Just bought a product red iPhone 8 plus, i boot up the phone, it shows up a white line, every time in random places, just for a millisecond, then it seems to get normal. I saw many people with my same problem. What is this?? Is it a software or hardware problem? Please help meI have to agree. I used a 4s with no case for nearly two years with almost no noticeable scratches. My 8 is covered in hairline marks that are only really visible under bright lights.