andiwm2003
macrumors 601
no you're not. he didn't say anything about plugging anything in to the nano. he is saying that if sweat gets into the dock connector port (which it could since it is exposed unless in a case that covers it) it can corrode the pins. he is saying that since it happened to his nano it could also happen to an iphone. which is true. just take better precautions to prevent liquid from getting anywhere near it, never mind into a port or socket.
i'm not sure how he's carrying his iphone while running. i have it in a case on my arm and there is no way that it gets wet from swet. i also have a small ziplock with me because in case it starts raining during running and it's good to be able to bag the iphone then.