We already showed you the new iPhone from every angle, inside and out. Today, Steve Jobs revealed it again, telling stories about the remaining details. Here is a complete guide to all the features of the new iPhone 4.

The design

Hardware design has not changed from what we already know about. Using the same material with the prototype: Black glass and stainless steel edge. This is in keeping with the rest of Apple’s product line, from hard edge to utilitarianism-Dieter Ramsesque from the iMac and the iPad.

The size is smaller than the previous generation: 34% thinner than the iPhone 3GS. Although the weight of three grams. According to Apple, it’s thinnest smartphone ever. This split the volume buttons for, unlike the current iPhone 3GS, all made in stainless steel.

Stainless steel edge
Stainless steel edge provides a structure for the iPhone, and act as part of the antenna for the 3G and Wi-Fi. In theory, this would greatly enhance the ability of the revenues from the new iPhone 4.

Physical Size
iPhone 4 is 4.5 x 2.31 inches and 0.37 inches thick. Weighing 4.8 ounces (137 grams).

The hardware

The new big brain
It has an Apple A4 chip inside, just like the iPad. Inside the A4 there are a few interconnected chips: A Cortex-A8 main processor unit—the main brain—paired with a PowerVR SGX 535, which handles the high definition graphics of the new iPhone. These are directly connected with each other and two low-power 128MB DDR SDRAM chips. Since all these components are in the same chip, Apple claims the iPhone 4 can process data more quickly while consuming less battery than before.

The A4 also consumes less power because its sub-components can be switched on and off when they are not needed, shaving watts whenever it’s possible.

Battery life
The battery is 16% bigger than the current one. Coupled with the A4 processor and new display, it results in a longer battery life: Apple claims 40% more talk time. Here are their figures:

• Talk over 3G: 7 hours.
• Browsing over 3G: 6 hours.
• Browsing over Wi-Fi: 10 hours.
• Video: 10 hours.
• Music: 40 hours.
• Stand-by: 300 hours.

The display
The 3.5-inch multitouch screen has a resolution of 960 × 640 pixels. Apple calls is the Retina Display, and it has four times as many pixels as the current iPhone 3GS’ display. The screen has 326 pixel per inch resolution, a higher definition than your typical magazine, a quality that shows in the screenshot.

Apple claims that this IPS-based display—the same technology as used in the iPad—also has 800-to-1 contrast ratio which is four times better than the 3GS, with a higher viewing angle.

The apps will take automatic advantage of the increased relative resolution, which mean they will be a lot sharper for text, 3D graphics, and vectorial art. However, developers will need to include higher resolution bitmap images to make the app look perfect.

Like the iPhone 3GS and the iPad, the display has an oleophobic layer that makes it easier to clean.