Comparing the iPhone 4S and iPhone 4: Has Much Changed? [PHOTOS]

On contract, the iPhone 4S will cost customers $199 (16GB), $299 (32GB) and $399 (64GB). The iPhone 4 costs $99 for the 8GB. Photo: REUTERS
The iPhone 4S has 3.5-inch IPS 960 x 640 and the iPhone has 3.5-inch IPS 960 x 640. Photo: Reuters
As for primary camera the iPhone 4S has 8 megapixel AF with flash and f/2.4 aperture and the iPhone 4 has 5 megapixel AF with flash. With regards to secondary camera, the iPhone 4S comes with VGA at 30fps and the iPhone 4 has VGA. Photo: Reuters
iPhone 4S is equipped with Dual-core Apple A5 while the iPhone 4 has Apple A4. Photo: Reuters
The iPhone 4S comes with 1080p at 30fps, optional iMovie, while the iPhone 4 has 720p at 30fps, optional iMovie. Photo: Reuters
The iPhone 4S is a world phone (GSM/EDGE, CDMA) with 802.11b/g/n Wi-Fi and bluetooth 4.0 wireless technology. The iPhone 4 is quadband GSM, pentaband HSPA with 802.11b/g/n Wi-Fi. Photo: Reuters/Robert Galbraith
For the iPhone 4S you get up to 8 hours talk time on 3G, 14 hours talk time on 2G, up to 6 hours data on 3G, up to 9 hours data on WiFi, almost 40 hours audio, and up to 10 hours video. For the iPhone 4 you get up to 7 hours talk time on 3G, 14 hours on 2G, almost 10 hours data on WiFi, up to 40 hours audio, and up to 10 hours video. Photo: Reuters
The iPhone 4S weighs 140 grams / 4.9 oz while the iPhone 4 weighs 137 grams / 4.8 oz. As for dimensions the former is 115.2 x 58.6 x 9.3mm and the latter is the same. Photo: Reuters

So we finally know the truth - no iPhone 5s only iPhone 4S. Apple released the iPhone 4S on Tuesday during its special meeting at it Cupertino campus in California. But how much has the phones changed in comparison? The International Business Times took a look.

Click the slideshow to start and tell us your thoughts on the upgrade.