My friend's iPhone 3G has a weird problem. It goes to sleep/powers off OK, but the sleep wake button refuses to work sometimes after being put to sleep. So if you press the button once while it's on, iPhone turns off, but then when you try and press the button again to turn it on and awake it from sleep, it refuses to turn on, and it must be placed in the dock in order to turn on. Mechanically, the button seems to be working fine and the phone was not dropped. Some reading around on the internet suggested it could be due to changes in temperature/humidity but at this time of the year the climatic changes aren't very significant. It seems to be a problem with the button. What do you think? And what will Apple do, if anything?