The scratching on the Jet Black finish is most visible at certain angles to the light. At other angles and away from bright lighting, the phones still look great. In fact, in ideal lighting and at the right angle, they look like a real-world version of the black hole in Interstellar. Jet Black truly is a gorgeous finish… now, if only Apple can find a way to make it more durable.
Use Full Body Protection Clear Skin
How to install anti-fingerprint full body protection clear skin on jet black iPhone 7 Plus