Apple iphone 4--Awesome Engineering !

Apple CEO Steve Jobs opened the 2010 Worldwide Developers Conference today by announcing the latest iPhone incarnation, the iPhone 4. As expected, the latest handset features a high-resolution display, a faster processor, and video calling, but it also sports unexpected additions like a new antenna and a gyroscope. It will be available exclusively with AT&T starting June 24. The price with service is fair--$199 for the 16GB phone or $299 for the 32GB device--and both models come in white and black versions.


Design
The new iPhone's design is a sharp departure from the previous iPhone models. The front and back sides are glass, both surfaces are flat, and a stainless steel border circles the entire phone.


Antenna
The stainless steel border is more than just decorative; it doubles as a new antenna that circles the entire phone.

Display
Apple has a unique talent for making us want something we never knew we wanted. The iPhone 4 features a 940x640-pixel (or 300 pixels per square inch) "Retina Display," which is four times the resolution of previous iPhone models. What's more, it uses the same IPS display that's found on the iPad with an 800:1 contrast ratio.

Camera changes
The iPhone's camera has always been decent, but it's lacked features found on many basic phones. That's why we applaud the 5-megapixel resolution, the new LED flash, and the 5x digital zoom. The iPhone 4 also has a new back-side illuminated sensor, which requires a more-detailed explanation. Check out my colleague Stephen Shankland's blog for a detailed look at the technology.

iOS 4
As mentioned, the iPhone 4 has all the goodies that come with the latest iPhone operating system that Apple announced last April. Jobs said that the OS will now be called iOS 4 rather than iPhone OS 4. That's a nod to the fact that the OS runs on both the iPhone and the iPad.






Gyroscope
The iPhone 3Gs gave us a compass, but the iPhone 4 raises the bar by offering a three-axis gyroscope. Like on an airplane, you'll get pitch, roll, and yaw, and it's tied with the accelerometer to provide six-axis motion sensing. Though by all means it will be useful to app and game developers, it also just looks like a lot of fun.

FaceTime
FaceTime, a new video-calling exclusive to the iPhone 4. You'll be able to use FaceTime in both portrait and landscape modes, and it uses both the front and rear cameras. no setup, it's based on open standards, and that you won't have to download an additional app.


Well it only releasing in 5 countries mainly in US now..but need to see when it lands up in india..but surely it will be a mind blowing gadget


Main concern is Apple is pushing the Micro-SIM format, it saves plastic, but a Micro-SIM doesn't offer any functional benefits over the standard SIM. May be hinderance to iPhone jailbreakers? We'll have to wait and see the answer, but in the meantime we hope that you'll be able to use the same Micro-SIM between on an iPhone 4 and an iPad 3G.