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.

You can rotate a video on your Samsung Galaxy S10 easily using the Gallery app. All you'll need to do is open the video and edit it.

A new update to the Nintendo 3DS emulator Azahar adds dual-screen support just in time for high profile dual-screen handheld releases.

The easiest way to rotate your iPhone or iPad screen is by physically tilting the device. As long as the Orientation Lock toggle isn't turned on, you can easily switch between Portrait and Landscape ...