The iPhone is quote a big (and at times quite heated) device, not sure that the philosophy behind it will help Apple in this case. Apple Watch, while physically

The iPhone is quote a big (and at times quite heated) device, not sure that the philosophy behind it will help Apple in this case. Apple Watch, while physically small, it can't honestly do all that much (like displaying a movie in HD-like conditions on a reasonable big screen), so its energy requirements are not that big to begin with.