Here is my iphone 7 still in warranty ... i was changing my cover and had seen these rust points and eaten ports i talked with apple support and went to service provider and they just assumed it is chemical damage out of no where and when i talked to apple advisor he told me it is your problem not ours and ended the call and was talking in a rude way i complained to apple and they said that pictures and report will be delivered to engineering office .. and i am waiting ... but the report of service center said it is chemical damage but they have no proof will that affect apple decision ?? and what should i do if they refused to change the mobile .. please help .. thanks in advance