The original iPhone (1st Gen) is a handheld device combining mobile phone, iPod, and Internet communications functionality. It is a Quad-band GSM capable phone -- 850, 900, 1800, and 1900 MHz -- and features a 3.5" display with 320x480 resolution at 163 ppi, 4 GB, 8 GB, or 16 GB of flash memory (4 GB model discontinued September 5, 2007, 16 GB model introduced February 5, 2008), built-in support for Wi-Fi (802.11b/g), EDGE, and Bluetooth 2.0, as well as an integrated 2.0 megapixel camera all packed in a stylish case a mere 0.46 of an inch thick that weighs 4.0 ounces.Although initially announced as providing "up to" 16 hours of audio playback and "up to" 5 hours of "talk, video, and browsing", on June 18, 2007, Apple boosted these numbers to "up to" 8 hours of talk time, 24 hours of audio playback, 7 hours of video playback, and 6 hours of web browsing. It provides "up to" 250 hours of standby time.
Perhaps most notably, the original iPhone introduced a "multi-touch" interface that allows one to control
the functions of the system by dragging one or more fingers across the "optical quality" glass display.
The original iPhone also has an accelerometer that allows the device to "know" whether it is being heldin portrait or landscape mode and switch automatically, an ambient light sensor to adjust screen brightness based on need, and a "proximity sensor" to turn off the display when it is held to the ear.
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