There are two displays and multitasking options for iPhone Duo, but that doesn’t mean you’ll be able to play two videos at the same time.
iPhone Duo has two displays
If you’ve ever been scrolling a social media app while listening to music, you’ve likely had the frustrating experience of having the music pause randomly. That’s because the social media app took over as the primary audio provider.
The same effect occurs whenever you’re watching video on iPhone or iPad. Picture-in-picture, split view, or even dual screens won’t let a user play two videos at once, even on iPhone Duo.