You can use two apps at once on your Android device by opening them in split screen view with a few simple steps.

A new 90/10 split-screen ratio is now available in the latest Android Canary release, allowing for more flexible multitasking on tall displays. This feature lets a primary app use 90% of the screen ...

You can use Samsung's One UI to do split-screen multitasking on a Samsung Galaxy S10. Here's how to use it to display two apps side by side at once.

This is one design trend I hate but some hardware manufacturers don't give you a choice on whether you want to use it.