If your finger moves on the touch screen of the Samsung Galaxy S7, it can happen that the display always flickers pink. The reason for this is, fortunately, no defect of the display, but merely a setting.
We show you how to fix the pink flicker of the display. Please proceed as follows on your Samsung Galaxy S7:
1. First open the app menu and then the settings
2. Scroll down until you see the "developer options". (If you do not find this option, there is another reason for the pink display flickering.)
3. Open the developer options and scroll down until you see "Show screen updates".
4. Disable this option by turning the switch from "On" to "Off". Done!
After that, your display should no longer flicker pink when you make touch inputs via the Samsung Galaxy S7 touch display.