Aluminium on my 6s Plus has been chipping on its own especially at the edges. It's appearing at the bottom of my phone all along the antenna band and now it's appearing at the top. It's also appearing around my pentalobe screw holes, lightning port and headphone jack. I seriously think it's a manufacturing issue. Some problem with the 7000 series aluminium that's causing the edges of the aluminium to be very very easily chipped. I used my phone with a cover since Day 1 and yet this happened. I used my 6 Plus pretty much naked for the whole year and yet it hasn't chipped even though it has softer 6000 series aluminium. Do any of you have this issue?