Hello. I had my iPhone 5 replaced at the weekend for a speaker issue, and I noticed today when using the replacement phone in a dark room I can see a glowing red light to the left of the receiver. I did a search, of course, which brought up results concerning the iPhone 4 and that it's the proximity sensor and not something to worry about. But I also saw this "eHow" article that says it's because the phone's been exposed to water: http://www.ehow.com/info_8704998_red-light-iphone-mean.html Earlier today I was using the phone when it started raining, so I quickly wiped it against my sweater and put it in my inside jacket pocket. I didn't think that would be enough to cause any damage to the phone and the phone is working just fine, but now I'm a bit worried, having not noticed the light before (I use my iPhone in bed before I go to sleep a lot). Is the eHow article just wrong or do I have a reason to be worried? I don't want my warranty to be invalidated after just three or four weeks... Thanks in advance for any help. P.S. Sorry if this is a dumb question.