The phones, which will operate exclusively on AT&T Inc.'s Cingular wireless network, will start shipping in June. A 4-gigabyte model will cost $499, while an 8-gigabyte iPhone will be $599, Jobs said.
IPhone is less than a half-inch thin — less than almost any phone on the market today. It comes with a 2-megapixel digital camera built into the back, as well as a slot for headphones and a SIM card.
In a demonstration Tuesday, Jobs slid his finger across the display to reveal a home screen and then scrolled through a list of songs.
To make a call, users can tap out the number on an onscreen keypad or scroll through their contacts and dial with a single touch.
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The 11.6-millimeter thick device also sports a 2-megapixel camera, headset jack, 3.5-millimeter audio jack, SIM tray, a “sleep-wake” switch, speaker, microphone input and an iPod dock connector. The quad-band GSM + EDGE phone also has Wi-Fi and Bluetooth 2.0 capabilities. Jobs noted 3G capabilities will come in the future.
Three smart sensors also help control the iPhone’s behavior. A proximity sensor shuts down the display and touchscreen when the phone is held to the ear. An ambient light sensor automatically adjusts screen brightness to save power. Meanwhile, an accelerometer lets the phone know whether to display in portrait or landscape mode.
Despite the phone’s revolutionary features, Jobs claimed that the phone’s strongest feature was its redefinition of how calls are made.
“We want to reinvent the phone,” Jobs said. “What’s the killer app? The killer app is making calls! It’s amazing how hard it is to make calls on phones. We want you to use contacts like never before.”
A Visual Voicemail feature allows users to skip directly to voice mails they want to hear. An easy-to-use conference call feature lets users connect two calls with one touch of the screen. Text messaging on the iPhone is similar to iChat, user dialogue is encased in bubbles, and a touch keyboard appears below.
The iPhone uses its Wi-Fi and EDGE capabilities to automatically connect to the Internet. Internet connectivity includes HTML-capable email that works with any IMAP or POP-based email service. Jobs also announced that Yahoo! will offer for free push-IMAP email—similar to the email system on a Blackberry—to iPhone customers.