How To Fix Flickering Screen Samsung S7 Edge. Press and hold the Power key. Black Bar at the bottom of Galaxy s7 Screen.
In case the phone still does not turn on then try starting it. Install ReiBoot for Android on a computer and connect the Samsung mobile to it. Hold the power button and volume down button until you see the Samsung logo and then let go.
Heres a similar case with the same model.
I dont know if this will work for you but it did on my phone. HOW TO FIX YOUR GALAXY S7 EDGE BLACK SCREEN AND GREEN SCREEN FLICKER IN A SECOND. Typical OLED displays like televisions do not require a backlight however the phone has one to decrease screen glare in bright environments. Even with attempts to fix it its still there Safe mode restart etc.

