iPhone 5s corrosion from sweat?
I have an iPhone 5s which I bought just for running in March, so still under warranty. I have always kept it in a case and use a Reebok/Bose iPhone branded case and taken it out straight after running.
The touch ID has started playing up and I took it to the genius bar and have been told it has evidence of significant corrosion and I therefore have to spend £199 for a replacement. It has never been dropped in water or exposed to anything sinister at all.
Surely following all of the recent Apple ads aiming this product at fitness / running etc, this cannot be right? My previous Nano has lasted for two years with no problems at all? Please help as I cannot quite reconcile this as a long term multiple Apple user.
iPhone 5s, iOS 8.1.2