Hi there, The power on/off button of my 3G is not working anymore. I suspect there was a bit of water going into the speaker (the one you put next to your ear). The moisture sensors (jack + dock) are still ok. I have sent back the Iphone for repair and I am wondering if the guys at Apple will open the case (and might discover that the two other sensors on the motherboard might have turned red) or just check the sensors located outside. Best W.