Izgleda da je ekran na S7 dosta poboljšan u odnosu na S6:
Galaxy S7 OLED Display Technology Shoot-Out
"The Galaxy S7 has a Maximum Brightness that is 24% higher than the Galaxy S6, which is a significant and visually noticeable improvement, particularly in high ambient light. The Contrast and Contrast Rating in High Ambient Light have also significantly improved. We’ll cover these in detail below."
http://www.displaymate.com/Galaxy_S7_ShootOut_1.htm