My point is: IF you mount it in a car AND the sun shines on it, of course it heats up. MY solution was mounting it in front of the airco.I'm not really sure what you're trying to say here. You keep your phone in front of the A/C so of course it stays cool. Mine would stay cool as well if I had cold air blowing on it while driving. The point is that these phones shouldn't need a fan hitting them with cool air to stay cool while they are doing basic things like GPS and charging at the same time.