Now that the iPhone 4 has arrived, many iPhone 3GS owners will be wondering if it's really all that much better. The short answer is: yes! When it comes to the iPhone 4 v iPhone 3GS comparison, the bottom line is that the iPhone 4 is considerably better in every department.

Apple's A4 OS on a chip gives the iPhone 4 almost double the processor speed, and far superior graphics, although it's still got the same 256MB RAM to handle the new multitasking functions. To deal with the extra load, the battery is 16% larger, although this doesn't necessarily translate into extra hours of talk time. Standby time and video playback are identical, but you'll get a couple more hours of 3G usage and more audio as well.

In the iPhone 4 vs. iPhone 3GS stakes, not only is the iPhone 4 considerably more powerful and faster, its 5-megapixel camera has a larger lens and built-in flash, making better quality, low light photos possible. The higher resolution video capture is combined with a better screen for excellent playback. Add to that the front facing VGA camera for video calling, and the slim, feature packed iPhone 4 is the hands-down winner.