Hi , I wanna ask about this problem. I been using my iPhone in the case all the while and recently I take it off and found there is chip/corrosion on the top / side and beside the flash.
Any idea what cause this? I can be very sure it is not caused by scratch. Anyone have this problem?

You are using good casing or cheap one ? Mine is using normal casing only. Not sure is the cheap casing cause this or not

Cheap casing cause this ? Or gold color have this problem ? Actually my space grey 6 plus also have similar problem as well. Not sure why

Few years back ( iphone 3gs , 4 , 4s , 5 ) sold most of my used gadgets here and still able to sold them at quite nice pricing. Usually within 3 days from posting to closing the deal.
Till the 6 plus putting the post for 2 weeks no taker and mostly lowballer come to try their luck. Sold it off in carousell instead.
For 6s plus i recently just sold off for about 1100 . Mine is 128GB gold. Perhaps can get better price but I don’t want the hassle anymore. From posting to replying alot of lowballer to finally meet the one. It not worth for my time to go thru all those trouble.

My 6s plus aesthetically not really good. Quite alot of corrosion here and there. I dont know why but the phone was in casing all the time but that just happen to my 6 plus and 6s plus.
I traded in phone shop and got the xs max.