Apple introduces iPhone 4

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.

Updated design

Apple says the iPhone 4 is 9.3mm thick, or 24 percent thinner than the iPhone 3GS. It includes new camera with an LED flash on the black, but a second, front-facing camera as well. 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.

engineered three integrated antennas into the design: one for Bluetooth, one for WI-Fi and GPS, and one for UMTS and GSM.

Improved display

A new screen technology called a retina display add much higher precision to the iPhone. In fact, at 326 pixels per inch, it’s double the 163 pixels per inch resolution of the iPhone 3GS.

The new display is the same 3.5 inches diagonally, but at 960 by 640 it has four times as many pixels as the previous model. And the 800:1 contrast ratio is also four times that of the iPhone 3GS. It uses the same IPS display technology as the iPad and the iMac for good color fidelity, brightness, and viewing angle.

New processor

Designed by Apple, the A4 chip is tiny and has good power management. Apple went with the micro-SIM design to save space, mostly for a new battery that—coupled with the new chip—Apple says provides 40 percent more talk time. The company says talk time is up from 5 hours to 7 hours; 6 hours of 3G browsing; 10 hours of Wi-Fi browsing; 10 hours of video; 40 hours of music; and 300 hours of standby.

Environmentally, the new iPhone is arsenic free, BFR-free mercury-free, PVC-free, and made from highly recyclable materials.

It comes in sizes up to 32GB of storage (the same as the iPhone 3GS) and includes quad-band HSPDPA/HSUPA networking with a maximum of 7.2Mbps down and 5.8 Mbps up.

“That’s theoretical because the carriers don’t support it yet,” said Jobs.

There’s also 802.11n Wi-Fi wireless networking, an improvement from 802.11g in the previous model.

Gyroscope

The iPhone 4 add a three-axis gyroscope for measuring angular velocity. It can figure out pitch, roll, and yaw; and rotation about gravity. The gyroscope plus the accelerometer provide six-axis motion sensing. There are also new CoreMotion APIs that developers can call for extremely precise position information—ideal for games.

New camera system

The iPhone 4 has a new, 5-megapixel camera with 5x digital zoom and an LED flash. It also adds 720p HD video capture at 30 frames per second. To go along with the new video capabilities, Apple has created a version of its iMovie consumer video-editing application for the iPhone. With it, you can record or edit you videos (and add photos as well). You can add titles, changes themes, and use music from your iTunes library.

iMovie for iPhone will be available for $5—“if we approve it,” Jobs joked, in reference to the App Store.

Macworld will have more details on the new iPhone as they become available Monday.
source :www.macworld.com