The phrase "black bezel" refers to the black frame around the screen of a device, such as a phone or a computer. It is the border that separates the screen from the outer edge. Full definition
The bright red works great with the phone's design, and paired with black bezels on the front, it just looks awesome. (9to5google.com)
The S8 Active will not have the edge - to - edge display that the original model is famous for, instead having flat screen with a thin black bezel around the edges. (businessinsider.my)
The front is all screen, with a wide black bezel on top and bottom. (techpp.com)