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Apple's iPhone 4: Thinner, Better Battery Life, HD Video

The new iPhone, announced today at Apple's WWDC, also will have improved connectivity and better screen resolution

By Melissa J. Perenson, PC World
June 07, 2010 03:52 PM ET

PC World - The Apple iPhone 4, announced today by Steve Jobs at Apple's Worldwide Developers Conference, will be 24 percent thinner than its predecessor at 9.3mm thick, contain a front-facing camera, and offer greatly improved battery performance (up to 40 percent more talk time, according to Jobs).

Jobs described the phone as, "beyond a doubt, the most precise thing and one of the most beautiful things we've ever made" before highlighting a number of its new features.

The iPhone 4 will be priced at $199 for a 16GB model and $299 for a 32GB model, and it will go on sale June 24.

Jobs also announced a new operating system for both iPhones and the iPad: Called iOS4, it will have 100 new features and 1500 application programming interfaces or APIs.

Other iPhone 4 Features

The new phone will have 32 gigabytes of storage, a gyroscope (which will allow for more precise motion detection), and HD video recording capability.

The phone also will have a improved screen resolution: 326 pixels per inch with heightened contrast. Jobs told the crowd that 300 pixels per inch is the limit of the ability of the human retina to view images.

It also will have three antennae built into the structure of the phone's body that will provide the iPhone 4 with the ability to work with Bluetooth; WI-Fi and GPS; and UMTS and GSM.

In my opinion, the display difference in the example Jobs shows is striking. While I've been dissatisfied by the fuzziness on the iPhone 3GS's text--something I liken to the difference between standard definition TV vs. HDTV--the text on the iPhone 4G looks sharp and crisp, with no pixelation. Additionally, the colors are more vibrant, and edges are smoother and sharper.

There are new volume buttons, a mute button, plus a second microphone on the top for noise cancellation. Just like the iPad, it now incorporates a micro-SIM tray.

Camera and Screen Details

The IPhone 4 comes with two cameras: One on the front for video conferencing, and one on the rear for photos and video. The rear-facing camera has been upgraded to 5 megapixels--up from 3 megapixels on the iPhone 3GS--and it can record 720p high-definition video.

Also included is an iPhone version of iMovie, which will let you edit video clips on the phone, splice them together, add titles to your videos, and so forth. (The app will set you back $4.99 from the App Store, Jobs told the packed audience at San Francisco's Moscone Center).

The iPhone 4 screen will have In-plane switching. Known as IPS, this is a high-end LCD technology that has better color and a better viewing angle than lower-end LCD screens. Apple currently uses an IPS screen in its iPad.

Jobs also said that the new phone's 800:1 contrast ratio was four times better than the current iPhone 3GS, with better color and a wide viewing angle that Jobs claimed was better than you can get with OLED display technology.

Jobs also announced FaceTime, a video chat app that makes use of the iPhone 4's new front-facing camera. FaceTime works over Wi-FI, and works between any two iPhone 4s. Jobs did note that FaceTime will not yet work if you're connected to a cellular data network--apparently there are a few kinks left to work out.

Originally published on www.pcworld.com. Click here to read the original story.

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