There's a joke widely told among tech nerds ending with a punch line that goes something like, "I loved my first gen iPod Touch when it could make calls and was called an iPhone."
The iPod Touch may constitute 40 percent of iOS sales, but the general consensus among gadget hounds is why? Why would you shell out for a device that looks like an iPhone, operates like an iPhone, but doesn't make calls? (It might be argued that the iPhone doesn't really make calls either.)
For its 4th generation iPod Touch, Apple has done much to answer this question and labored hard to set the gadget apart from the iPhone. First off, it does not co-opt the iPhone 4's aluminum and glass ice-cream sandwich design. Instead, the Touch retains a trapezoidal shape with a flat glass front and a smudge-attracting chrome back plate. It's also extraordinarily thin at 4.4 x 2.3 x 0.28 inches, weighs just 3.6 ounces and flaunts a vibrant 960 x 640, 3.5-inch screen. When compared side-by-side, the iPhone 4 looks rather like a behemoth next to the Touch. But aside from outward appearances, the two devices do share some important similarities.

Like the processor! Using Apple's A4 CPU (same chip in the iPhone 4 and iPad) the Touch runs supremely quickly. Scrolling through the OS is swift and simple. Multitasking is also effortless—we ran the music player while engaging in some heavy app usage. If you've never FatBoothed a friend while listening to Thunderstruck, then, well I don't think you've truly lived yet.
Overall the VGA quality cam takes some decent images but is not quite as sharp as ones taken with the iPhone 4. Colors are a bit more washed out and there is some distinct noise. Check out the difference below.



