The iPhone 4 will also feature an Apple-designed A4 CPU, following along the lines of the processor powering the iPad. Jobs said the A4 processor improved power management, so the iPhone 4 will manage 40 percent more talk time on 3G networks (up to 7 hours), or up to 6 hours of 3G Web browsing or 10 hours of Wi-Fi browsing.
Size and weight
Height: 4.5 inches (115.2 mm)
Width: 2.31 inches (58.6 mm)
Depth: 0.37 inch (9.3 mm)
Weight: 4.8 ounces (137 grams)
Capacity
32GB
Camera, photos, and video
Video recording, HD (720p) up to 30 frames per second with audio
5-megapixel still camera
VGA-quality photos and video at up to 30 frames per second with the front camera
Tap to focus video or still images
LED flash
Photo and video geotagging
Cellular and wireless
UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
802.11b/g/n Wi-Fi (802.11n 2.4GHz only)
Bluetooth 2.1 + EDR wireless technology
Display
Retina display
3.5-inch (diagonal) widescreen Multi-Touch display
960-by-640-pixel resolution at 326 ppi
800:1 contrast ratio (typical)
Fingerprint-resistant oleophobic coating on front and back
Support for display of multiple languages and characters simultaneously
Sensors
Three-axis gyro
Accelerometer
Proximity sensor
Ambient light sensor
Location
Assisted GPS
Digital compass
Wi-Fi
Cellular
Power and battery
Built-in rechargeable lithium-ion battery
Charging via USB to computer system or power adapter
Talk time:
Up to 7 hours on 3G
Up to 14 hours on 2G
Standby time: Up to 300 hours
Internet use:
Up to 6 hours on 3G
Up to 10 hours on Wi-Fi
Video playback: Up to 10 hours
Audio playback: Up to 40 hours
Audio playback
Frequency response: 20Hz to 20,000Hz
Audio formats supported: AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV
User-configurable maximum volume limit
Mac system requirements
Mac computer with USB 2.0 port
Mac OS X v10.5.8 or later
iTunes 9.2 or later
iTunes Store account
Internet access
Windows system requirements
PC with USB 2.0 port
Windows 7; Windows Vista; or Windows XP Home or Professional with Service Pack 3 or later
iTunes 9.2 or later
iTunes Store account
Internet access
Environmental requirements
Operating temperature: 32° to 95° F (0° to 35° C)
Non operating temperature: -4° to 113° F (-20° to 45° C)
Relative humidity: 5% to 95% noncondensing
Maximum operating altitude: 10,000 feet (3000 m)
