Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3) Most overlooked improvement? It has got to be the quieter vibrate alert. Like the CDMA iPhone 4, the alert now feels a lot softer whilst in the hand, yet can still be felt when in a pocket. Best of all, it doesn't scare the hell out of everybody when it vibrates on a desk. The S stands for softer!