iPhone 4 was revolutionary and very few argued to that thinking but the same can not be said about the new iPhone 4S. The new iPhone 4S from Apple has been an evolutionary product that enhances the already introduced features. Lets compare the things between the iPhone 4 and the new iPhone 4S and see how tempting the offer is for you to upgrade? iPhone 4S iPhone 4 Processor Dual-core Apple A5 Apple A4 Display 3.5-inch IPS 960 x 640 3.5-inch IPS 960 x 640 Primary camera 8 megapixel AF with flash and f/2.4 aperture 5 megapixel AF with flash Secondary camera VGA at 30fps VGA Video recording 1080p at 30fps, optional iMovie 720p at 30fps, optional iMovie Cellular Hybrid GSM / CDMA World Phone, Bluetooth 4.0 Quadband GSM, pentaband HSPA WiFi 802.11b/g/n 802.11b/g/n Orientation sensing Accelerometer, digital compass, gyroscope Accelerometer, compass, gyroscope FaceTime video calling Yes Yes SIM standard Micro SIM Micro SIM Batterylife Up to 8 hours talk time on3G14 hours talk time on 2GUp to 6 hours data on3G Up to 9 hours data on WiFi Up to 40 hours audio Up to 10 hours video Up to 7 hours talk time on3G, 14 hours on 2GUp to 10 hours data on WiFi Up to 40 hours audio Up to 10 hours video Weight 140 grams /4.9 oz 137 grams /4.8 oz. Dimensions 115.2 x 58.6 x9.3mm 115.2 x 58.6 x9.3mm Different appearance between iPhone 4 and iPhone 4S volume button on the left side. This gap is believed to solve the signal problem which was found on iPhone 4. Besides, iPhone 4S is lighter than iPhone 4. iPhone 4S re-designed antenna can auto-change antenna setting. It will offer better speech quality. Want to know more information about iPhone 4S, track it on www.trait-tech.com. Dora from trait-tech.com