Apple iPhone 4S looks exactly the same as the iPhone 4, ie. there are no cosmetic changes in this new model. All the changes lie under the hood and are apparent due to the performance upgrade seen over its predecessor - iPhone4.
So what does this "S" bring to the very popular iPhone 4?
The iPhone 4S, comes with a Dual Core A5 chip, similar to the one seen in the iPad 2. The two cores in the A5 chip makes it twice as fast as the iPhone 4, also there is bump in graphics, we can now experience seven times faster graphics.
The iPhone 4S comes with iOS 5, which adds a buch of new functionalities, which I will cover in just a bit. The combination of power-efficient A5 chip and iOS 5 delivers outstanding battery life.
The next major upgrade is in the Camera area, the iPhone 4S has all new optics. It now comes with a 8 megapixel camera and a custom lens with larger f/2.4 aperture, which means more light reaches the sensor and the images come better exposed. This is particularly useful in low lit conditions.
The camera can now record videos at full HD 1080p. There is also video stabilization option which removes unwanted motion caused by unsteady hands. And if you’re recording a scene with subjects in both the foreground and the background, the camera focuses where you want with a tap.
iOS 5 now comes with photo & video editing software, which means you can crop, resize, enhance your photos directly from your device and upload them straight away!
iPhone 4S now also adds iCloud, it is the easiest way to manage all your stuff, because it manages it all for you. iCloud stores your music, photos, apps, mail, contacts, calendars, documents, and more. And wirelessly pushes them to all your devices. It’s automatic, effortless, and seamless. So if you have an iPod touch, an iPad and iPhone 4S you can access your favorite music on all these devices wirelessly from iCloud.
iPhone 4S also comes with a intelligent assistant called Siri, you can talk with Siri or ask her a question and Siri will reply to your question like any personal assistant would do! This feature is not new to mobile or hand held devices but it is the best we have seen for far! Apple still states this feature as "Beta" so when it is completely ready it might reach a new level altogether.
Apple iPhone 4S is now a world phone, which means customers can use the phone over GSM networks all over the world.
Other features on iPhone 4S are same as its predecessor iPhone 4.