Fancy red lighting (hidden feature)

Steps to get the lighting thing up...
1. Place your phone on a flat surface (this is a must, otherwise it will not work)
2. Open the camera
3. Switch to front camera/selfie mode
4. Turn off the lights in your room
5. See the magic



Note: Works best if you have a transparent case.
I do not know if it works in all variants of the S6 Edge.
Confirmed working on the S6.