Screen-
A Higher resolution Screen with 3.5 inch of 3GS display, Apple call it "Retina Dispaly" which is boasted to be the best resolution any mobile screen ever had.
Onboard Gyroscopes-
Engineers have made great strides lately in making gyroscopes smaller, cheaper and more efficient, and they're clearly part of the next-generation in mobile motion-capturing sensors. The power of ubiquitous, low-cost accelerometers was introduced to the masses in Nintendo's Wiimotes, and since then they've trickled on down to just about every smartphone or mobile gadget on the market. And just as Nintendo achieved greater motion accuracy for their Wiimotes with the gyroscopic Motion Plus attachment, which pairs both sensors' inputs into true 1:1 motion capture, Apple is adding a 3-axis gyroscope to the iPhone for the same enhancement--another claimed first for a mobile phone.
Gyroscopes add fine-tuned rotational detection to accelerometers' ability to detect linear motion, so you can expect much greater accuracy from tilt-controlled games and other apps. Steve Jobs demonstrated a Jenga-like game for the iPhone on stage, and all I can say to that is yes. The video below, made by the same folks who created the gyroscopes used in the Wii's Motion Plus, does a good job of explaining the difference between the two sensors and why it matters:
Several smartphones on the market now can capture the same 720p, 30fps video added to the new iPhone 4, but in addition,Apple demoed an impressive mobile version of iMovie that brings insanely powerful-looking onboard editing, rendering and export to your phone. Other phones can edit video too, sure, but what Apple showed today seems to go well beyond what's currently offered. If it works as advertised (and that's a big if, considering that I find the current desktop version of iMovie the most frustrating piece of software on my Mac), this is a huge leap forward.
Video Calling-
Apple is promoting the iPhone 4's video calling, dubbed FaceTime, as a paradigm-shift in human communication. Maybe you've heard that before describing various video-calling products over the last decade, at least? So I'm not buying the brain-melting power of a video call on my iPhone just yet. What's interesting, though, is Jobs's announcement of FaceTime as an open standard. Details are vague at the moment, but if FaceTime became a de facto option for video calling on a host of different devices with webcams (and "just works" as so many Apple products claim to do), that could be an interesting development.
Also, for now, you're limited video chatting in a place with Wi-Fi, as the demand on AT&T's network would be extreme.
Video Calling-
Apple is promoting the iPhone 4's video calling, dubbed FaceTime, as a paradigm-shift in human communication. Maybe you've heard that before describing various video-calling products over the last decade, at least? So I'm not buying the brain-melting power of a video call on my iPhone just yet. What's interesting, though, is Jobs's announcement of FaceTime as an open standard. Details are vague at the moment, but if FaceTime became a de facto option for video calling on a host of different devices with webcams (and "just works" as so many Apple products claim to do), that could be an interesting development.
Also, for now, you're limited video chatting in a place with Wi-Fi, as the demand on AT&T's network would be extreme.
