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iPhone 4S is now a world phone so both GSM and CDMA customers can roam worldwide on GSM networks.

iPhone 4S also has an all-new eight-megapixel camera, which dramatically increases the amount of detailed new photos. But the quality of a photograph isn't just about megapixels. The optics of the camera are just as crucial.  And we made significant improvements here. We increased the size of aperture to let more light in. We added a fifth lens which gave you a sharper image overall and a new sensor is designed to capture more light withineach pixel so you get far sharper photos with more detail and more accurate color. When you see the quality of the photos you get from this camera, it's hard to believe they came from a mobile phone. We also know people love to shoot video on their iPhone, so we made some big advance with here too. iPhone 4S records 1080p HD video at 30 frames per second plus the gyro along with the incredible new software will stabilize your video as you shoot it. This will make your videos look a lot more smoother. 

We've taken what was already in an amazing camera and made it even better. Now it's faced detection. The camera's smart enough to know whether you're taking a portrait or group shot and automatically focus and expose for either. You get quicker access to your camera right from the lock screen. You can use the volume button to take a photo and then you can crawl, enhance and edit your photo right on your iPhone. ISO 5 gives you over 200 other new improved features including your  center, iMessage and Reminders. iPhone 4S also comes with iCloud. iCloud stores your music, photos, X, mail, context, calenders, documents and more and wirelessly pushes your content to your devices automatically. With iCloud, you don't have to do anything, it just works.

We've thought to every square millimeter of what's inside iPhone for us. With the new duel core A5 chip, it's so much faster. The new camera is incredible. It comes with IOS 5 and iCloud. And with Siri, your iPhone can do things no other phone has ever done. iPhone 4S is the most amazing iPhone ever. 

iPhone 4S tech specs:

— Capacity: 16 gigabyte model for $199, 32 gigabytes for $299 and 64 gigabytes for $399

— Size: height: 4.5 inches; width: 2.31 inches; depth: 0.37 inch (the same as the iPhone 4)

— Weight: 4.9 ounces

— Display: retina display, 3.5-inch (diagonal) widescreen multi-touch display

— 8-megapixel camera

— Video recording: high-definition (1080p — comparable to the resolution of a 40-inch flat panel TV) up to 30 frames per second with audio

— Battery: talk time is up to 8 hours on 3G, up to 14 hours on 2G. Internet works for up to p to 6 hours on 3G, and up to 9 hours on Wi-Fi, one hour shorter than the iPhone 4. Up to 10 hours of video playback.

— Dual-core A5 processor (which is twice as fast, and renders graphics 7 times faster than the previous model’s A4 processor)

— Video calling: Facetime

— Wireless carriers: AT&T, Verizon Wireless and Sprint Nextel

—Release date: October 14, 2011