Computers have cooling fans. iPhones don't. As phone processors become faster and faster, consumers will have to use common sense to keep them from overheating. Common sense like, if it is on your black car seat in direct sunlight using GPS on a 90 degree day, maybe you should remove the carrying case and check th temp of your phon every 5 minutes, or better yet keep I out of direct sunlight by tossing your white tshirt over it when you aren't looking at it, and maybe turn it off for a few minutes if you notice it getting too hot. Yes people, YOU are goin to have to use common sense.