Specifications

Size comparison between a first generation iPod nano, the iPhone, and a fourth generation iPod, from top to bottom.

The specifications as listed on Apple's website are:[76]
Screen size: 8.9 cm (3.5 in)
Screen resolution: 320×480 pixels at 160 ppi
Input method: Multi-touch screen interface (the "Home" button is the iPhone's only physical front panel button)
Operating System: OS X
Storage: 8 GB flash memory (originally: 4 or 8 GB choice)
Quad band GSM (GSM 850, GSM 900, GSM 1800, GSM 1900)
Wi-Fi (802.11g), EDGE and Bluetooth 2.0 with EDR
2 megapixel camera
Built-in rechargeable, non-removable battery with up to 8 hours of talk, 6 hours of Internet use, 7 hours of video playback, and up to 24 hours of audio playback, lasting over 250 hours on standby.[48]
Size: 115×61×11.6 mm (4.5×2.4×0.46 in)
Weight: 135 g (4.8 oz)
Digital SAR of 0.974 W/kg[77][78]

An analysis of the iPhone's firmware has revealed that the main Samsung chip (designated S5L8900) contains an ARM 1176 processor, together with a PowerVR MBX 3D graphics co-processor.