Apple iPhone 3G S Full Review

Hardware
The iPhone 3G S has many internal changes, but you really can't tell the difference at all between the 3G and 3G S by just looking at the case.

The two are so close in size that many cases for the previous model fit the new one. And the touch screen has the same size and resolution: 3.5 inches and 320 by 480 pixels (HVGA)

All the changes are internal -- Apple has bumped up the CPU speed to 600 MHz, while the iPhone 3G's was at 412 MHz. The RAM has also been doubled from 128 MB to 256 MB. Of course, the iPhone 3G S comes with 16 GB or 32 GB of storage.

The iPhone also has an improved camera, and a magnetometer is included now.

Screen
You can't look at the screen and see a difference. You can't touch the screen and feel a difference. But, there is a huge difference to this screen. It has oleophobic coating, which means there is a lot less smudging, and I mean A LOT less. It resists smudges, and if it does smudge, it pretty much cleans up with one wipe. I was always bothered by screen smudge, and to be honest I'm excited for this improvement. A great move on Apple's part.

The back of the phone still smudges the same though. If you have a white iPhone you will never know that problem, but for black iPhones, it's a completely different story.

The good: The Apple iPhone 3G offers critical new features including support for high-speed 3G networks, third-party applications, and expanded e-mail. Its call quality is improved and it continues to deliver an excellent music and video experience.

The bad: The iPhone 3G continues to lack some basic features that are available on even the simplest cell phone. Battery life was uneven, and the 3G connection tended to be shaky. Also, the e-mail syncing is not without its faults.

The bottom line: The iPhone 3G delivers on its promises by adding critical features and sharper call quality. The iTunes App Store is pretty amazing, and the 3G support is more than welcome. Critical features still are missing, and the battery depletes quickly under heavy use, but the iPhone 3G is a big improvement over the original model.

source:- http://reviews.cnet.com/smartphones/apple-iphone-3g-8gb/4505-6452_7-33064709.html#ixzz1gXcdnQyy