Wasn't this a problem on the old iPhone 5 too? Sucks to spend that kind of money on a phone only to have something like this happen. I guess you can always hide the chips with a case but the phone shouldn't be chipping in the first place.
"I just open the casing once a week to wipe the dust off from the phone,” the poster writes. “Until yesterday when I take off the casing, and notice there is something at the edge of the phone body next to UP Volume button. At first I thought it just the dust. I try to wipe it using microfiber cloth as usual."