Originally Posted by
matthabbo45 Just read a couple threads on aluminum macbooks becoming discolored. I guess it is the sweat and oils from my hands doing this.
I have no idea what's causing the issue, since I've never seen anything like that. Something is either abrading the area (are there any scratches?) or something is reacting with the finish. I'm a firm believer of using a case, even if its just a slim one to protect against bumps, bruises, scratches, and whatever is happening to your phone.
If you don't want to use a case you could try having a Zagg Invisible Shield full-body installed. I think some protection is certainly warranted.
Sent from my iridium iPad Air LTE