The Galaxy Round has a few features which takes full advantage of its curved display like the Roll Effect, that helps user on the display, such as the time, battery lee and notifications on the screen by holding down the phone on its side. And the LG G Flex has the ability to move the wallpaper by tilting their device around and display different unlocking effects when different areas of the screen touched.
LG G F Flex also has a unique feature at its back, which is self-healing ability. Not like the movies Wolverine, when the phone breaks into two pieces and it heals back. The phone is covered with speacial protective film which is will make scratches disappear in mere minutes.
It seems we have to wait to see a videos whether it's true or not.
[SOURCE]