Chosen Solution
I have some weird lines on the back of my iPhone. It is there which says “Designed by Apple in California” even, like small scratchings. Even where the FCC logos are and just close to the lightning port. However I haven’t dropped the phone or even put it in a pocket with sharp objects. I’ve had it with a case since I bought it. Any idea whats causing this?
Something it putting a lot of pressure on either that spot (like in a pocket) or on the charging port enough to strain/crack the back plastic body
Dirt/sand/any small particles that were trapped between the case and the phone. If they were moving enough to leave marks, then they may have also moved enough to have fallen out by now. Could also be a poorly manufactured case where excess flash from the injection mold or a seam in the plastic is rubbing in that area.
