How do you use dual screen on iOS 14?

Open an app. Swipe up from the bottom of the screen to open the Dock. On the Dock, touch and hold the second app that you want to open, then drag it off the dock to the left or right edge of the screen.

Is there split screen in iOS 14?

Turn the phone to landscape to split the screen and show text from both sides of the conversation. … Conversation mode works for downloaded languages even when you don’t have an Internet connection.