I just wanted to share my experience today at Genius bar. A few days ago my wife's iPhone suddenly stopped making any sound. When she answered the person ringing could not hear her and she could not hear them. No ring, no interface sounds. I did a factory reset, etc to no avail. So I booked in to Genius Bar. They took one look and said the indicator in the dock was red and the warranty was void. So I was shocked. He insisted that it is only triggered when immersed for 90 seconds. There is no way that has ever happened. We take really good care of our iPhones ( I have one too ) It was going to cost me AUD$249 for a replacement. I remained calm but explained that I know for a fact that sweat has been known to trigger those indicators, and Apple is the only company that have indicators on the outside for quick diagnosis and it does not prove logic board water damage. He did not disagree with me, and then just when I thought I had no recourse other than fork out the cost he said it was highly irregular but he would crack it open and check for internal water damage and see what he could do. When he returned he merely stated I had "dodged a bullit" and he would replace it under warranty at no cost. The moral of this story is show your knowledge of this issue to them and insist they check the internal indicators. it only took him and few extra minutes to check, and I now know that if your external indicators are red and the internal are not they have the discretion to cover it under warranty. If they can be triggered by something like sweat, then the procedure should always be to open it up and check internal. So I really appreciated the staff member who went out of his way to hear my case and pursue the matter further to help me out.