whats the difference between Iphone4 and Iphone4s ?

ANSWER TO THE ABOVE QUESTION Difference between iPhone 4 and new iPhone 4S- iPhone 4- 5Megapixel camera with LED Flash and 720p video recording, Weight 137g, 1Ghz processor, comes with 16gb and 32gb capacity iPhone 4S- 8Megapixel camera with LED Flash and full 1080p HD video recording, Weight 140g, Siri (Virtual Voice Assistant), Dual-core A5 chip powering at 800Mhz single chip, comes with 16GB, 32GB, 64GB capacity