which hints at Apple bringing a 120Hz refresh rate with the iPhone 12 Pro.

Ben Geskin recently tweeted that he found something in iOS 14 beta which allows users to Limit Frame Rate on the iPhone. The addition does make sense on the iPad Pro models with a 120Hz display. However, having the option available on the iPhone simply points out that Apple might potentially bring a higher refresh rate with the iPhone 12 Pro.