If you see the same thing on both displays, you should start by making sure the displays are Extended instead of Mirroring ...

How we chose the best monitors for dual-screen setups I’ve been writing about and reviewing monitors and TVs for over a decade, giving me extensive hands-on experience with a wide range of ...

You can split screen on Android to enhance your productivity by multitasking using the built-in split screen mode or by using a third-party app.