We've analysed whether the HTC Desire is better than the iPhone 4 but what about the two operating systems that power these leading mobiles? Does iOS 4 from Apple really pack a punch when it comes to smartphone supremacy, or is the real champion Google's Android OS? We look at the key areas of each OS to find out which truly is king of the ring. ... The functionality, flexibility and fun of Android 2.2 simply leaves iOS 4 in its dust. It might not be as straight forward, it might be easier to throw off kilter, it might not...